diff --git a/bak/animateLights-bak.js b/bak/animateLights-bak.js
new file mode 100644
index 0000000..461735d
--- /dev/null
+++ b/bak/animateLights-bak.js
@@ -0,0 +1,352 @@
+/* animateLights.js
+ * LED animation for house lightning
+ */
+
+load('api_rpc.js');
+load("api_neopixel.js");
+load("api_file.js");
+
+let floor = ffi('double floor(double)');
+
+let colors = {
+  black: {r:0, g:0, b:0},
+  red: {r:255, g:0, b:0},
+  green: {r:0, g:255, b:0},
+  blue: {r:0, g:0, b:255},
+  yellow: {r:255, g:255, b:0},
+  orange: {r:255, g:127, b:0},
+  purple: {r:255, g:0, b:255},
+  white: {r:255, g:255, b:255},
+  dimmedWhite: {r:50, g:50, b:50}
+};
+
+
+let LightAnimation = {
+  numberOfBulbs: 22,
+  ledPin: 2,
+  that: this,
+  running: false,
+  mode: "demo", // "demo", "stop", "animate"
+  generalBrightness: 30, // percentage, value 0..100
+  description: "Default house lightning",
+  defaultColor: colors.dimmedWhite,
+  defaultMode: "demo",
+  tickResolution: 100, // number of milliseconds between ticks
+  currentTick: 0,
+  animationConfig: {}, // overwritten when loading animationConfig.js
+  colorSequence: [
+    colors.dimmedWhite,
+    colors.red,
+    colors.green,
+    colors.blue,
+    colors.yellow,
+    colors.orange,
+    colors.purple,
+    colors.red,
+    colors.red,
+    colors.green,
+    colors.green,
+    colors.white,
+    colors.white
+  ],
+  adjustBrightness: function (value) { return floor(value / LightAnimation.generalBrightness); },
+  changeMode: function (newMode) {
+    if (newMode === "animate") {
+      LightAnimation.running = true;
+      LightAnimation.mode = "start-animate"; // through transient mode start-animate to animate
+    } else
+    if (newMode === "stop") {
+      LightAnimation.running = true; // first we want to turn off LEDs, thus needs stop-mode but running
+      LightAnimation.mode = "stop";
+    } else
+    if (newMode === "demo") {
+      LightAnimation.mode = "demo";
+      LightAnimation.running = true;
+    } else
+    if (newMode === "cycle") {
+      LightAnimation.mode = "cycle";
+      LightAnimation.running = true;
+    } else
+    {
+      print("IGNORED: changeMode called with invalid mode = ", newMode);
+    }
+  },
+  updateAnimationConfig: function (config) {
+    LightAnimation.animationConfig = JSON.parse(config);
+    return LightAnimation.verifyAnimationConfig();
+  },
+  verifyAnimationConfig: function() {
+    if (LightAnimation.animationConfig.comment === undefined) {
+      return {error: 'config is incomplete or invalid / comment not found'};
+    }
+    if (LightAnimation.animationConfig.lights === undefined) {
+      return {error: 'config is incomplete or invalid / lights definition not found'};
+    }
+    if (LightAnimation.animationConfig.lights[0] === undefined) {
+      return {error: 'config is incomplete or invalid / lights is not an array?'};
+    }
+    let i;
+    for (i=0; i<LightAnimation.animationConfig.lights.length; ++i) {
+      if (LightAnimation.animationConfig.lights[i].level === undefined) {
+        return {error: 'config is incomplete or invalid / level missing in lights definition'};
+      }
+      if (LightAnimation.animationConfig.lights[i].room === undefined) {
+        return {error: 'config is incomplete or invalid / room missing in lights definition'};
+      }
+      if (LightAnimation.animationConfig.lights[i].on === undefined) {
+        return {error: 'config is incomplete or invalid / on missing in lights definition'};
+      }
+      if (LightAnimation.animationConfig.lights[i].on[0] === undefined) {
+        return {error: 'config is incomplete or invalid / on not an array in lights definition?'};
+      }
+      if (LightAnimation.animationConfig.lights[i].on.length !== 3) {
+        return {error: 'config is incomplete or invalid / on must have 3 elements for R/G/B in lights definition?'};
+      }
+      if (LightAnimation.animationConfig.lights[i].id === undefined) {
+        return {error: 'config is incomplete or invalid / id missing in lights definition'};
+      }
+    }
+    return {result: 'ok'};
+  },
+  findNextAnimationStep: function (lightIndex, afterStep) {
+    let i = afterStep + 1;
+
+    for (i=afterStep + 1; i<LightAnimation.animationConfig.animation.length; ++i) {
+      if (LightAnimation.animationConfig.animation[i].lightsIndex === lightIndex)
+        return i;
+    }
+    // nothing found, thus start from the beginning
+    for (i=0; i<=afterStep; ++i) {
+      if (LightAnimation.animationConfig.animation[i].lightsIndex === lightIndex)
+        return i;
+    }
+    // nothing found again, thus it seems, there is no config for this lightIndex
+    return -1;
+  }
+};
+
+// load("animationConfig.js", LightAnimation);
+load("animationConfig.js");
+print(LightAnimation.verifyAnimationConfig());
+
+print("Initialize neoPixel");
+let colorOrder = NeoPixel.GRB;
+let strip = NeoPixel.create(LightAnimation.ledPin, LightAnimation.numberOfBulbs, colorOrder);
+let i = 0;
+strip.clear();
+strip.show();
+// initialize test pattern
+for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+  if (i % 2) {
+    strip.setPixel(i, 80, 20, 20);
+  } else {
+    strip.setPixel(i, 20, 80, 20);
+  }
+}
+strip.show();
+
+return; // @TODO
+
+// Add RPC handlers
+
+RPC.addHandler('HouseLightning.Start', function(args) {
+  LightAnimation.changeMOde("animate");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.Stop', function(args) {
+  LightAnimation.changeMode("stop");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.DemoMode', function(args) {
+  LightAnimation.changeMode("demo");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.CycleMode', function(args) {
+  LightAnimation.changeMOde("cycle");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.GetAnimationConfig', function(args) {
+  return LightAnimation.animationConfig;
+}, null);
+
+RPC.addHandler('HouseLightning.SetAnimationConfig', function(args) {
+  if (args !== undefined && args.config !== undefined) {
+    return LightAnimation.updateAnimationConfig(args.config);
+  } else {
+    return {error: 'parameter config is required'};
+  }
+}, null);
+
+function demoAnimation(strip, shiftBy) {
+  let i=0, colorIndex=0, color;
+  
+  for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+    colorIndex = shiftBy % LightAnimation.colorSequence.length;
+    color = LightAnimation.colorSequence[colorIndex];
+    strip.setPixel(i, LightAnimation.adjustBrightness(color.r), LightAnimation.adjustBrightness(color.g), LightAnimation.adjustBrightness(color.b));
+    // print("runNeo shift =", shiftBy, ", colorIndex =", colorIndex, ", r =", color.r, ", g =", color.g, ", b =", color.b);
+    shiftBy++;
+  }
+  strip.show();
+}
+
+// initialize module
+let configString = "";
+/*configString = File.read("lights.cfg");
+if (configString === "" || configString === null) configString = "***default***";
+// print("configString = ", configString);
+LightAnimation.animationConfig = JSON.parse(configString);
+configString = null;*/
+
+// LightAnimation.animationConfig = animationConfig;
+
+
+
+
+// print("LightAnimation.animationConfig = ", JSON.stringify(LightAnimation.animationConfig));
+print("Animation length: ", LightAnimation.animationConfig.animation.length);
+// initialize internal data structure
+let LEDstate = [{"index":0}]; //LightAnimation.numberOfBulbs];
+let defaultLEDstate = {
+    index: 0,         // LED #
+    nextTick: 0,      // next action necessary on tick #
+    rampTickDelta: 0, // to be added on nextTick for Ramp-Animation
+    mode: "off",    // "on", "off", "blink", "tv", "fire", "welding"
+    currentLEDCtrl: 0,  // index on LEDCtrl[LEDnum][...]
