Arduino Based Universal TV Remote.

Hello guys, today in this tutorial we will learn, how to make a Universal Tv (IR) Remote. Though this we can control appliances that have IR receiver. Any of IR remote control device can be controlled using this. Suppose you have a Tv, if someone is watching and you don’t have control over remote. But you want to change channel in this condition you can use this remote.

This condition is quite popular in Indian homes in our time. Or you can just learn, how to make your own one Universal all in one remote control. In last we will make a working pcb and order it from our sponsor JLCPCB.

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soldering iron

soldering wire

other soldering accessories

wires and wire cutters

breadboard and Arduino

1) Made using Arduino (programmable).

2) Can be used with any appliances (TV/ Ac/ home theater/ radio/ Home automation).

3) Have 11 buttons for different actions to be performed.

4) Small size

5) Rechargeable

6) DIY project

To make a universal remote, first we should know some important concepts of Infrared remote and receiver. let's understand this with a simple example.

Example:

To change a channel in Tv, IR remote will transmit a code and this code is received by TV then decoded by TV’s microcontroller and processed / channel got changed. So, to make our one we have to first know the code that is transmitted by remote. This process is called decoding, we have to make our own remote decoding system. Then we write down all the decoded values of buttons like, CH+, CH-, VOL+, VOL-, POWER, Settings.

We will feed these values in our Arduino control universal remote and complete this project.

1) How to decode IR Remote using Arduino.

2) How to make a remote-control electric board.

Before going deep in this lecture, please complete these 2 tutorials so that terms like- (Decoding, IR receiver and transmitting, etc.) be more cleared to you.

1) Arduino

2) IR led

3) Tactile buttons

4) 1k resistor x11

5) 220 ohms resistor

6) PCB and wires

7) Battery (3.7v)

Making this circuit with Arduino is very simple, but if you are using Arduino’s Atmega328p chip then, you have to make general connection for clock and reset as shown in circuit diagram. Also, the ICSP (programming serial pins) are given in the schematics to upload the sketch/ change the control signals.

IR led positive terminal is connected with D3(digital pin 3) using 1k/220 ohms resistor and negative terminal is grounded. 11 Tactile switch buttons are used in this project for 11 different instructions to be processed. Each one is connected to different digital pins from D2 to D13. One terminal of each is connected with ground with 1k resistor. 2 pin headers is to supply power to the circuit and Arduino.

//sagar saini : hackster saini_sagar_7294 follow us on instagram, hackaday profile link:https://hackaday.io/project/182316-arduino-based-ir-remote-decoder
//
//Universal IR Remote Controller

#include <IRremote.h>
#include "LowPower.h"

IRsend irsend;

const int b1  = 2;
const int b2  = 4;
const int b3  = 5;
const int b4  = 6;
const int b5  = 7;
const int b6  = 8;
const int b7  = 9;
const int b8  = 10;
const int b9  = 11;
const int b10 = 12;

int timer;
int modeCounter = 0;

void wakeUp() {
  timer = 0;
}

void setup() {
  pinMode(b1, INPUT);
  pinMode(b2, INPUT);
  pinMode(b3, INPUT);
  pinMode(b4, INPUT);
  pinMode(b5, INPUT);
  pinMode(b6, INPUT);
  pinMode(b7, INPUT);
  pinMode(b8, INPUT);
  pinMode(b9, INPUT);
  pinMode(b10, INPUT);
}

void loop() {
  attachInterrupt(0, wakeUp, HIGH);
  while (timer < 10000) {
    if (digitalRead(b1) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }

    if (digitalRead(b2) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }

    if (digitalRead(b3) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }

    if (digitalRead(b4) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }

    if (digitalRead(b5) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }
    
    if (digitalRead(b6) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }
    
    if (digitalRead(b7) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }
    
    if (digitalRead(b8) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }
    
    if (digitalRead(b9) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }
    
    if (digitalRead(b10) == HIGH) {
      timer = 0;
      delay(50);
      irsend.sendNEC(0x0000, 32);     //Enter Remote Hex Value
    }
    delay(1);
    timer = timer + 1;

  }
  
  LowPower.powerDown(SLEEP_FOREVER, ADC_OFF, BOD_OFF);
}

In this code low power library is used to increase the battery life, in this way a single battery withstand up to 3-4 months after a single charge. All the library files are given below.

Download all the important files Code, library, Schematics and Diagrams FROM HERE.

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