diff --git a/fs/init.js b/fs/init.js
index 520ae9a..7943b06 100644
--- a/fs/init.js
+++ b/fs/init.js
@@ -20,7 +20,8 @@ print('LED GPIO:', onBoardLed, 'button GPIO:', button);
 let getInfo = function() {
   return JSON.stringify({
     total_ram: Sys.total_ram(),
-    free_ram: Sys.free_ram()
+    free_ram: Sys.free_ram(),
+    uptime: Sys.uptime()
   });
 };
 
@@ -54,7 +55,7 @@ Net.setStatusEventHandler(function(ev, arg) {
   } else if (ev === Net.STATUS_GOT_IP) {
     evs = 'GOT_IP';
   }
-  print('== Net event:', ev, evs);
+  print('==> NET:', ev, evs);
 }, null);
 
 // Initialize LED controller
@@ -89,6 +90,7 @@ let animationFile = Cfg.get('led.animationFile');
 let lampsFile = Cfg.get('led.lampsFile');
 let useDefaults = Cfg.get('led.useDefaults');
 let updateCycle = Cfg.get('led.updateCycle');
+let tickDuration = Cfg.get('led.tickDuration');
 let brightnessAdjustment = Cfg.get('led.brightness');
 let numberOfLeds = 0; // from config files, count led definition entries
 
@@ -98,12 +100,12 @@ function createLedTestPattern() {
   let switchMod;
   for (i=0; i<numPixels; ++i) {
     switchMod = i - 6 * Math.floor(i/6);
-    if (switchMod === 0) strip.setPixel(i, 100, 100, 100);
-    if (switchMod === 1) strip.setPixel(i, 100, 100, 100);
-    if (switchMod === 2) strip.setPixel(i, 100, 100, 0);
-    if (switchMod === 3) strip.setPixel(i, 0, 100, 0);
-    if (switchMod === 4) strip.setPixel(i, 0, 100, 100);
-    if (switchMod === 5) strip.setPixel(i, 0, 0, 100);
+    if (switchMod === 0) strip.setPixel(i, 10, 10, 10);
+    if (switchMod === 1) strip.setPixel(i, 10, 10, 10);
+    if (switchMod === 2) strip.setPixel(i, 10, 100, 0);
+    if (switchMod === 3) strip.setPixel(i, 0, 10, 0);
+    if (switchMod === 4) strip.setPixel(i, 0, 10, 10);
+    if (switchMod === 5) strip.setPixel(i, 0, 0, 10);
     if (switchMod < 0 || switchMod > 5) print("WRONG -- should never reach this in switch statement!");
   }
   strip.show();
@@ -112,7 +114,7 @@ function createLedTestPattern() {
 function allLedOn() {
   let i;
   for (i=0; i<numPixels; ++i) {
-    strip.setPixel(i, 100, 100, 100);
+    strip.setPixel(i, 10, 10, 10);
   }
   strip.show();
 }
@@ -127,6 +129,8 @@ function adjustBrightness(value) {
 }
 
 // initialize LEDs
+// ===============
+print('***** Start initialization', getInfo());
 let i;
 allLedOff();
 
@@ -155,7 +159,7 @@ if (useDefaults) {
   // Load LED Definitions
   let json = File.read(lampsFile);
   let ledDef = [];
-  print('ledDefFile =', json);
+  print('lampsFile =', json);
   if (json === '') {
     print('ERROR: LED definition file does not exist!');
   } else {
@@ -173,7 +177,7 @@ if (useDefaults) {
   // Load Animation Definitions
   let json = File.read(animationFile);
   let animation = [];
-  print('ledDefFile =', json);
+  print('animationFile =', json);
   if (json === '') {
     print('ERROR: Animation definition file does not exist!');
   } else {
@@ -188,14 +192,14 @@ if (useDefaults) {
   // Initialize LED State Engine
   LEDStateEngine_init(numberOfLeds);
 }
-
+print('***** End of initialization', getInfo());
 print('_______________________________________________________');
-print('End of initialization:');
 print('LedPin:', pin);
 print('NumLEDs:', numberOfLeds);
 print('Ticks:', getTicks());
-print('Brightness:', brightnessAdjustment, '%');
+print('Tick duration:', tickDuration, 'ms');
 print('LED Update Cycle:', updateCycle, 'ms');
+print('Brightness:', brightnessAdjustment, '%');
 print('LED', 'Color', 'R', 'G', 'B', 'Tick', 'Level', 'Room', 'Id');
 print('---', '-----', '---', '---', '-----', '---', '-----', '----', '--');
 for (i=0; i<numberOfLeds; ++i) {
@@ -204,11 +208,13 @@ for (i=0; i<numberOfLeds; ++i) {
 }
 