+    numLEDCtrl: 0,    // number of LEDCtrl entries for this bulb
+    modeStep: 0,      // dependent on mode to ctrl animation details
+    clockEndHours: 23,  // time, this animation should end
+    clockEndMinutes: 59,
+    currentRed: colors.dimmedWhite.r, currentGreen: colors.dimmedWhite.g, currentBlue: colors.dimmedWhite.b,
+    onRed: colors.dimmedWhite.r, onGreen: colors.dimmedWhite.g, onBlue: colors.dimmedWhite.b,
+    targetRed: 0, targetGreen: 0, targetBlue: 0,
+    currentAnimationStep:0  // animation step in LightAnimation.animationConfig.animation[step]
+  };
+
+
+for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+  print("Init LEDstate", i);
+  LEDstate[i].index =  i;
+  LEDstate[i].nextTick =  defaultLEDstate.nextTick;
+  LEDstate[i].rampTickDelta =  defaultLEDstate.rampTickDelta;
+  LEDstate[i].mode =  defaultLEDstate.mode;
+  LEDstate[i].currentLEDCtrl =  defaultLEDstate.currentLEDCtrl;
+  LEDstate[i].numLEDCtrl =  defaultLEDstate.numLEDCtrl;
+  LEDstate[i].modeStep =  defaultLEDstate.modeStep;
+  LEDstate[i].clockEndHours =  defaultLEDstate.clockEndHours;
+  LEDstate[i].clockEndMinutes =  defaultLEDstate.clockEndMinutes;
+  LEDstate[i].currentRed =  defaultLEDstate.currentRed;
+  LEDstate[i].currentGreen =  defaultLEDstate.currentGreen;
+  LEDstate[i].currentBlue =  defaultLEDstate.currentBlue;
+  LEDstate[i].targetRed =  defaultLEDstate.targetRed;
+  LEDstate[i].targetGreen =  defaultLEDstate.targetGreen;
+  LEDstate[i].targetBlue =  defaultLEDstate.targetBlue;
+  LEDstate[i].onRed = defaultLEDstate.onRed; //LightAnimation.animationConfig.lights.on[0];
+  LEDstate[i].onGreen = defaultLEDstate.onGreen; //LightAnimation.animationConfig.lights.on[1];
+  LEDstate[i].onBlue = defaultLEDstate.onBlue; //LightAnimation.animationConfig.lights.on[2];
+  LEDstate[i].currentAnimationStep = LightAnimation.findNextAnimationStep(i, -1);
+}
+// print("LEDstate=", JSON.stringify(LEDstate));
+
+function animateBulb(bulb, currentTick) {
+  if (LEDstate[bulb].mode === "on") {
+    strip.setPixel(bulb, LightAnimation.adjustBrightness(LEDstate[bulb].currentRed), LightAnimation.adjustBrightness(LEDstate[bulb].currentGreen), LightAnimation.adjustBrightness(LEDstate[bulb].currentBlue));
+  } else
+  if (LEDstate[bulb].mode === "off") {
+    strip.setPixel(bulb, 0, 0, 0);
+  } else print ("animateBulb: mode not yet implemented - ", LEDstate[bulb].mode);
+}
+
+let shiftAnimation = 1; // needed for demo mode
+
+function animateTick() {
+  // started for every single ticks; does all changes necessary according to animation configuration
+  if (LightAnimation.running) {
+    if (LightAnimation.mode === "demo") {
+      demoAnimation(strip, shiftAnimation);
+      shiftAnimation++;
+      // print("*** demo-mode, next shift=", shiftAnimation);
+    } else if (LightAnimation.mode === "stop") {
+      strip.clear();
+      strip.show();
+      LightAnimation.running = false;
+      print("*** stopped");
+    } else if (LightAnimation.mode === "start-animate") {
+      strip.clear();
+      strip.show();
+      LightAnimation.running = true;
+      LightAnimation.mode = "animate";
+      print("*** started");
+    } else if (LightAnimation.mode === "animate") {
+      LightAnimation.currentTick++;
+      // do animation step changes
+      for (i=0; i<LightAnimation.animationConfig.animation.length; ++i) {
+        if (LightAnimation.animationConfig.animation[i].time === animateTick) {
+          // activate new state
+          let bulbIndex = LightAnimation.animationConfig.animation[i].lightsIndex;
+          let nextAnimationStep = LightAnimation.findNextAnimationStep(bulbIndex, LEDstate[bulbIndex].currentAnimationStep);
+          LEDstate[bulbIndex].currentAnimationStep = nextAnimationStep;
+          LEDstate[bulbIndex].nextTick = LightAnimation.animationConfig.animation[nextAnimationStep].time;
+          LEDstate[bulbIndex].mode = LightAnimation.animationConfig.animation[nextAnimationStep].stepType;
+          LEDstate[bulbIndex].modeStep = 0; // reset to start
+          if (LEDstate[bulbIndex].mode === "off") {
+            LEDstate[bulbIndex].targetRed = 0;
+            LEDstate[bulbIndex].targetGreen = 0;
+            LEDstate[bulbIndex].targetBlue = 0;
+            LEDstate[bulbIndex].currentRed = LEDstate[bulbIndex].targetRed;
+            LEDstate[bulbIndex].currentGreen = LEDstate[bulbIndex].targetGreen;
+            LEDstate[bulbIndex].currentBlue = LEDstate[bulbIndex].targetBlue;
+          } else
+          if (LEDstate[bulbIndex].mode === "on") {
+            LEDstate[bulbIndex].targetRed = LEDstate[bulbIndex].onRed;
+            LEDstate[bulbIndex].targetGreen = LEDstate[bulbIndex].onGreen;
+            LEDstate[bulbIndex].targetBlue = LEDstate[bulbIndex].onBlue;
+            LEDstate[bulbIndex].currentRed = LEDstate[bulbIndex].targetRed;
+            LEDstate[bulbIndex].currentGreen = LEDstate[bulbIndex].targetGreen;
+            LEDstate[bulbIndex].currentBlue = LEDstate[bulbIndex].targetBlue;
+          } else
+          print("ERROR: Unsupported mode in LEDstate[", bulbIndex, "].mode=", LEDstate[bulbIndex].mode);
+          // updateBulbAnimation(bulbIndex, animateTick, LightAnimation.animationConfig.animation[i]);
+          /*
+          if (LightAnimation.animationConfig.animation[i].stepType === "on") {
+            LEDstate[bulbIndex].mode = "on";
+            strip.setPixel(bulbIndex, LEDstate[bulbIndex].defaultColor.r, LEDstate[bulbIndex].defaultColor.g, LEDstate[bulbIndex].defaultColor.b);
+          } else 
+          if (LightAnimation.animationConfig.animation[i].stepType === "off") {
+            LEDstate[LightAnimation.lightsIndex].mode = "off";
+            strip.setPixel(LightAnimation.lightsIndex, 0, 0, 0);
+          } else print("*** animation stepType not implemented: ", LightAnimation.animationConfig[i].stepType);
+          */
+        }
+      }
+      // do microanimation
+      for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+        animateBulb(i, LightAnimation.currentTick);
+        if (LightAnimation.currentTick >= LEDstate[i].nextTick) {
+          // update this animated bulb
+        }
+        // strip.setPixel called in animateBulb
+        // strip.setPixel(i, LightAnimation.adjustBrightness(LEDstate[i].currentRed), LightAnimation.adjustBrightness(LEDstate[i].currentGreen), LightAnimation.adjustBrightness(LEDstate[i].currentBlue));
+      }
+      strip.show();
+    } else print("*** Unknown LightAnimation.mode =", LightAnimation.mode);
+  }
+}
+
+
+return; // @TODO
+
+// Show start pattern for 3 seconds, then switch to default colors
+Timer.set(3000 /* msec */, true /* repeat */, function() {
+  for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+    strip.setPixel(i, LightAnimation.defaultColor.r, LightAnimation.defaultColor.g, LightAnimation.defaultColor.b);
+  }
+  strip.show();
+  print("START animation");
+
+  Timer.set(LightAnimation.tickResolution, true /* repeat */, animateTick, null);
+}, null);
diff --git a/bak/animateLights.js b/bak/animateLights.js
new file mode 100755
index 0000000..76e6c1c
--- /dev/null
+++ b/bak/animateLights.js
@@ -0,0 +1,371 @@
+/* animateLights.js
+ * LED animation for house lightning
+ */
+
+load('api_rpc.js');
+load("api_neopixel.js");
+load("api_file.js");
+
+let floor = ffi('double floor(double)');
+
+let colors = {
+  black: {r:0, g:0, b:0},
+  red: {r:255, g:0, b:0},
+  green: {r:0, g:255, b:0},
+  blue: {r:0, g:0, b:255},
+  yellow: {r:255, g:255, b:0},
+  orange: {r:255, g:127, b:0},
+  purple: {r:255, g:0, b:255},
+  white: {r:255, g:255, b:255},
+  dimmedWhite: {r:50, g:50, b:50}
+};
+
+
+let LightAnimation = {
+  numberOfBulbs: 22,
+  ledPin: 2,
+  that: this,
+  running: false,
+  mode: "demo", // "demo", "stop", "animate"
+  generalBrightness: 30, // percentage, value 0..100
+  description: "Default house lightning",
+  defaultColor: colors.dimmedWhite,
+  defaultMode: "demo",
+  tickResolution: 1000, // number of milliseconds between ticks
+  currentTick: 0,
+  animationConfig: {}, // overwritten when loading animationConfig.js
+  colorSequence: [
+    colors.dimmedWhite,
+    colors.red,
+    colors.green,
+    colors.blue,
+    colors.yellow,
+    colors.orange,
+    colors.purple,
+    colors.red,
+    colors.red,
+    colors.green,
+    colors.green,
+    colors.white,
+    colors.white
+  ],
+  adjustBrightness: function (value) { return floor(value / LightAnimation.generalBrightness); },
+  changeMode: function (newMode) {
+    if (newMode === "animate") {
+      LightAnimation.running = true;
