azer

Most recent activity

• function to control an rgb led

  in General • 7 years

  

  Hi. I've already tried lot of tutos found over the net. But there is a lot of them for official espruino boards so it doesn't works on mine. I'm not a big pro developper but i have lots of boards programed by myself. But i never had to use rgb leds with this board.

  I've just tried to control my led using an Arduino Uno. It works very well. So while looking for fading on esp, i found that esp can't use hard pwm. That's why all my test codes doesn't works as expected.

  I have found a soft pwm fonction to do the same work. I'll try it.

  https://www.espruino.com/Software+PWM

  Thank you for all helps @Gordon

• function to control an rgb led

  @azer started

  • 14 comments
  • 5,247 views

  @azer replied
• function to control an rgb led

  in General • 7 years

  

  hello,

  I've just make corrections suggested. It's working. But the colors jumps from color to another one. How can I make a fading animation between colors ?

  // variables to set
  var wifiSSID = "xxxx";
  var wifiPass = "xxxx";
  
  // do not touch after this line
  var LED1 = D5;
  var LED2 = D14;
  var LED3 = D12;
  var button = D4;
  var colFrom = [0,0,0];
  var colTo = [0,0,0];
  var colFade = 0;
  var powerState = "off";
  pinMode(button, 'input_pulldown');
  
  function setLeds() {
    colFade += 0.5;
    if (colFade>=1) {
      colFade = 0;
      colFrom = colTo;
      var c = E.HSBtoRGB(Math.random(),1,1);
      colTo = [ (c&0xFF)/256, ((c>>8)&0xFF)/256, ((c>>16)&0xFF)/256 ];
    }
  
    analogWrite(LED1,colFrom[0]*(1-colFade) + colTo[0]*colFade, {soft:true});
    analogWrite(LED2,colFrom[1]*(1-colFade) + colTo[1]*colFade, {soft:true});
    analogWrite(LED3,colFrom[2]*(1-colFade) + colTo[2]*colFade, {soft:true});
  }
  
  function power(state) {
    if (state === "on") {
      powerState = "on";
      setInterval(setLeds, 500);
    }
    if (state === "off") {
      powerState = "off";
      clearInterval();
      analogWrite(LED1, false);
      analogWrite(LED2, false);
      analogWrite(LED3, false);
    }
  }
  
  function startServer() {
    setWatch(function(){
      if (powerState === "off") {
        power("on");
        powerState = "on";
      } else {
        if (powerState === "on") {
          power("off");
          powerState = "off";
        }
      }
    }, button, {repeat:true, edge:"rising", debounce:50});
  }
  
  function onInit() {
    var wifi = require('Wifi');
    wifi.stopAP();
    wifi.connect(wifiSSID, {password:wifiPass}, function(err, data){
      if (err) {
        print('Error while connecting to access point' + wifiSSID);
        return;
      }
  
      print("connected? err=", err, "info=", wifi.getIP());
      startServer();
    });
  }
  power('off');
  

• function to control an rgb led

  in General • 7 years

  

  Hello,

  I use nodemcu. Ordinary I post in other boards topic. For this I have done a mistake.

  Sorry for that.

• function to control an rgb led

  in General • 7 years

  

  Sorry for the late answer. I can't access to my personal documents from work.
  Here it i the full code:

  // variables to set
  var wifiSSID = "xxxx";
  var wifiPass = "xxxx";
  
  // do not touch after this line
  var LED1 = D5;
  var LED2 = D14;
  var LED3 = D12;
  var button = D4;
  var colFrom = [0,0,0];
  var colTo = [0,0,0];
  var colFade = 0;
  pinMode(button, 'input_pulldown');
  
  function setLeds() {
    colFade += 0.05;
    if (colFade>=1) {
      colFade = 0;
      colFrom = colTo;
      var c = E.HSBtoRGB(Math.random(),1,1);
      colTo = [ (c&0xFF)/256, ((c>>8)&0xFF)/256, ((c>>16)&0xFF)/256 ];
    }
  
    analogWrite(LED1,colFrom[0]*(1-colFade) + colTo[0]*colFade, {soft:true});
    analogWrite(LED2,colFrom[1]*(1-colFade) + colTo[1]*colFade, {soft:true});
    analogWrite(LED3,colFrom[2]*(1-colFade) + colTo[2]*colFade, {soft:true});
  }
  
  function power(state) {
    if (state === "on") {
      powerState = "on";
      setInterval(setLeds, 500);
    }
    if (state === "off") {
      powerState = "off";
      analogWrite(LED1, false);
      analogWrite(LED2, false);
      analogWrite(LED3, false);
    }
  }
  
  function startServer() {
    // start future http server
    var powerState = "off";
    power("off");
    setWatch(function(){
      if (powerState === "off") {
        power("on");
        powerState = "on";
      } else {
        if (powerState === "on") {
          power("off");
          powerState = "off";
        }
      }
    }, button, {repeat:true, edge:"rising", debounce:50});
  }
  
  function onInit() {
    var wifi = require('Wifi');
    wifi.stopAP();
    wifi.connect(wifiSSID, {password:wifiPass}, function(err, data){
      if (err) {
        print('Error while connecting to access point' + wifiSSID);
        return;
      }
  
      print("connected? err=", err, "info=", wifi.getIP());
      startServer();
    });
  }
  
  E.on('init', onInit());
  save();
  

• function to control an rgb led

  in General • 7 years

  

  There is something I missed. When the board starts, the led is off. Good. When I press the button, the led start directly and is not fading. The color jump from one to another one

  function setLeds() {
    colFade += 0.05;
    if (colFade>=1) {
      colFade = 0;
      colFrom = colTo;
      var c = E.HSBtoRGB(Math.random(),1,1);
      colTo = [ (c&0xFF)/256, ((c>>8)&0xFF)/256, ((c>>16)&0xFF)/256 ];
    }
    analogWrite(LED1,colFrom[0]*(1-colFade) + colTo[0]*colFade, {soft:true});
    analogWrite(LED2,colFrom[1]*(1-colFade) + colTo[1]*colFade, {soft:true});
    analogWrite(LED3,colFrom[2]*(1-colFade) + colTo[2]*colFade, {soft:true});
  }
  

• function to control an rgb led

  in General • 7 years

  

  it's working but is it possible to fade from 0 (black) to randoms colours automatically ?
  Exemple:

  • Push button --> start led sequence from 0, 0, 0 (R, G, B)
    
  • calculate new random values for each led
    
  • fade from 0, 0, 0 to new values a, b, c
    
  • When fade done, calculate new random values
    
  • fade from a, b, c to new values d, e, f
    
    

  I have a big logical problem for that. I presume that it is not so difficult but I can't really understand how it works !

• function to control an rgb led

  in General • 7 years

  

  wow, i'll test this asap :)

• function to control an rgb led

  in General • 7 years

  

  Hi, forgive me for my bad english.

  I'm trying to control a simple RGB led. My actual code is working, but I'd make it more ... fluid:

  function fade(led) {
    for (i=0; i<=255; i++) {
      digitalWrite(led, i);
    }
  }
  

  I call this funtion with the pin number of the led to control. But I'd like an async function that can run a "sequence" of colours while checking in the same time the state of a push button (to turn on/off).

  I'm really not a developper, but I know that someone could help me to finish my little led lamp project for my daughter :)

• can't get xmlhttprequest working on nodemcu

  @azer started

  • 2 comments
  • 1,817 views

  @azer replied