 allLedOn();
+print('***** Wait 1 second for other tasks to startup', getInfo());
 Timer.set(1000, false, function() {
   allLedOff();
-  Timer.set(1000 /* 0,5 sec */, false /* repeat */, function() {
+  print('***** LED test pattern', getInfo());
+  Timer.set(1000, false, function() {
     createLedTestPattern();
-    print('Created LED test pattern, uptime:', Sys.uptime(), getInfo());
+    print('***** Start LED state engine and LED-update timer', getInfo());
     LEDStateEngine_start();
     Timer.set(updateCycle, true, function () {
       let i;
@@ -219,19 +225,10 @@ Timer.set(1000, false, function() {
     }, null);
   }, null);
 }, null);
+print('***** End of init.js, sub tasks still running', getInfo());
 
 
-/*
-Timer.set(30000, true, function () {
-  let i;
-  print('Ticks:', getTicks());
-  print('LED', 'Tick', 'Next');
-  print('---', '-----', '----');
-  for (i=0; i<numPixels; ++i) {
-    print(i, LEDState_getCurrentTick(i), LEDState_getNextTick(i));
-  }
-}, null);
-*/
+/* ------ RPC Handlers ------- */
 
 RPC.addHandler('led.setBrightness', function(args) {
   // print(args);
@@ -280,3 +277,43 @@ function saveFile(filename, content) {
   File.write(JSON.stringify(content), filename);
   let backupFilename = null;
 }
+
+function recoverFile(filename) {
+  let newerFilename = 'new-' + filename;
+  let backupFilename = 'bak-' + filename;
+  let bakFileContent = File.read(backupFilename);
+  if (bakFileContent === '') {
+    Log.error('recoverFile(' + filename + '): Backup file ' + backupFilename + ' does not exist or is empty');
+    return;
+  }
+  File.remove(newerFilename);
+  File.rename(filename, newerFilename);
+  File.rename(backupFilename, filename);
+}
+
+RPC.addHandler('led.putColors', function(args) {
+  if (args !== undefined && args.colors !== undefined) {
+    saveFile(colorFile, args.colors);
+    return { result: 'ok' };
+  } else {
+    return { error: 'colors: {name, red, green, blue} is required' };
+  }
+}, null);
+
+RPC.addHandler('led.putLamps', function(args) {
+  if (args !== undefined && args.lamps !== undefined) {
+    saveFile(lampsFile, args.lamps);
+    return { result: 'ok' };
+  } else {
+    return { error: 'lamps: {level, room, id, onColor} is required' };
+  }
+}, null);
+
+RPC.addHandler('led.putAnimations', function(args) {
+  if (args !== undefined && args.animations !== undefined) {
+    saveFile(animationFile, args.animations);
+    return { result: 'ok' };
+  } else {
+    return { error: 'animations: {led, mode, ticks} is required' };
+  }
+}, null);
diff --git a/mos.yml b/mos.yml
index cb7a727..cfc7c0d 100644
--- a/mos.yml
+++ b/mos.yml
@@ -34,7 +34,8 @@ config_schema:
   - ["led.pin", "i", 2, {title: "Pin for data to WS2812 based LED chain"}]
   - ["led.useDefaults", "b", false, {title: "Use default values for colors, led-definitions, animations"}]
   - ["led.count", "i", 32, {title: "Number of LEDs connected in the chain"}]
-  - ["led.updateCycle", "i", 500, {title: "Frequency of LED update in ms"}]
+  - ["led.updateCycle", "i", 100, {title: "Frequency of LED update in ms"}]
+  - ["led.tickDuration", "i", 100, {title: "Timebase: Duration of a tick in ms"}]
   - ["led.brightness", "i", 20, {title: "Default brightness in % (1-100)"}]
   - ["led.colorFile", "s", "colors.cfg", {title: "File name containing color definitions"}]
   - ["led.lampsFile", "s", "lamps.cfg", {title: "File name containing lamp definitions"}]
diff --git a/src/main.c b/src/main.c
index 800eb46..02bf182 100644
--- a/src/main.c
+++ b/src/main.c
@@ -48,7 +48,7 @@ static void stateEngineTickTimer() {
 
 static void delayed_boot() {
 	LOG(LL_INFO, ("*** Start timer for LED state engine ticks"));
-	mgos_set_timer(100, true, stateEngineTickTimer, NULL); // every 0.1 second call timer_cb
+	mgos_set_timer(mgos_sys_config_get_led_tickDuration(), true, stateEngineTickTimer, NULL); // every 0.1 second call timer_cb
 }
 
 enum mgos_app_init_result mgos_app_init(void) {