+      LightAnimation.mode = "start-animate"; // through transient mode start-animate to animate
+    } else
+    if (newMode === "stop") {
+      LightAnimation.running = true; // first we want to turn off LEDs, thus needs stop-mode but running
+      LightAnimation.mode = "stop";
+    } else
+    if (newMode === "demo") {
+      LightAnimation.mode = "demo";
+      LightAnimation.running = true;
+    } else
+    if (newMode === "cycle") {
+      LightAnimation.mode = "cycle";
+      LightAnimation.running = true;
+    } else
+    {
+      print("IGNORED: changeMode called with invalid mode = ", newMode);
+    }
+  },
+  updateAnimationConfig: function (config) {
+    LightAnimation.animationConfig = JSON.parse(config);
+    return LightAnimation.verifyAnimationConfig();
+  },
+  verifyAnimationConfig: function() {
+    if (LightAnimation.animationConfig.comment === undefined) {
+      return {error: 'config is incomplete or invalid / comment not found'};
+    }
+    if (LightAnimation.animationConfig.lights === undefined) {
+      return {error: 'config is incomplete or invalid / lights definition not found'};
+    }
+    if (LightAnimation.animationConfig.lights[0] === undefined) {
+      return {error: 'config is incomplete or invalid / lights is not an array?'};
+    }
+    let i;
+    for (i=0; i<LightAnimation.animationConfig.lights.length; ++i) {
+      if (LightAnimation.animationConfig.lights[i].level === undefined) {
+        return {error: 'config is incomplete or invalid / level missing in lights definition'};
+      }
+      if (LightAnimation.animationConfig.lights[i].room === undefined) {
+        return {error: 'config is incomplete or invalid / room missing in lights definition'};
+      }
+      if (LightAnimation.animationConfig.lights[i].on === undefined) {
+        return {error: 'config is incomplete or invalid / on missing in lights definition'};
+      }
+      if (LightAnimation.animationConfig.lights[i].on[0] === undefined) {
+        return {error: 'config is incomplete or invalid / on not an array in lights definition?'};
+      }
+      if (LightAnimation.animationConfig.lights[i].on.length !== 3) {
+        return {error: 'config is incomplete or invalid / on must have 3 elements for R/G/B in lights definition?'};
+      }
+      if (LightAnimation.animationConfig.lights[i].id === undefined) {
+        return {error: 'config is incomplete or invalid / id missing in lights definition'};
+      }
+    }
+    return {result: 'ok'};
+  },
+  findNextAnimationStep: function (lightIndex, afterStep) {
+    let i = afterStep + 1;
+
+    for (i=afterStep + 1; i<LightAnimation.animationConfig.animation.length; ++i) {
+      if (LightAnimation.animationConfig.animation[i].lightsIndex === lightIndex)
+        return i;
+    }
+    // nothing found, thus start from the beginning
+    for (i=0; i<=afterStep; ++i) {
+      if (LightAnimation.animationConfig.animation[i].lightsIndex === lightIndex)
+        return i;
+    }
+    // nothing found again, thus it seems, there is no config for this lightIndex
+    return -1;
+  }
+};
+
+gc(true);
+// load("animationConfig.js", LightAnimation);
+load("animationConfig.js");
+/*
+LightAnimation.animationConfig = {
+    "comment": "lights.cfg / JSON",
+    "lights": [
+      { "level":"EG", "room":"Wohnzimmer", "on":[200,200,200], "id":"EG-WoZi" }
+    ],
+    "animation": [
+      { "lightsIndex": 2, "stepType": "on", "time": 1, "comment": "Fr. S. wacht auf" }
+    ]
+};
+*/
+
+// print(LightAnimation.verifyAnimationConfig());
+gc(true);
+
+print("Initialize neoPixel");
+let colorOrder = NeoPixel.GRB;
+let strip = NeoPixel.create(LightAnimation.ledPin, LightAnimation.numberOfBulbs, colorOrder);
+let i = 0;
+strip.clear();
+strip.show();
+// initialize test pattern
+for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+  if (i % 2) {
+    strip.setPixel(i, 80, 20, 20);
+  } else {
+    strip.setPixel(i, 20, 80, 20);
+  }
+}
+strip.show();
+
+
+// Add RPC handlers
+print("Initialize RPC Handlers");
+RPC.addHandler('HouseLightning.Start', function(args) {
+  LightAnimation.changeMOde("animate");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.Stop', function(args) {
+  LightAnimation.changeMode("stop");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.DemoMode', function(args) {
+  LightAnimation.changeMode("demo");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.CycleMode', function(args) {
+  LightAnimation.changeMOde("cycle");
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.GetAnimationConfig', function(args) {
+  return LightAnimation.animationConfig;
+}, null);
+
+RPC.addHandler('HouseLightning.SetAnimationConfig', function(args) {
+  if (args !== undefined && args.config !== undefined) {
+    return LightAnimation.updateAnimationConfig(args.config);
+  } else {
+    return {error: 'parameter config is required'};
+  }
+}, null);
+
+function demoAnimation(strip, shiftBy) {
+  let i=0, colorIndex=0, color;
+  
+  for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+    colorIndex = shiftBy % LightAnimation.colorSequence.length;
+    color = LightAnimation.colorSequence[colorIndex];
+    strip.setPixel(i, LightAnimation.adjustBrightness(color.r), LightAnimation.adjustBrightness(color.g), LightAnimation.adjustBrightness(color.b));
+    // print("runNeo shift =", shiftBy, ", colorIndex =", colorIndex, ", r =", color.r, ", g =", color.g, ", b =", color.b);
+    shiftBy++;
+  }
+  strip.show();
+}
+
+// initialize module
+let configString = "";
+/*configString = File.read("lights.cfg");
+if (configString === "" || configString === null) configString = "***default***";
+// print("configString = ", configString);
+LightAnimation.animationConfig = JSON.parse(configString);
+configString = null;*/
+
+// LightAnimation.animationConfig = animationConfig;
+
+
+
+
+// print("LightAnimation.animationConfig = ", JSON.stringify(LightAnimation.animationConfig));
+print("Animation length: ", LightAnimation.animationConfig.animation.length);
+// initialize internal data structure
+let defaultLEDstate = {
+    index: 0,         // LED #
+    nextTick: 0,      // next action necessary on tick #
+    rampTickDelta: 0, // to be added on nextTick for Ramp-Animation
+    mode: "off",    // "on", "off", "blink", "tv", "fire", "welding"
+    currentLEDCtrl: 0,  // index on LEDCtrl[LEDnum][...]
+    numLEDCtrl: 0,    // number of LEDCtrl entries for this bulb
+    modeStep: 0,      // dependent on mode to ctrl animation details
+    clockEndHours: 23,  // time, this animation should end
+    clockEndMinutes: 59,
+    currentRed: colors.dimmedWhite.r, currentGreen: colors.dimmedWhite.g, currentBlue: colors.dimmedWhite.b,
+    onRed: colors.dimmedWhite.r, onGreen: colors.dimmedWhite.g, onBlue: colors.dimmedWhite.b,
+    targetRed: 0, targetGreen: 0, targetBlue: 0,
+    currentAnimationStep:0  // animation step in LightAnimation.animationConfig.animation[step]
+  };
+let LEDstate = [];
+
+
+for (i=0; i<1/*LightAnimation.numberOfBulbs*/; ++i) {
+  gc(true);
+  print("Init LEDstate", i, ", free RAM ", Sys.free_ram());
+  LEDstate[i] =Object.create(defaultLEDstate);
+  LEDstate[i].index =  i;
+  LEDstate[i].nextTick =  defaultLEDstate.nextTick;
+  LEDstate[i].rampTickDelta =  defaultLEDstate.rampTickDelta;
+  LEDstate[i].mode =  defaultLEDstate.mode;
+  LEDstate[i].currentLEDCtrl =  defaultLEDstate.currentLEDCtrl;
+  LEDstate[i].numLEDCtrl =  defaultLEDstate.numLEDCtrl;
+  LEDstate[i].modeStep =  defaultLEDstate.modeStep;
+  LEDstate[i].clockEndHours =  defaultLEDstate.clockEndHours;
+  LEDstate[i].clockEndMinutes =  defaultLEDstate.clockEndMinutes;
+  LEDstate[i].currentRed =  defaultLEDstate.currentRed;
+  LEDstate[i].currentGreen =  defaultLEDstate.currentGreen;
+  LEDstate[i].currentBlue =  defaultLEDstate.currentBlue;
+  LEDstate[i].targetRed =  defaultLEDstate.targetRed;
+  LEDstate[i].targetGreen =  defaultLEDstate.targetGreen;
+  LEDstate[i].targetBlue =  defaultLEDstate.targetBlue;
+  LEDstate[i].onRed = defaultLEDstate.onRed; //LightAnimation.animationConfig.lights.on[0];
+  LEDstate[i].onGreen = defaultLEDstate.onGreen; //LightAnimation.animationConfig.lights.on[1];
+  LEDstate[i].onBlue = defaultLEDstate.onBlue; //LightAnimation.animationConfig.lights.on[2];
+  // LEDstate[i].currentAnimationStep = LightAnimation.findNextAnimationStep(i, -1);
+}
+
+print("LEDstate index0=", LEDstate[0].index, ", index1=", LEDstate[1].index);
+print("LEDstate=", JSON.stringify(LEDstate));
+
+function animateBulb(bulb, currentTick) {
+  if (LEDstate[bulb].mode === "on") {
