Circuit explanation:

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.

Code:

//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...