Published February 11, 2019

Making Smart LED Strip From Boring IR Controller LED Strip

I tried to convert IR remote controlled RGB LED strip in to smart LED strip. Hard ware used ESP01.

IntermediateWork in progress8 hours7,313

Making Smart LED Strip From Boring IR Controller LED Strip

Things used in this project

Hardware components

Espressif ESP8266 ESP-01

PC817

Solderless Breadboard Half Size

Jumper wires (generic)

Software apps and online services

Arduino IDE

Story

Hello makers,

I purchased RGB LED strip for my house which is IR remote controller based. as I like smart devices I decided to covert this IR controller in-to Smart RGB LED strip using ESP01 micro controller whic gives me WIFI connectivity.I also wanted to integrate that RGB led strip with my Home automation server (OPENHAB) so ESP is best & cheap solution.

first of all I have checked RGB controller and check all function which is provided by its manufacturer.

Checking of IR controller

After checking general function I opened it controller for checking what control and power switching devices are used inside. as there are few components are used my work for reverse engineering become easy. all component are shown in below pic.

General layout of components

I started reverse engineer that controller and I made simple schematic of it as shown below. there are only few components are used. Circuit operates on 12 VDC. Zenar regulator is used to convert 12 VDC in to 4.8 VDC which is further connected with IR receiver and Micro controller. Pin 4 of controller is used as input for IR reciever signal checking. PIn 5, 6 & 7 are used to operate MOSFET(A2SHB) which is "N"Channel Mosfet. Source pins of mosfets are connected to ground and Drain pin are connected directly to output connector. 12 VDC from main incomer is connected to 1st pin of output. & RC1, RC2 & RC3 is current limiting resistors which are installed on LED strip itself.

Schematic of old controller

After reverse engineer it I make new schematic in which I try to used ESP01 controller as main controller. initially I decided to connect GPIO 1, 2 & 3 of ESP01 to gate of mosfet.

Schematic with ESP01

in my final setup I decided to install optocoupler between Gate of mosfet and GPIO of micro controller to protect micro controller pins and its schematic is as below.

finally I have write small program using arduino IDE and uploaded in ESP. and started trial of system. in my trial ESP act as AP and hosted on webpage having three field.

Red, Green & Blue in which we can input brightness in 0 to 100 %. & it works fine.

Althow I faced plenty of problem with ESP01 as there are limited PIN and available pins are also multipurpose pins & used by ESP for internal tasks. so if you want to do same kind of project r recommend to use ESP12.

finally I am planning to replace ESP01 with ESP12F and connect it with MY OPENHAB server for final control.

Code

Smart LED strip Trial Code

#include <ESP8266WiFi.h>
#include <WiFiClient.h> 
#include <ESP8266WebServer.h>

//WIFI AP Definetion
const char *myssid = "Smart_LED_Strip";
const char *password = "XXXXXXX"; //Put your prefered password
IPAddress ip(192,168,11,4);
IPAddress gateway(192,168,11,1);
IPAddress subnet(255,255,255,0);

//WIFI Client definetion Not necessary for this project
const char *ssid = "XXXXXXX"; //Wifie router IP "i used this for MQTT server connecterion which will used in future
IPAddress station_ip;

//Webserver
ESP8266WebServer server(80);

//RGB calculation variables
int Rbri,Gbri,Bbri,Totalbri,Robri,Gobri,Bobri;

//Pin defination
int Rled = 1;
int Gled = 3;
int Bled = 2;

void setup() {    
//Pin setup
  pinMode(Rled,OUTPUT);
  pinMode(Gled,OUTPUT);
  pinMode(Bled,OUTPUT);
  WiFi.mode(WIFI_AP_STA); 
  server.on("/", handleRoot);
  server.begin();
//not advise to use if GPIO 1 & 3 is used as Output as it will conflict with RX TX functionality.  
  /*
  Serial.println("");
  Serial.print("Connected to ");
  Serial.println(ssid);
  Serial.print("IP address: ");
  Serial.println(WiFi.localIP());
  */
//Initialised WIFI AP  
  WiFi.softAPConfig(ip, gateway, subnet);
  WiFi.softAP(myssid, password);
  station_ip = WiFi.localIP();
}
void loop() {
   server.handleClient();
   int rpwm = map(Robri,0,100,0,1024);
   int gpwm = map(Gobri,0,100,0,1024);
   int bpwm = map(Bobri,0,100,0,1024);
   analogWrite(Rled,rpwm);
   analogWrite(Gled,gpwm);
   analogWrite(Bled,bpwm);
   