+    strip.setPixel(bulb, LightAnimation.adjustBrightness(LEDstate[bulb].currentRed), LightAnimation.adjustBrightness(LEDstate[bulb].currentGreen), LightAnimation.adjustBrightness(LEDstate[bulb].currentBlue));
+  } else
+  if (LEDstate[bulb].mode === "off") {
+    strip.setPixel(bulb, 0, 0, 0);
+  } else print ("animateBulb: mode not yet implemented - ", LEDstate[bulb].mode);
+}
+
+let shiftAnimation = 1; // needed for demo mode
+
+function animateTick() {
+  // started for every single ticks; does all changes necessary according to animation configuration
+  print("***animate***");
+  return;
+  if (LightAnimation.running) {
+    if (LightAnimation.mode === "demo") {
+      demoAnimation(strip, shiftAnimation);
+      shiftAnimation++;
+      // print("*** demo-mode, next shift=", shiftAnimation);
+    } else if (LightAnimation.mode === "stop") {
+      strip.clear();
+      strip.show();
+      LightAnimation.running = false;
+      print("*** stopped");
+    } else if (LightAnimation.mode === "start-animate") {
+      strip.clear();
+      strip.show();
+      LightAnimation.running = true;
+      LightAnimation.mode = "animate";
+      print("*** started");
+    } else if (LightAnimation.mode === "animate") {
+      LightAnimation.currentTick++;
+      // do animation step changes
+      for (i=0; i<LightAnimation.animationConfig.animation.length; ++i) {
+        if (LightAnimation.animationConfig.animation[i].time === animateTick) {
+          // activate new state
+          let bulbIndex = LightAnimation.animationConfig.animation[i].lightsIndex;
+          let nextAnimationStep = LightAnimation.findNextAnimationStep(bulbIndex, LEDstate[bulbIndex].currentAnimationStep);
+          LEDstate[bulbIndex].currentAnimationStep = nextAnimationStep;
+          LEDstate[bulbIndex].nextTick = LightAnimation.animationConfig.animation[nextAnimationStep].time;
+          LEDstate[bulbIndex].mode = LightAnimation.animationConfig.animation[nextAnimationStep].stepType;
+          LEDstate[bulbIndex].modeStep = 0; // reset to start
+          if (LEDstate[bulbIndex].mode === "off") {
+            LEDstate[bulbIndex].targetRed = 0;
+            LEDstate[bulbIndex].targetGreen = 0;
+            LEDstate[bulbIndex].targetBlue = 0;
+            LEDstate[bulbIndex].currentRed = LEDstate[bulbIndex].targetRed;
+            LEDstate[bulbIndex].currentGreen = LEDstate[bulbIndex].targetGreen;
+            LEDstate[bulbIndex].currentBlue = LEDstate[bulbIndex].targetBlue;
+          } else
+          if (LEDstate[bulbIndex].mode === "on") {
+            LEDstate[bulbIndex].targetRed = LEDstate[bulbIndex].onRed;
+            LEDstate[bulbIndex].targetGreen = LEDstate[bulbIndex].onGreen;
+            LEDstate[bulbIndex].targetBlue = LEDstate[bulbIndex].onBlue;
+            LEDstate[bulbIndex].currentRed = LEDstate[bulbIndex].targetRed;
+            LEDstate[bulbIndex].currentGreen = LEDstate[bulbIndex].targetGreen;
+            LEDstate[bulbIndex].currentBlue = LEDstate[bulbIndex].targetBlue;
+          } else
+          print("ERROR: Unsupported mode in LEDstate[", bulbIndex, "].mode=", LEDstate[bulbIndex].mode);
+          // updateBulbAnimation(bulbIndex, animateTick, LightAnimation.animationConfig.animation[i]);
+          /*
+          if (LightAnimation.animationConfig.animation[i].stepType === "on") {
+            LEDstate[bulbIndex].mode = "on";
+            strip.setPixel(bulbIndex, LEDstate[bulbIndex].defaultColor.r, LEDstate[bulbIndex].defaultColor.g, LEDstate[bulbIndex].defaultColor.b);
+          } else 
+          if (LightAnimation.animationConfig.animation[i].stepType === "off") {
+            LEDstate[LightAnimation.lightsIndex].mode = "off";
+            strip.setPixel(LightAnimation.lightsIndex, 0, 0, 0);
+          } else print("*** animation stepType not implemented: ", LightAnimation.animationConfig[i].stepType);
+          */
+        }
+      }
+      // do microanimation
+      for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+        animateBulb(i, LightAnimation.currentTick);
+        if (LightAnimation.currentTick >= LEDstate[i].nextTick) {
+          // update this animated bulb
+        }
+        // strip.setPixel called in animateBulb
+        // strip.setPixel(i, LightAnimation.adjustBrightness(LEDstate[i].currentRed), LightAnimation.adjustBrightness(LEDstate[i].currentGreen), LightAnimation.adjustBrightness(LEDstate[i].currentBlue));
+      }
+      strip.show();
+    } else print("*** Unknown LightAnimation.mode =", LightAnimation.mode);
+  }
+}
+
+// Garbage collection before startup, full=true --> reclaim RAM to OS
+gc(true);
+
+print("Initialize timer, start in 5 seconds");
+// Show start pattern for 5 seconds, then switch to default colors
+Timer.set(5000 /* msec */, false /* repeat */, function() {
+  print("START animation");
+  for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
+    strip.setPixel(i, LightAnimation.defaultColor.r, LightAnimation.defaultColor.g, LightAnimation.defaultColor.b);
+  }
+  strip.show();
+  Timer.set(LightAnimation.tickResolution, true /* repeat */, animateTick, null);
+}, null);
diff --git a/fs/lights.cfg b/bak/animationConfig.js
old mode 100755
new mode 100644
similarity index 51%
rename from fs/lights.cfg
rename to bak/animationConfig.js
index e4406c6..c122d71
--- a/fs/lights.cfg
+++ b/bak/animationConfig.js
@@ -1,4 +1,4 @@
-{
+LightAnimation.animationConfig = {
     "comment": "lights.cfg / JSON",
     "lights": [
       { "level":"EG", "room":"Wohnzimmer", "on":[200,200,200], "id":"EG-WoZi" },
@@ -14,5 +14,17 @@
       { "level":"OG2", "room":"Buero 2.2", "on":[150,150,130], "id":"OG2-Buero-2" },
       { "level":"OG2", "room":"Buero 2.3", "on":[150,150,130], "id":"OG2-Buero-3" },
       { "level":"OG2", "room":"Buero 2.4", "on":[150,150,130], "id":"OG2-Buero-4" }
+    ],
+    "animation": [
+      { "lightsIndex": 2, "stepType": "on", "time": 1, "comment": "Fr. S. wacht auf" },
+      { "lightsIndex": 2, "stepType": "off", "time": 55, "comment": "Fr. S. geht ins Bad" },
+      { "lightsIndex": 1, "stepType": "on", "time": 56, "comment": "Fr. S. duscht" },
+      { "lightsIndex": 2, "stepType": "on", "time": 250, "comment": "Fr. S. zieht sich an" },
+      { "lightsIndex": 0, "stepType": "on", "time": 350, "comment": "Fr. S. setzt einen Kaffee auf und raeumt auf" },
+      { "lightsIndex": 1, "stepType": "off", "time": 355, "comment": "Fr. S. ist fertig im Bad" },
+      { "lightsIndex": 2, "stepType": "off", "time": 400, "comment": "Fr. S. ist fertig im Schlafzimmer" },
+      { "lightsIndex": 0, "stepType": "off", "time": 500, "comment": "Fr. S. hat gefruehstueckt und verlaesst die Wohnung" },
+      { "lightsIndex": 3, "stepType": "on", "time": 520, "comment": "Fr. S. ist im Buero" },
+      { "lightsIndex": 4, "stepType": "on", "time": 700, "comment": "Fr. S. ist im Buero" }
     ]
-}
\ No newline at end of file
+};
diff --git a/bak/api_ledlights.js b/bak/api_ledlights.js
new file mode 100644
index 0000000..06fda42
--- /dev/null
+++ b/bak/api_ledlights.js
@@ -0,0 +1,10 @@
+/* api_ledlights.js */
+
+/*
+let LED = {
+	Red: ffi('int get_led_red(int)'),
+	Green: ffi('int get_led_red(int)'),
+	Blue: ffi('int get_led_red(int)'),
+	Tick: ffi('void led_evaluate_tick(void)')
+};
+*/
\ No newline at end of file
diff --git a/bak/init-bak.js b/bak/init-bak.js
new file mode 100644
index 0000000..1f67c70
--- /dev/null
+++ b/bak/init-bak.js
@@ -0,0 +1,57 @@
+load('api_config.js');
+load('api_gpio.js');
+load('api_mqtt.js');
+load('api_net.js');
+load('api_sys.js');
+load('api_rpc.js');
+load('api_timer.js');
+/* load("animateLights.js"); */
+load('api_ledlights.js');
+
+let led = Cfg.get('pins.led');
+
+// Helper C function get_led_gpio_pin() in src/main.c returns built-in LED GPIO
+// let onBoardLed = ffi('int get_led_gpio_pin()')();
+
+let button = Cfg.get('pins.button');
+let topic = '/devices/' + Cfg.get('device.id') + '/events';
+
+print('LED GPIO:', led, 'button GPIO:', button);
+
+let getInfo = function() {
+  return JSON.stringify({
+    total_ram: Sys.total_ram(),
+    free_ram: Sys.free_ram()
+  });
+};
+
+// Blink built-in LED every second
+GPIO.set_mode(led, GPIO.MODE_OUTPUT);
+Timer.set(5000 /* 1 sec */, true /* repeat */, function() {
+  let value = GPIO.toggle(led);
+  print(value ? 'Tick' : 'Tock', 'uptime:', Sys.uptime(), getInfo());
+}, null);
+
+// Publish to MQTT topic on a button press. Button is wired to GPIO pin 0
+/*
+GPIO.set_button_handler(button, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
+  let message = getInfo();
+  let ok = MQTT.pub(topic, message, 1);
+  print('Published:', ok, topic, '->', message);
+}, null);
+*/
+
+// Monitor network connectivity.
