ESP8266 Community Forum

- Thu Oct 18, 2018 2:28 am #78696 Ok, seems like at least the better-http-rgb plugin has been updated. The structure of the plist file is documented in the plugin's readme.
For my old setup I haven't had to change anything to have it still working fine, I'm on iOS 12 now.

Last edited by eqsOne on Tue Oct 23, 2018 4:09 am, edited 1 time in total.

- Sat Oct 20, 2018 1:04 am #78756 Please help me, how can i control a individual addressable LED strip like this? (Model WS2812b)

- Sun Oct 21, 2018 4:04 am #78772 I think it wouln't make much sense as HomeKit is not prepared to switch to any fancy rainbow color schemes. The fastLED Library has a hex-color command (leds[] = 0x080600;) to work with and the wiring needs to be different of cause. It should be possible but doesn't really worth the effort if you ask me.

- Tue Oct 23, 2018 3:48 am #78817 Here's my attempt of including a color fade. Found a nice crossfade solution over here at arduino.cc, which I altered to be nonblocking. Otherwise the ESP got unresponsive at times while fading lights and handle homebridge conversations at the same time. Not too much tested yet, but seems promising so far:

Code: Select all//NodeMCU RGB-Controller for Homebridge & HomeKit (Siri) with nonblocking color fade

#include <ESP8266WiFi.h>

#define redPin 13 //D7
#define grnPin 12 //D6
#define bluPin 14 //D5

#define max(a,b) ((a)>(b)?(a):(b))  //added to make max() work with different data types (int | float)

WiFiServer server(80);

String readString;
String hexString = "080100"; //Define initial color here, i.e.: (hex 080100 == RGB 8.1.0) | (hex FFFFFF == RGB 255.255.255) | ...
String offString = "000000";

int state;

int r, g, b, x, V;

float R, G, B;

//Color fade variables
int dltR, dltG, dltB;
int curR, curG, curB, i = 0;
int prvR = curR;
int prvG = curG;
int prvB = curB;

//Fade timer variables
unsigned long fdeTimer;       
unsigned long fdeDelay = 1UL;

// WiFi SETTINGS - Replace with your values:
const char* ssid = "YOUR_ROUTER_SSID";
const char* password = "YOUR_ROUTER_PASSWORD";
IPAddress ip(192, 168, 1, 10);   //set a fixed IP for the NodeMCU - comment if you prefer to set it in your router instead.
IPAddress gateway(192, 168, 1, 1); //Your router IP - comment if you prefer to set it in your router instead.
IPAddress subnet(255, 255, 255, 0); //Subnet mask - comment if you prefer to set it in your router instead.

void WiFiStart() {
  WiFi.begin(ssid, password);
  WiFi.config(ip, gateway, subnet); //Sets your fixed IP - comment if you prefer to set it in your router instead.
  while (WiFi.status() != WL_CONNECTED) delay(100);
  server.begin();
  //Serial.print(WiFi.macAddress());  //Uncomment to print the ESP's MAC-address
  //Serial.print(" | ");              //
  //Serial.println(WiFi.localIP());   //Uncomment to print the ESP's actual IP-address
}

void allOff() {
  //Transform hex-color from 'offString' into rgb-color for the LED-Strip:
  long number = (long) strtol(&offString[0], NULL, 16);
  r = number >> 16;
  g = number >> 8 & 0xFF;
  b = number & 0xFF;
  setLED(r, g, b);
  state = 0;
}

void setHex() {
  //Transform requested hex-color from HomeKit ('hexString') into rgb-color for the LED-Strip:
  long number = (long) strtol(&hexString[0], NULL, 16);
  r = number >> 16;
  g = number >> 8 & 0xFF;
  b = number & 0xFF;
  setLED(r, g, b);
  state = 1;
}