//not advise to use if GPIO 1 & 3 is used as Output as it will conflict with RX TX functionality.  
  /*
   Serial.print("R led pwm- ");Serial.println(rpwm);
   Serial.print("G led pwm- ");Serial.println(gpwm);
   Serial.print("B led pwm- ");Serial.println(bpwm);
   */
}

// Wepage 
void handleRoot() {
int on_time,off_time;
   char temp[1500];
   snprintf ( temp, 1000,
"<html>\
  <head>\
    <title>Techno Automation</title>\
    <style>\
      body { background-color: #cccccc; font-family: Arial, Helvetica, Sans-Serif; Color: #000088; }\
            .button {background-color: #990033; border: none; color: white; padding: 7px 15px;text-align: center; cursor: pointer;}\
    </style>\
  </head>\
  <body>\
    <h1>Smart LED Strip controller</h1>\
    <p>AP IP address = %02d.%02d.%02d.%02d</p>\
    <p>Station IP address = %02d.%02d.%02d.%02d</p>\
    <p>R:G:B:Bri= %02d:%02d:%02d:%02d:</p>\
    <form action='http://192.168.11.4' method='POST'>\
    Red: <input type='text' name='Red'>Percentage\<br>\
    Green: <input type='text' name='Green'>Percentage\<br>\
    Blue: <input type='text' name='Blue'>Percentage\<br>\
    Brightness: <input type='text' name='Brightness'>Percentage\<br>\
    <input type='submit' class = button value='Submit'>\<br>\  
    Refresh Page After Submit setting\<br>\
  </form>\
  </body>\
</html>",
    station_ip[0],station_ip[1],station_ip[2],station_ip[3],ip[0],ip[1],ip[2],ip[3],Rbri,Gbri,Bbri,Totalbri
   );
server.send(200, "text/html", temp);

//Sending Webpage submitted value to calculation.
Get_String(String(server.arg("Red")),String(server.arg("Green")),String(server.arg("Blue")),String(server.arg("Brightness")));
}
//In Below function all calculationis carried out.
void Get_String(String R,String G,String B,String Bri){
    int a,b,c,d;
    a = R.toInt();
    b = G.toInt();
    c = B.toInt();
    d = Bri.toInt();
    //Serial.print(a);Serial.print(",");    Serial.print(b);Serial.print(",");    Serial.print(c);Serial.print(",");    Serial.println(d);
    if(d>0) Totalbri = constrain(d,0,100);
    if(a>0) Rbri = constrain(a,0,100); 
    if(b>0) Gbri = constrain(b,0,100);
    if(c>0) Bbri = constrain(c,0,100);
        /*
        Serial.print("R:- ");
        Serial.println(Rbri);
        Serial.print("G:- ");
        Serial.println(Gbri);
        Serial.print("B:- ");
        Serial.println(Bbri);
        Serial.print("Brightness:- ");
        Serial.println(Totalbri)
        ;
        */
    Robri = Rbri*Totalbri/100;
    Gobri = Gbri*Totalbri/100;
    Bobri = Bbri*Totalbri/100;
        /*
        Serial.print("Ro:- ");
        Serial.println(Robri);
        Serial.print("Go:- ");
        Serial.println(Gobri);
        Serial.print("Bo:- ");
        Serial.println(Bobri);
        Serial.print("Brightness:- ");
        Serial.println(Totalbri);
        */    
}

Making Smart LED Strip From Boring IR Controller LED Strip

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Final Schematic

Code

Smart LED strip Trial Code

Credits

ashish_8284

Comments

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Making Smart LED Strip From Boring IR Controller LED Strip

Making Smart LED Strip From Boring IR Controller LED Strip

Things used in this project

Hardware components

Software apps and online services

Story

Schematics

Final Schematic

Code

Smart LED strip Trial Code

Credits

ashish_8284

Comments

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