+Net.setStatusEventHandler(function(ev, arg) {
+  let evs = '???';
+  if (ev === Net.STATUS_DISCONNECTED) {
+    evs = 'DISCONNECTED';
+  } else if (ev === Net.STATUS_CONNECTING) {
+    evs = 'CONNECTING';
+  } else if (ev === Net.STATUS_CONNECTED) {
+    evs = 'CONNECTED';
+  } else if (ev === Net.STATUS_GOT_IP) {
+    evs = 'GOT_IP';
+  }
+  print('== Net event:', ev, evs);
+}, null);
diff --git a/bak/lights.cfg b/bak/lights.cfg
new file mode 100755
index 0000000..e958b80
--- /dev/null
+++ b/bak/lights.cfg
@@ -0,0 +1,29 @@
+{   "comment": "lights.cfg / JSON",
+    "lights": [
+      { "level":"EG", "room":"Wohnzimmer", "on":[200,200,200], "id":"EG-WoZi" },
+      { "level":"EG", "room":"Bad", "on":[150,150,150], "id":"EG-Bad" },
+      { "level":"EG", "room":"Schlafzimmer", "on":[130,130,130], "id":"EG-Schlafen" },
+      { "level":"EG", "room":"Buero 0.1", "on":[150,150,130], "id":"EG-Buero-1" },
+      { "level":"EG", "room":"Buero 0.2", "on":[150,150,130], "id":"EG-Buero-2" },
+      { "level":"OG1", "room":"Buero 1.1", "on":[150,150,130], "id":"OG1-Buero-1" },
+      { "level":"OG1", "room":"Buero 1.2", "on":[150,150,130], "id":"OG1-Buero-2" },
+      { "level":"OG1", "room":"Buero 1.3", "on":[150,150,130], "id":"OG1-Buero-3" },
+      { "level":"OG1", "room":"Buero 1.4", "on":[150,150,130], "id":"OG1-Buero-4" },
+      { "level":"OG2", "room":"Buero 2.1", "on":[150,150,130], "id":"OG2-Buero-1" },
+      { "level":"OG2", "room":"Buero 2.2", "on":[150,150,130], "id":"OG2-Buero-2" },
+      { "level":"OG2", "room":"Buero 2.3", "on":[150,150,130], "id":"OG2-Buero-3" },
+      { "level":"OG2", "room":"Buero 2.4", "on":[150,150,130], "id":"OG2-Buero-4" }
+    ],
+    "animation": [
+      { "lightsIndex": 2, "stepType": "on", "time": 1, "comment": "Fr. S. wacht auf" },
+      { "lightsIndex": 2, "stepType": "off", "time": 55, "comment": "Fr. S. geht ins Bad" },
+      { "lightsIndex": 1, "stepType": "on", "time": 56, "comment": "Fr. S. duscht" },
+      { "lightsIndex": 2, "stepType": "on", "time": 250, "comment": "Fr. S. zieht sich an" },
+      { "lightsIndex": 0, "stepType": "on", "time": 350, "comment": "Fr. S. setzt einen Kaffee auf und raeumt auf" },
+      { "lightsIndex": 1, "stepType": "off", "time": 355, "comment": "Fr. S. ist fertig im Bad" },
+      { "lightsIndex": 2, "stepType": "off", "time": 400, "comment": "Fr. S. ist fertig im Schlafzimmer" },
+      { "lightsIndex": 0, "stepType": "off", "time": 500, "comment": "Fr. S. hat gefruehstueckt und verlaesst die Wohnung" },
+      { "lightsIndex": 3, "stepType": "on", "time": 520, "comment": "Fr. S. ist im Buero" },
+      { "lightsIndex": 4, "stepType": "on", "time": 700, "comment": "Fr. S. ist im Buero" }
+    ]
+}
\ No newline at end of file
diff --git a/bak/test.js b/bak/test.js
new file mode 100644
index 0000000..7ea97b0
--- /dev/null
+++ b/bak/test.js
@@ -0,0 +1,33 @@
+let x = {
+	"animation":
+	[
+		{"comment":"Frau Schlemmer wacht auf","time":1,"stepType":"on","lightsIndex":2},
+		{"comment":"Frau Schlemmer geht ins Bad","time":55,"stepType":"off","lightsIndex":2},
+		{"comment":"Frau Schlemmer duscht","time":56,"stepType":"on","lightsIndex":1},
+		{"comment":"Frau Schlemmer zieht sich an","time":250,"stepType":"on","lightsIndex":2},
+		{"comment":"Frau Schlemmer setzt einen Kaffee auf und r\xc3\x83\xc2\x83\xc3\x82\xc2\xa4umt auf","time":350,"stepType":"on","lightsIndex":0},
+		{"comment":"Frau Schlemmer ist fertig im Bad","time":355,"stepType":"off","lightsIndex":1},
+		{"comment":"Frau Schlemmer ist fertig im Schlafzimmer","time":400,"stepType":"off","lightsIndex":2},
+		{"comment":"Frau Schlemmer hat gefr\xc3\x83\xc2\x83\xc3\x82\xc2\xbchst\xc3\x83\xc2\x83\xc3\x82\xc2\xbcckt und verl\xc3\x83\xc2\x83\xc3\x82\xc2\xa4sst die Wohnung","time":500,"stepType":"off","lightsIndex":0},
+		{"comment":"Frau Schlemmer ist im B\xc3\x83\xc2\x83\xc3\x82\xc2\xbcro","time":520,"stepType":"on","lightsIndex":3},{"comment":"Frau Schlemmer ist im B\xc3\x83\xc2\x83\xc3\x82\xc2\xbcro","time":700,"stepType":"on","lightsIndex":4}
+	],
+	"lights":
+	[
+		{"id":"EG-WoZi","on":[200,200,200],"room":"Wohnzimmer","level":"EG"},
+		{"id":"EG-Bad","on":[150,150,150],"room":"Bad","level":"EG"},
+		{"id":"EG-Schlafen","on":[130,130,130],"room":"Schlafzimmer","level":"EG"},
+		{"id":"EG-Buero-1","on":[150,150,130],"room":"Buero 0.1","level":"EG"},
+		{"id":"EG-Buero-2","on":[150,150,130],"room":"Buero 0.2","level":"EG"},
+		{"id":"OG1-Buero-1","on":[150,150,130],"room":"Buero 1.1","level":"OG1"},
+		{"id":"OG1-Buero-2","on":[150,150,130],"room":"Buero 1.2","level":"OG1"},
+		{"id":"OG1-Buero-3","on":[150,150,130],"room":"Buero 1.3","level":"OG1"},
+		{"id":"OG1-Buero-4","on":[150,150,130],"room":"Buero 1.4","level":"OG1"},
+		{"id":"OG2-Buero-1","on":[150,150,130],"room":"Buero 2.1","level":"OG2"},
+		{"id":"OG2-Buero-2","on":[150,150,130],"room":"Buero 2.2","level":"OG2"},
+		{"id":"OG2-Buero-3","on":[150,150,130],"room":"Buero 2.3","level":"OG2"},
+		{"id":"OG2-Buero-4","on":[150,150,130],"room":"Buero 2.4","level":"OG2"}
+	],
+	"comment":"lights.cfg / JSON"
+};
+
+let LEDstate= [{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0},{"targetBlue":0,"targetGreen":0,"targetRed":0,"currentBlue":0,"currentGreen":0,"currentRed":0,"clockEndMinutes":59,"clockEndHours":23,"modeStep":0,"numLEDCtrl":0,"currentLEDCtrl":0,"mode":"onoff","rampTickDelta":0,"nextTick":0,"index":0}] ;
diff --git a/fs/animateLights.js b/fs/animateLights.js
deleted file mode 100755
index c62c6e7..0000000
--- a/fs/animateLights.js
+++ /dev/null
@@ -1,162 +0,0 @@
-load('api_rpc.js');
-load("api_neopixel.js");
-load("api_file.js");
-
-
-let colors = {
-  black: {r:0, g:0, b:0},
-  red: {r:255, g:0, b:0},
-  green: {r:0, g:255, b:0},
-  blue: {r:0, g:0, b:255},
-  yellow: {r:255, g:255, b:0},
-  orange: {r:255, g:127, b:0},
-  purple: {r:255, g:0, b:255},
-  white: {r:255, g:255, b:255},
-  dimmedWhite: {r:50, g:50, b:50}
-};
-
-
-let LightAnimation = {
-  numberOfBulbs: 11,
-  ledPin: 2,
-  running: false,
-  mode: "demo",
-  generalBrightnessDivider: 3,
-  colorSequence: [
-    colors.dimmedWhite,
-    colors.red,
-    colors.green,
-    colors.blue,
-    colors.yellow,
-    colors.orange,
-    colors.purple,
-    colors.red,
-    colors.red,
-    colors.green,
-    colors.green,
-    colors.white,
-    colors.white
-  ]
-};
-
-// Add RPC handlers
-
-RPC.addHandler('HouseLightning.Start', function(args) {
-  LightAnimation.running = true;
-  LightAnimation.mode = "run";
-  return {result: 'ok'};
-}, null);
-
-RPC.addHandler('HouseLightning.Stop', function(args) {
-  LightAnimation.running = true; // first we want to turn off LEDs, thus needs stop-mode
-  LightAnimation.mode = "stop";
-  return {result: 'ok'};
-}, null);
-
-RPC.addHandler('HouseLightning.DemoMode', function(args) {
-  LightAnimation.mode = "demo";
-  LightAnimation.running = true;
-  return {result: 'ok'};
-}, null);
-
-RPC.addHandler('HouseLightning.CycleMode', function(args) {
-  LightAnimation.mode = "cycle";
-  LightAnimation.running = true;
-  return {result: 'ok'};
-}, null);
-
-RPC.addHandler('HouseLightning.GetAnimationConfig', function(args) {
-  return LightAnimation.animationConfig;
-}, null);
-
-RPC.addHandler('HouseLightning.SetAnimationConfig', function(args) {
-  if (args !== undefined && args.config !== undefined) {
-    LightAnimation.animationConfig = JSON.parse(args.config);
-    if (LightAnimation.animationConfig.comment === undefined) {
-      return {error: 'config is incomplete or invalid / comment not found'};
-    }
-    if (LightAnimation.animationConfig.lights === undefined) {
-      return {error: 'config is incomplete or invalid / lights definition not found'};
-    }
-    if (LightAnimation.animationConfig.lights[0] === undefined) {
-      return {error: 'config is incomplete or invalid / lights not an array?'};
