diff --git a/.gitignore b/.gitignore
new file mode 100644
index 0000000..6941d49
--- /dev/null
+++ b/.gitignore
@@ -0,0 +1,3 @@
+build/
+*.bak
+*.tmp
diff --git a/fs/animateLights.js b/fs/animateLights.js
new file mode 100755
index 0000000..4687cca
--- /dev/null
+++ b/fs/animateLights.js
@@ -0,0 +1,155 @@
+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: 3,
+  ledPin: 4,
+  running: false,
+  mode: "demo",
+  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;
+  return {result: 'ok'};
+}, null);
+
+RPC.addHandler('HouseLightning.Stop', function(args) {
+  LightAnimation.running = false;
+  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, color.g, 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);
+
+
+// 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 print("*** no-ack, mode =", LightAnimation.mode);
+  } else print("*** stopped");
+}, null);
diff --git a/fs/init.js b/fs/init.js
index ac1f626..a422e70 100644
--- a/fs/init.js
+++ b/fs/init.js
@@ -2,23 +2,17 @@ load('api_config.js');
 load('api_gpio.js');
 load('api_mqtt.js');
 load('api_sys.js');
+load('api_rpc.js');
 load('api_timer.js');
-load("api_neopixel.js");
+load("animateLights.js");
 
 // Helper C function get_led_gpio_pin() in src/main.c returns built-in LED GPIO
-let led = ffi('int get_led_gpio_pin()')();
+let onBoardLed = ffi('int get_led_gpio_pin()')();
 
 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(1000 /* 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(0, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
   let topic = '/devices/' + Cfg.get('device.id') + '/events';
@@ -27,16 +21,12 @@ GPIO.set_button_handler(0, GPIO.PULL_UP, GPIO.INT_EDGE_NEG, 200, function() {
   print('Published:', ok ? 'yes' : 'no', 'topic:', topic, 'message:', message);
 }, null);
 
-function initNeopixel() {
-  let pin = 2, numPixels = 20, colorOrder = NeoPixel.GRB;
-  let strip = NeoPixel.create(pin, numPixels, colorOrder);
-  strip.setPixel(0 / pixel /, 12, 34, 56);
-  strip.show();
 
-  strip.clear();
-  strip.setPixel(1 / pixel /, 12, 34, 56);
-  strip.show();
-}
-
-initNeopixel();
+// 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);
+  print(value ? 'Tick' : 'Tock', 'uptime:', Sys.uptime(), getInfo());
+}, null);
diff --git a/fs/lights.cfg b/fs/lights.cfg
new file mode 100755
index 0000000..e4406c6
--- /dev/null
+++ b/fs/lights.cfg
@@ -0,0 +1,18 @@
+{
+    "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" }
+    ]
+}
\ No newline at end of file