ESP8266 Community Forum

- Thu Apr 05, 2018 2:17 am #75152 Just guessing: Your router firewall blocking port 80?

- Thu Apr 05, 2018 6:02 am #75159 Hi, I have been using this for a while and i works perfectly. I can tell siri to change the lights without having to reach for a remote and point it a t the controller. . I have the NodeMCU powered by my iMac as I don't have a voltage regulator yet. I am just curious about the TIP122 as they get quite hot when in use. It depends which colour I have the lights on. I have a simple diagram of my connections below, I'll also include my code. I would appreciate it if anyone could tell me if this is normal or if I have a problem. Thanks.

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

#include <ESP8266WiFi.h>

#define redPin 13 //D7 - Red channel
#define grnPin 12 //D6 - Green channel
#define bluPin 14 //D5 - Blue channel

#define max(a,b) ((a)>(b)?(a):(b))

WiFiServer server(80); //Set server port

String readString;           //String to hold incoming request
String hexString = "000000"; //Define inititial color here (hex value), 080100 would be a calm warmtone i.e.

int state;

int r;
int g;
int b;

float R;
float G;
float B;

int x;
int V;

///// WiFi SETTINGS - Replace with your values /////////////////
const char* ssid = "xxx";
const char* password = "xxx";
IPAddress ip(x,x,x,x);      // set a fixed IP for the NodeMCU
IPAddress gateway(x,x,x,x);  // Your router IP
IPAddress subnet(255,255,255,0); // Subnet mask
////////////////////////////////////////////////////////////////////

void WiFiStart() {
  Serial.print("Connecting to ");
  Serial.println(ssid);
  WiFi.begin(ssid, password);
  WiFi.config(ip, gateway, subnet); //Set a fixed IP. You can comment this out and set it in your router instead.
  while (WiFi.status() != WL_CONNECTED) {
    delay(100);
    Serial.print("_");
  }
  Serial.println();
  Serial.println("Done");
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  Serial.println("");

  server.begin();                   
}

void allOff() {
  state = 0;
  analogWrite(redPin, 0);
  analogWrite(grnPin, 0);
  analogWrite(bluPin, 0);
}

//Write requested hex-color to the pins (10bit pwm)
void setHex() {
  state = 1;
  long number = (long) strtol( &hexString[0], NULL, 16);
  r = number >> 16;
  g = number >> 8 & 0xFF;
  b = number & 0xFF;
  r = map(r, 0, 255, 0, 1023);  //added for 10bit pwm
  g = map(g, 0, 255, 0, 1023);  //added for 10bit pwm
  b = map(b, 0, 255, 0, 1023);  //added for 10bit pwm
  analogWrite(redPin, (r));
  analogWrite(grnPin, (g));
  analogWrite(bluPin, (b));
}

//Compute current brightness value
void getV() {
  R = roundf(r/10.23);  //for 10bit pwm, was (r/2.55);
  G = roundf(g/10.23);  //for 10bit pwm, was (g/2.55);
  B = roundf(b/10.23);  //for 10bit pwm, was (b/2.55);
  x = max(R,G);
  V = max(x, B);
}

//For serial debugging only
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.println("");
}

void setup(){
  Serial.begin(9600);
  delay(1);
  pinMode(redPin, OUTPUT);  //declaration added
  pinMode(grnPin, OUTPUT);  //declaration added
  pinMode(bluPin, OUTPUT);  //declaration added
  setHex(); //Set initial color after booting. Value defined above
  WiFi.mode(WIFI_STA);
  WiFiStart();
  //showValues(); //Uncomment for serial output
}

void loop() {
  //Reconnect on lost WiFi connection (superfluous - will reconnect anyway)
  /*if (WiFi.status() != WL_CONNECTED) {
    WiFiStart();
  }
  */ 

  WiFiClient client = server.available();
 
  if (!client) {
    return;
  }
 
  while(client.connected() && !client.available()) {
    delay(1);
  }
   
  //Respond on certain Homebridge HTTP requests
  if (client) {
    while (client.connected()) {
      if (client.available()) {
        char c = client.read();
        if (readString.length() < 100) {
          readString += c;
        }
        if (c == '\n') {
          //Serial.print("Request: "); //Uncomment for serial output
          //Serial.println(readString); //Uncomment for serial output
         
          //Send reponse
          client.println("HTTP/1.1 200 OK");
          client.println("Content-Type: text/html");
          client.println();
         
          //On
          if(readString.indexOf("on") >0) {
            setHex();
            //showValues();
          }
     
          //Off
          if(readString.indexOf("off") >0) {
            allOff();
            //showValues();
          }

          //Set color
          if(readString.indexOf("set") >0) {
            hexString = "";
            hexString = (readString.substring(9,15));
            setHex();
            //showValues();
          }
         
          //Status on/off
          if(readString.indexOf("status") >0) {
          client.println(state);
          }

          //Status color (hex)
          if(readString.indexOf("color") >0) {
          client.println(hexString);
          }

          //Status brightness (%)
          if(readString.indexOf("bright") >0) {
          getV();
          client.println(V);
          }
         
          delay(1);
          client.stop();
          readString="";
        }
      }
    }
  }
}

- Fri Apr 06, 2018 2:04 am #75179 Hmm, I think the wiring should not make a difference. Maybe someone else would join in to confirm this.
My TIP122s are warming up when in use but 'quite hot' sounds strange. Your 12V Power Adapter deliveres enough ampere to safely power the whole strip?

- Sat Apr 07, 2018 6:39 pm #75203 I think that my power supply has enough amperage as it provides 2 amps and worked with without getting warm with the ir controller that originally came with my strip. The transistors get more hot depending on what colour they are on. For example if they are on red the red transistor would get hot.