-    }
-    let i;
-    for (i=0; i<LightAnimation.animationConfig.lights.length; ++i) {
-      if (LightAnimation.animationConfig.lights[i].level === undefined) {
-        return {error: 'config is incomplete or invalid / level missing in lights definition'};
-      }
-      if (LightAnimation.animationConfig.lights[i].room === undefined) {
-        return {error: 'config is incomplete or invalid / room missing in lights definition'};
-      }
-      if (LightAnimation.animationConfig.lights[i].on === undefined) {
-        return {error: 'config is incomplete or invalid / on missing in lights definition'};
-      }
-      if (LightAnimation.animationConfig.lights[i].on[0] === undefined) {
-        return {error: 'config is incomplete or invalid / on not an array in lights definition?'};
-      }
-      if (LightAnimation.animationConfig.lights[i].on.length !== 3) {
-        return {error: 'config is incomplete or invalid / on must have 3 elements for R/G/B in lights definition?'};
-      }
-      if (LightAnimation.animationConfig.lights[i].id === undefined) {
-        return {error: 'config is incomplete or invalid / id missing in lights definition'};
-      }
-    }
-    return {result: 'ok'};
-  } else {
-    return {error: 'parameter config is required'};
-  }
-}, null);
-
-function runNeopixel(strip, shiftBy) {
-  let i=0, colorIndex=0, color;
-  
-  for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
-    colorIndex = shiftBy % LightAnimation.colorSequence.length;
-    color = LightAnimation.colorSequence[colorIndex];
-    strip.setPixel(i, color.r/LightAnimation.generalBrightnessDivider, color.g/LightAnimation.generalBrightnessDivider, color.b/LightAnimation.generalBrightnessDivider);
-    // print("runNeo shift =", shiftBy, ", colorIndex =", colorIndex, ", r =", color.r, ", g =", color.g, ", b =", color.b);
-    shiftBy++;
-  }
-  strip.show();
-}
-
-// initialize module
-let configString = "";
-configString = File.read("lights.cfg");
-if (configString === "" || configString === null) configString = "***default***";
-// print("configString = ", configString);
-LightAnimation.animationConfig = JSON.parse(configString);
-
-
-// initialize neoPixel
-let colorOrder = NeoPixel.GRB;
-let strip = NeoPixel.create(LightAnimation.ledPin, LightAnimation.numberOfBulbs, colorOrder);
-strip.clear();
-strip.show();
-// initialize test pattern
-let i = 0;
-for (i=0; i<LightAnimation.numberOfBulbs; ++i) {
-  if (i % 2) {
-    strip.setPixel(i, 80, 20, 20);
-  } else {
-    strip.setPixel(i, 20, 80, 20);
-  }
-}
-strip.show();
-
-let shiftAnimation = 1;
-
-Timer.set(1990 /* msec */, true /* repeat */, function() {
-  if (LightAnimation.running) {
-    if (LightAnimation.mode === "demo") {
-      runNeopixel(strip, shiftAnimation);
-      shiftAnimation++;
-      print("*** demo-mode, next shift=", shiftAnimation);
-    } else if (LightAnimation.mode === "stop") {
-      strip.clear();
-      strip.show();
-      LightAnimation.running = false;
-    } else print("*** no-ack, mode =", LightAnimation.mode);
-  } else print("*** stopped");
-}, null);
diff --git a/fs/init.js b/fs/init.js
index a422e70..393d911 100644
--- a/fs/init.js
+++ b/fs/init.js
@@ -1,32 +1,65 @@
 load('api_config.js');
 load('api_gpio.js');
 load('api_mqtt.js');
+load('api_net.js');
 load('api_sys.js');
 load('api_rpc.js');
 load('api_timer.js');
-load("animateLights.js");
+
+let led = Cfg.get('pins.led');
 
 // Helper C function get_led_gpio_pin() in src/main.c returns built-in LED GPIO
-let onBoardLed = ffi('int get_led_gpio_pin()')();
+// let onBoardLed = ffi('int get_led_gpio_pin()')();
+
+let button = Cfg.get('pins.button');
+let topic = '/devices/' + Cfg.get('device.id') + '/events';
+
+print('LED GPIO:', led, 'button GPIO:', button);
 
 let getInfo = function() {
-  return JSON.stringify({total_ram: Sys.total_ram(), free_ram: Sys.free_ram()});
+  return JSON.stringify({
+    total_ram: Sys.total_ram(),
+    free_ram: Sys.free_ram()
+  });
 };
 
-// Publish to MQTT topic on a button press. Button is wired to GPIO pin 0
-GPIO.set_button_handler(0, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
-  let topic = '/devices/' + Cfg.get('device.id') + '/events';
-  let message = getInfo();
-  let ok = MQTT.pub(topic, message, 1);
-  print('Published:', ok ? 'yes' : 'no', 'topic:', topic, 'message:', message);
-}, null);
-
-
 // Blink built-in LED every second
-GPIO.set_mode(onBoardLed, GPIO.MODE_OUTPUT);
-
-// Tick-Tock generation
-Timer.set(1000 /* 1 sec */, true /* repeat */, function() {
-  let value = GPIO.toggle(onBoardLed);
+GPIO.set_mode(led, GPIO.MODE_OUTPUT);
+Timer.set(5000 /* 1 sec */, true /* repeat */, function() {
+  let value = GPIO.toggle(led);
   print(value ? 'Tick' : 'Tock', 'uptime:', Sys.uptime(), getInfo());
 }, null);
+
+// Publish to MQTT topic on a button press. Button is wired to GPIO pin 0
+/*
+GPIO.set_button_handler(button, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
+  let message = getInfo();
+  let ok = MQTT.pub(topic, message, 1);
+  print('Published:', ok, topic, '->', message);
+}, null);
+*/
+
+// Monitor network connectivity.
+Net.setStatusEventHandler(function(ev, arg) {
+  let evs = '???';
+  if (ev === Net.STATUS_DISCONNECTED) {
+    evs = 'DISCONNECTED';
+  } else if (ev === Net.STATUS_CONNECTING) {
+    evs = 'CONNECTING';
+  } else if (ev === Net.STATUS_CONNECTED) {
+    evs = 'CONNECTED';
+  } else if (ev === Net.STATUS_GOT_IP) {
+    evs = 'GOT_IP';
+  }
+  print('== Net event:', ev, evs);
+}, null);
+
+// Initialize LED controller
+let addColor = ffi('void addColor(char *,int,int,int)');
+let addLedDefinition = ffi('void addLedDefinition(char *, char *, char *, int, int, int)');
+let addAnimationStep = ffi('void addAnimationStep(int, int, int)');
+let LEDMode_on=1, LEDMode_off=2, LEDMode_blink=3, LEDMode_tv=4, LEDMode_fire=5;
+let LEDStateEngine_start = ffi('void startLEDStateEngine(void)');
+let LEDStateEngine_pause = ffi('void pauseLEDStateEngine(void)');
+
+
diff --git a/mos.yml b/mos.yml
index 4879d33..9a57ac9 100644
--- a/mos.yml
+++ b/mos.yml
@@ -29,7 +29,10 @@ libs:
   - origin: https://github.com/mongoose-os-libs/aws
   - origin: https://github.com/mongoose-os-libs/mjs
 config_schema:
-  - ["i2c.enable", true]
+  - ["i2c.enable", false]
+  - ["led.pin", "i", 2, {title: "Pin for data to WS2812 based LED chain"}]
+  - ["led.useDefaults", "b", true, {title: "Use default values for colors, led-definitions, animations"}]
+  - ["led.count", "i", 5, {title: "Number of LEDs connected in the chain"}]
 build_vars:
   MGOS_ENABLE_ONEWIRE: 1
 cflags: []
diff --git a/src/AnimationConfig.c b/src/AnimationConfig.c
new file mode 100644
index 0000000..9bc1158
--- /dev/null
+++ b/src/AnimationConfig.c
@@ -0,0 +1,93 @@
+/* AnimationConfig.cpp */
+
+#include "LEDDefinition.h"
+#include "AnimationConfig.h"
+
+AnimationConfig theAnimationConfig;
+
+uint16_t getNumberOfAnimationSteps() { return theAnimationConfig.numberAnimationSteps; };
+
+static uint8_t verifyAnimationStepIndex(uint8_t index) {
+	if (/*index < 0 ||*/ index >= MAX_ANIMATION_STEPS) {
+		LOG(LL_ERROR, ("Invalid animation step index %d, set to 0", index));
+		index = 0;
+	}
+	return index;
+}
+
+static void AnimationStep_init(uint16_t animationStepIndex, uint8_t ledIndex, LEDMode m, uint32_t duration) {
+	animationStepIndex = verifyAnimationStepIndex(animationStepIndex);
+	theAnimationConfig.animationStep[animationStepIndex].ledIndex = ledIndex;
+	theAnimationConfig.animationStep[animationStepIndex].ledMode = m;
+	theAnimationConfig.animationStep[animationStepIndex].durationTicks = duration;
+}
+
+void AnimationStep_add(uint8_t ledIndex, LEDMode m, uint32_t duration) {
+	uint16_t index = theAnimationConfig.numberAnimationSteps;
+	if (index >= MAX_ANIMATION_STEPS) {
+		LOG(LL_ERROR, ("AnimationStep_add: too many animation steps! ledIndex=%d", ledIndex));