//Handle color values before fade, then set the fade timer:
void setLED(int r, int g, int b) {
  dltR = calcStep(prvR, r);
  dltG = calcStep(prvG, g);
  dltB = calcStep(prvB, b);
  fdeTimer = millis();
  prvR = curR;
  prvG = curG;
  prvB = curB;
}

int calcStep(int prvVal, int endVal) {
  int step = endVal - prvVal;
  if (step) step = 1027/step; //in relation with 'fdeTimer' in loop()
  return step;
}

int calcVal(int step, int val, int i) {
  if ((step) && i % step == 0) {
    if (step > 0) val += 1;
    else if (step < 0) val -= 1;
  }
  if (val > 255) val = 255;
  else if (val < 0) val = 0;
  return val;
}

//get actual brightness in %
void getV() {
  R = roundf(r/2.55);
  G = roundf(g/2.55);
  B = roundf(b/2.55);
  x = max(R, G);
  V = max(x, B);
}

//Debug
void showValues() {
  Serial.print("Status on/off: ");
  Serial.println(state);
  Serial.print("RGB color: ");
  Serial.print(r);
  Serial.print(".");
  Serial.print(g);
  Serial.print(".");
  Serial.println(b);
  Serial.print("Hex color: ");
  Serial.println(hexString);
  getV();
  Serial.print("Brightness: ");
  Serial.println(V);
  Serial.print("Current RGB: ");
  Serial.print(curR);
  Serial.print(".");
  Serial.print(curG);
  Serial.print(".");
  Serial.print(curB);
  Serial.println(". (should match 'RGB color')");
  Serial.println();
}

void setup() {
  Serial.begin(115200);
  pinMode(redPin, OUTPUT);    //declaration added (though actually not needed with 'analogWrite'?!)
  pinMode(grnPin, OUTPUT);
  pinMode(bluPin, OUTPUT);
  WiFi.hostname("LED-Light"); //Rename your ESP for better assignment within your router's clients list
  WiFi.mode(WIFI_STA);
  WiFiStart();
  setHex();
}

void loop() {
  //if fade-timer is set and expired, fade to new color:
  if (fdeTimer > 0 && millis() - fdeTimer >= fdeDelay) {
    fdeTimer = millis();
    curR = calcVal(dltR, curR, i);
    curG = calcVal(dltG, curG, i);
    curB = calcVal(dltB, curB, i);
    analogWrite(redPin, map(curR, 0, 255, 0, 1023));
    analogWrite(grnPin, map(curG, 0, 255, 0, 1023));
    analogWrite(bluPin, map(curB, 0, 255, 0, 1023));
    prvR = curR;
    prvG = curG;
    prvB = curB;
    if (++i > 1023) { //in relation with 'step' in calcStep()
      i = 0;
      fdeTimer = 0;
    }
  }
  //Handle Homebridge HTTP requests:
  WiFiClient client = server.available();
  if (!client) return;
  while (client.connected() && !client.available()) delay(1);
  if (client) {
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        if (readString.length() < 100) {
          readString += c;
        }
        if (c == '\n') {
          //Serial.print("Received: "); //uncomment for serial debugging
          //Serial.println(readString); //uncomment for serial debugging
          //Send response:
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
          //ON:
          if(readString.indexOf("on") >0) {
            setHex();
          }
          //OFF:
          if(readString.indexOf("off") >0) {
            allOff();
          }
          //Set Hex-Color:
          if(readString.indexOf("set") >0) {
            hexString = "";
            hexString = (readString.substring(9,15));
            setHex();
          }
          //ON/OFF state:
          if(readString.indexOf("status") >0) {
            client.println(state);
          }
          //Color state (hex):
          if(readString.indexOf("color") >0) {
            client.println(hexString);
          }
          //Brightness state (%):
          if(readString.indexOf("bright") >0) {
            getV();
            client.println(V);
          }
          delay(1);
          while (client.read() >= 0);  //added: clear remaining buffer to prevent ECONNRESET
          client.stop();
          //showValues();              //uncomment for serial debugging
          readString.remove(0);        //reset readString
        }
      }
    }
  }
}