+		return;
+	}
+	index++;
+	theAnimationConfig.numberAnimationSteps++;
+	theAnimationConfig.animationStep[index].ledIndex = ledIndex;
+	theAnimationConfig.animationStep[index].ledMode = m;
+	theAnimationConfig.animationStep[index].durationTicks = duration;
+}
+
+
+void AnimationConfig_init(bool loadDefaultData) {
+	int i;
+
+	for (i=0; i<MAX_ANIMATION_STEPS; ++i) {
+		AnimationStep_init(i, -1, LEDMode_off, 0);
+	}
+	theAnimationConfig.numberAnimationSteps = 0;
+
+	if (loadDefaultData) {
+		AnimationStep_add(0, LEDMode_on, 30);
+		AnimationStep_add(0, LEDMode_off, 30);
+		AnimationStep_add(0, LEDMode_on, 10);
+		AnimationStep_add(0, LEDMode_off, 20);
+		AnimationStep_add(0, LEDMode_on, 50);
+		AnimationStep_add(0, LEDMode_off, 10);
+		AnimationStep_add(0, LEDMode_on, 5);
+		AnimationStep_add(0, LEDMode_off, 5);
+		AnimationStep_add(1, LEDMode_on, 20);
+		AnimationStep_add(1, LEDMode_off, 60);
+		AnimationStep_add(1, LEDMode_on, 10);
+		AnimationStep_add(1, LEDMode_off, 70);
+		AnimationStep_add(2, LEDMode_off, 20);
+		AnimationStep_add(2, LEDMode_on, 80);
+		AnimationStep_add(2, LEDMode_off, 5);
+		AnimationStep_add(2, LEDMode_on, 60);
+		AnimationStep_add(2, LEDMode_off, 10);
+		AnimationStep_add(3, LEDMode_on, 11);
+		AnimationStep_add(3, LEDMode_off, 11);
+		AnimationStep_add(4, LEDMode_on, 12);
+		AnimationStep_add(4, LEDMode_off, 12);
+		AnimationStep_add(4, LEDMode_on, 13);
+		AnimationStep_add(4, LEDMode_off, 13);
+
+		for (i=5; i<LEDStateEngine_getNumberOfLeds(); ++i) {
+			AnimationStep_add(i, LEDMode_on, 300);
+		}
+	}
+}
+
+uint16_t AnimationConfig_getNextAnimationStepForLED(uint8_t led, uint16_t currentAnimationStep) {
+	for (uint16_t i=currentAnimationStep+1; i<MAX_ANIMATION_STEPS; ++i) {
+		if (theAnimationConfig.animationStep[i].ledIndex == led) {
+			return i;
+		}
+	}
+	// nothing found, thus start from beginning again
+	for (uint16_t i=0; i<=currentAnimationStep; ++i) {
+		if (theAnimationConfig.animationStep[i].ledIndex == led) {
+			return i;
+		}
+	}
+	// ERROR, should never reach this code
+	LOG(LL_ERROR, ("getNextAnimationStepForLED -- could not find entry for led %d, current step=%d", led, currentAnimationStep));
+	return 0;
+}
diff --git a/src/AnimationConfig.h b/src/AnimationConfig.h
new file mode 100644
index 0000000..ed71659
--- /dev/null
+++ b/src/AnimationConfig.h
@@ -0,0 +1,33 @@
+/* AnimationConfig.h */
+
+#ifndef AnimationConfig_loaded
+#define AnimationConfig_loaded
+
+#include <stdio.h>
+#include "fw/src/mgos.h"
+#include "common/cs_dbg.h"
+#include "mjs.h"
+#include "LEDDefinition.h"
+#include "LEDState.h"
+
+#define MAX_ANIMATION_STEPS 100
+
+typedef struct AnimationStep_t {
+	uint8_t ledIndex;
+	LEDMode ledMode;
+	uint32_t durationTicks;
+} AnimationStep;
+
+typedef struct AnimationConfig_t {
+		uint16_t numberAnimationSteps;
+		AnimationStep animationStep[MAX_ANIMATION_STEPS];
+} AnimationConfig;
+
+extern AnimationConfig theAnimationConfig;
+
+extern void AnimationConfig_init(bool loadDefaultData);
+extern uint16_t getNumberOfAnimationSteps();
+extern void AnimationStep_add(uint8_t ledIndex, LEDMode m, uint32_t duration);
+extern uint16_t AnimationConfig_getNextAnimationStepForLED(uint8_t led, uint16_t currentAnimationStep);
+
+#endif
\ No newline at end of file
diff --git a/src/LEDDefinition.c b/src/LEDDefinition.c
new file mode 100644
index 0000000..92bb671
--- /dev/null
+++ b/src/LEDDefinition.c
@@ -0,0 +1,97 @@
+/* LEDDefinition.cpp */
+
+#include "LEDDefinition.h"
+
+LEDColor offColor = { name: "off", red: 0, green: 0, blue: 0};
+LEDColor dimmedRedColor = { name: "dimmedRed", red: 80, green: 0, blue: 0};
+
+#define MAX_COLORS 20
+static LEDColor ledColor[MAX_COLORS];
+static int numberOfColors = 0;
+
+LEDColor *LEDColor_get(char *name) {
+	for (int i=0; i<numberOfColors; ++i) {
+		if (strcmp(name, ledColor[i].name) == 0)
+			return &ledColor[i];
+	}
+	LOG(LL_ERROR, ("Error: Color not found: %s", name));
+	return &offColor;
+}
+
+void LEDColor_add(char *name, uint8_t red, uint8_t green, uint8_t blue) {
+	if (numberOfColors < MAX_COLORS) {
+		ledColor[numberOfColors].name = name;
+		ledColor[numberOfColors].red = red;
+		ledColor[numberOfColors].green = green;
+		ledColor[numberOfColors].blue = blue;
+		++numberOfColors;
+	} else {
+		LOG(LL_ERROR, ("Too many color definitions, igrnoring %s (%d, %d, %d)", name, red, green, blue));
+	}
+}
+
+void LEDColor_init(bool loadDefaultData) {
+	if (loadDefaultData) {
+		LEDColor_add("off", 0, 0, 0);
+		LEDColor_add("red", 255, 0, 0);
+		LEDColor_add("green", 0, 255, 0);
+		LEDColor_add("blue", 0, 0, 255);
+		LEDColor_add("brightWhite", 255, 255, 255);
+		LEDColor_add("white", 180, 180, 180);
+		LEDColor_add("dimmedWhite", 100, 100, 100);
+		LEDColor_add("dimmedRed", 100, 0, 0);
+	}
+}
+
+LEDDefinition ledDefinition[MAX_LEDS];
+static int numberOfLEDDefinitions = 0;
+
+static int verifyLedDefinitionNum(int ledNum) {
+	if (ledNum < 0) {
+		LOG(LL_ERROR, ("Error: verifyLedDefinitionNum failed for ledNum=%d", ledNum));
+		return 0;
+	}
+	return ledNum % numberOfLEDDefinitions;
+}
+
+LEDDefinition *LEDDefinition_get(int ledNum) {
+	ledNum = verifyLedDefinitionNum(ledNum);
+	return &ledDefinition[ledNum];
+}
+
+void LEDDefinition_add(char *level, char *room, char *id, uint8_t red, uint8_t green, uint8_t blue) {
+	if (numberOfLEDDefinitions < MAX_LEDS) {
+		ledDefinition[numberOfLEDDefinitions].level = level;
+		ledDefinition[numberOfLEDDefinitions].room = room;
+		ledDefinition[numberOfLEDDefinitions].id = id;
+		ledDefinition[numberOfLEDDefinitions].onColor.red = red;
+		ledDefinition[numberOfLEDDefinitions].onColor.green = green;
+		ledDefinition[numberOfLEDDefinitions].onColor.blue = blue;
+		++numberOfLEDDefinitions;
+	} else {
+		LOG(LL_ERROR, ("Error: Too many LED Definitions to load, ignoring level=%s, room=%s, id=%s", level, room, id));
+	}
+}
+void LEDDefinition_init(int numberOfLeds, bool loadDefaultData) {
+	// initialize
+	numberOfLEDDefinitions = 0;
+	if (loadDefaultData) {
+		do {
+			LEDDefinition_add("EG", "Wohnzimmer", "EG-WoZi", 200,200,200);
+			LEDDefinition_add("EG", "Bad", "EG-Bad", 130,130,130);
+			LEDDefinition_add("EG", "Schlafzimmer", "EG-Schlafen", 150,150,130);
+			LEDDefinition_add("EG", "Buero 0.1", "EG-Buero-1", 150,130,130);
+			LEDDefinition_add("EG", "Buero 0.2", "EG-Buero-2", 150,200,200);
+			LEDDefinition_add("EG", "Flur", "EG-Flur-1", 100,100,100);
+			LEDDefinition_add("EG", "Flur", "EG-Flur-2", 140,100,100);
+			LEDDefinition_add("OG1", "Buero 1.1", "OG1-WoZi", 200,200,200);
+			LEDDefinition_add("OG1", "Bad OG1", "OG1-Bad", 130,130,130);
+			LEDDefinition_add("OG1", "Buero 1.2", "OG1-Schlafen", 150,150,130);
+			LEDDefinition_add("OG1", "Buero 1.3", "OG1Buero-1", 150,150,130);
+			LEDDefinition_add("OG1", "Buero 1.4", "OG1-Buero-2", 150,200,200);
+			LEDDefinition_add("OG1", "Flur", "OG1-Flur-1", 100,100,100);
+			LEDDefinition_add("OG1", "Flur", "OG1-Flur-2", 140,100,100);
+		} while(numberOfLEDDefinitions < numberOfLeds);
+	}
+}
+
diff --git a/src/LEDDefinition.h b/src/LEDDefinition.h
new file mode 100644
index 0000000..7129c47
--- /dev/null
+++ b/src/LEDDefinition.h
@@ -0,0 +1,41 @@
+/* LEDDefinition.h */
+
+#ifndef LEDDefinition_included
+#define LEDDefinition_included
+
+#include <stdio.h>
+#include "fw/src/mgos.h"
+#include "mjs.h"
+#include "mongoose/mongoose.h"
+#include "common/cs_dbg.h"
+
+#define MAX_LEDS 100
+
+typedef enum LEDMode_e { LEDMode_on, LEDMode_off, LEDMode_blink, LEDMode_tv, LEDMode_fire } LEDMode;
+
+typedef struct LEDColor_t {
+	char *name;
+	uint8_t red;
+	uint8_t green;
+	uint8_t blue;
+} LEDColor;
+
+extern LEDColor offColor, dimmedRedColor;
+extern void LEDColor_init(bool loadDefaultData);
+extern LEDColor *LEDColor_get(char *name);
+extern void LEDColor_add(char *name, uint8_t red, uint8_t green, uint8_t blue);
+
+typedef struct LEDDefinition_t {
+	char *level;
+	char *room;
+	char *id;
+	LEDColor onColor;
+} LEDDefinition;
+
+extern LEDDefinition ledDefinition[MAX_LEDS];
+
+extern LEDDefinition *LEDDefinition_get(int ledNum);
+extern void LEDDefinition_init(int numberOfLeds, bool loadDefaultData);
+void LEDDefinition_add(char *level, char *room, char *id, uint8_t red, uint8_t green, uint8_t blue);
+
+#endif
\ No newline at end of file
diff --git a/src/LEDState.c b/src/LEDState.c
new file mode 100644
index 0000000..f8b6d40
--- /dev/null
+++ b/src/LEDState.c
@@ -0,0 +1,113 @@
+/* LEDState.c */
+
+#include "LEDDefinition.h"
+#include "LEDState.h"
+#include "AnimationConfig.h"
+
+
+static LEDStateEngine theLEDStateEngine;
+
+void LEDStateEngine_setNumberOfLeds(int numberOfLeds) {
+	if (numberOfLeds < 1 || numberOfLeds > MAX_LEDS) {
+		LOG(LL_ERROR, ("Invalid number of LEDs %d", numberOfLeds));
+		numberOfLeds = MAX_LEDS;
+	}
+	theLEDStateEngine.numberOfLeds = numberOfLeds;
+}
+
+void LEDStateEngine_init(int numberOfLeds) {
+	LEDStateEngine_setNumberOfLeds(numberOfLeds);
+	theLEDStateEngine.comment = "";
+	for (int i=0; i<numberOfLeds; ++i) {
+		LEDstate_init(i, LEDDefinition_get(i));
+	}
+}
+
+void LEDStateEngine_addComment(char *comment) {
+	theLEDStateEngine.comment = comment;
+}
+
+uint16_t LEDStateEngine_getNumberOfLeds() {
+	return theLEDStateEngine.numberOfLeds;
+}
+
+
+void LEDStateEngine_tick() {
+	for (int i=0; i<theLEDStateEngine.numberOfLeds; ++i) {
+		LEDState_tick(i);
+	}
+}
+
+void LEDState_tick(int ledNum) {
+	LEDState *state = &theLEDStateEngine.ledState[ledNum];
+	if (/*state->index < 0 ||*/ state->index >= theLEDStateEngine.numberOfLeds)
+		return; // ignore LED entries, that are not setup correctly
+	state->currentTick++;
+	if (state->currentTick == state->nextTick) {
+		// perform/initiate next state change
+		state->currentAnimationStep = AnimationConfig_getNextAnimationStepForLED(ledNum, state->currentAnimationStep);
+		state->nextTick = state->currentTick + theAnimationConfig.animationStep[state->currentAnimationStep].durationTicks;
+		state->mode = theAnimationConfig.animationStep[state->currentAnimationStep].ledMode;
+		switch (state->mode) {
+			case LEDMode_on:
+				state->currentColor = state->onColor;
+				break;
+			case LEDMode_off:
+				state->currentColor = offColor;
+				break;
+			default:
+				state->currentColor = dimmedRedColor;
+				break;
+		}
+	}
+	// do animations, if necessary
+}
+
+LEDState *LEDStateEngine_getLedState(int n) {
+	if (n>=0 && n<theLEDStateEngine.numberOfLeds)
+		return &theLEDStateEngine.ledState[n];
+	LOG(LL_ERROR, ("*** LEDStateEngine_getLedState -- invalid LED number given: %d", n));
+	return &theLEDStateEngine.ledState[0];
+}
+
+/* LEDState */
+static int verifyLedNumber(int n) {
+	if (n < 0 || n >= theLEDStateEngine.numberOfLeds) {
+		LOG(LL_ERROR, ("*** Invalid LED number %d, set to zero", n));
+		n = 0;
+	}
+	return n;
+}
+
+void LEDstate_initDefault(int n, LEDMode defaultMode) {
+	n = verifyLedNumber(n);
+	LEDState *state = &theLEDStateEngine.ledState[n];
+	state->index = n;
+	state->mode = defaultMode;
+	state->nextTick = 0;
+	state->ledDefinition = LEDDefinition_get(n);
+}
+
+void LEDstate_init(int n, LEDDefinition *ledDefinition) {
+	n = verifyLedNumber(n);
+	LEDstate_initDefault(n, LEDMode_off);
+	LEDState *state = LEDStateEngine_getLedState(n);
+	state->index = n;
+	state->ledDefinition = ledDefinition;
+	state->onColor = ledDefinition->onColor;
+}
+
+
+int LEDState_getLedRed(int ledNum) {
+	LEDState *state = LEDStateEngine_getLedState(ledNum);
+	return state->currentColor.red;
+}
+int LEDState_getLedGreen(int ledNum) {
+	LEDState *state = LEDStateEngine_getLedState(ledNum);
+	return state->currentColor.green;
+}
+int LEDState_getLedBlue(int ledNum) {
+	LEDState *state = LEDStateEngine_getLedState(ledNum);
+	return state->currentColor.blue;
+}
+
diff --git a/src/LEDState.h b/src/LEDState.h
new file mode 100644
index 0000000..1319374
--- /dev/null
+++ b/src/LEDState.h
@@ -0,0 +1,47 @@
+/* LEDState.h */
+
+#ifndef LEDState_loaded
+#define LEDState_loaded
+
+#include "LEDDefinition.h"
+
+typedef struct LEDState_t {
+		uint8_t index;
+		LEDDefinition *ledDefinition;
+		uint32_t currentTick;
+		uint32_t nextTick;
+		uint8_t rampTickDelta;
+		LEDMode mode;
+		uint8_t currentLEDCtrlIndex; // ???????????
+		uint16_t currentAnimationStep;
+		uint8_t modeStep; // sub-state within a mode
+		uint8_t clockEndHours;
+		uint8_t clockEndMinutes;
+		LEDColor currentColor;
+		LEDColor onColor; // for target of on-mode
+		LEDColor targetColor;
+} LEDState;
+
+typedef struct LEDStateEngine_t {
+		uint8_t numberOfLeds;
+		LEDState ledState[MAX_LEDS];
+		char *comment;
+} LEDStateEngine;
+
+/* LEDStateEngine */
+extern void LEDStateEngine_init(int numberOfLeds);
+extern void LEDStateEngine_addComment(char *comment);
+
+extern LEDState *LEDStateEngine_getLedState(int n);
+extern void LEDStateEngine_tick();
+extern uint16_t LEDStateEngine_getNumberOfLeds();
+
+/* LEDState */
+extern void LEDstate_init(int n, LEDDefinition *ledDefinition);
+extern void LEDstate_initDefault(int n, LEDMode defaultMode);
+extern void LEDState_tick(int ledNum);
+extern int LEDState_getLedRed(int ledNum);
+extern int LEDState_getLedGreen(int ledNum);
+extern int LEDState_getLedBlue(int ledNum);
+
+#endif
diff --git a/src/main.c b/src/main.c
index 98ef83f..aede589 100644
--- a/src/main.c
+++ b/src/main.c
@@ -2,13 +2,17 @@
 
 #include "common/platform.h"
 #include "common/cs_file.h"
-#include "fw/src/mgos_app.h"
-#include "fw/src/mgos_gpio.h"
-#include "fw/src/mgos_sys_config.h"
-#include "fw/src/mgos_timers.h"
+#include "mgos_app.h"
+#include "mgos_gpio.h"
+#include "mgos_sys_config.h"
+#include "mgos_system.h"
+#include "mgos_timers.h"
 #include "fw/src/mgos_hal.h"
 #include "fw/src/mgos_dlsym.h"
 #include "mjs.h"
+#include "LEDDefinition.h"
+#include "AnimationConfig.h"
+#include "LEDState.h"
 
 #if CS_PLATFORM == CS_P_ESP8266
 #define LED_GPIO 2 /* On ESP-12E there is a blue LED connected to GPIO2  */
@@ -27,9 +31,64 @@
 #endif
 
 int get_led_gpio_pin(void) {
-  return LED_GPIO;
+	return LED_GPIO;
+}
+
+LEDStateEngine ledStateEngine;
+static bool stateEngineRunning = false;
+
+static void timer_cb() {
+	if (stateEngineRunning) {
+		LOG(LL_INFO, ("tick"));
+		LEDStateEngine_tick();
+	} else {
+		LOG(LL_INFO, ("--paused--"));
+	}
+}
+
+static void delayed_boot() {
+	mgos_set_timer(100, true, timer_cb, NULL); // every 0.1 second call timer_cb
 }
 
 enum mgos_app_init_result mgos_app_init(void) {
-  return MGOS_APP_INIT_SUCCESS;
+	int numberOfLeds = 20; /*mgos_sys_config_get_led_count()*/
+	bool loadDefaultData = true; /*mgos_sys_config_get_led_useDefaults()*/
+
+	LEDColor_init(loadDefaultData);
+	LEDDefinition_init(numberOfLeds, loadDefaultData);
+	AnimationConfig_init(loadDefaultData);
+	LEDStateEngine_init(numberOfLeds);
+	if (loadDefaultData) {
+		stateEngineRunning = true;
+	}
+
+	mgos_set_timer(5000, false, delayed_boot, NULL); // after 5 seconds boot the functions
+	return MGOS_APP_INIT_SUCCESS;
+}
+
+// javascript adapter functions:
+void addColor(char *name, int red, int green, int blue) {
+	LEDColor_add(name, red, green, blue);
+}
+void addLedDefinition(char *level, char *room, char *id, int red, int green, int blue) {
+	LEDDefinition_add(level, room, id, red, green, blue);
+}
+void addAnimationStep(int ledIndex, int ledMode, int duration) {
+	LEDMode m = LEDMode_off;
+	switch (ledMode) {
+		case 1: m = LEDMode_on; break;
+		case 2: m = LEDMode_off; break;
+		case 3: m = LEDMode_blink; break;
+		case 4: m = LEDMode_tv; break;
+		case 5: m = LEDMode_fire; break;
+		default: m = LEDMode_off;
+	}
+	AnimationStep_add(ledIndex, m, duration);
+}
+
+void startLEDStateEngine(void) {
+	stateEngineRunning = true;
+}
+void pauseLEDStateEngine(void) {
+	stateEngineRunning = false;
 }