Need Help with IR Remote Model Project

Other Hardware Sensors
1

Hello everyone,

I hope you're doing well. I'm currently working on a school project involving an IR remote model and need some assistance.
The project aims to create a model IR remote control with four buttons, each programmed to send a different IR code when pressed.

I have successfully set up the hardware and written the code for the project. However, I am facing an issue with the transmission of IR codes. Despite my efforts, I have been unable to resolve this issue.

Thank you in advance for your time and support.

Screenshot 2024-05-15 at 11.29.29
Screenshot 2024-05-15 at 11.29.291246×1014 137 KB

2

so it works then

so it does not work then?

which is it?

➜ do yourself a favour and please read How to get the best out of this forum and post accordingly (including your code with code tags and necessary documentation for your ask like your exact circuit and power supply, links to components etc).

3

I mean the code is working well except the part of sending ir code, does not work

4

post the code then (USE code tags please)... how do you think we an help otherwise?

5

Is the assignment to make your own IR transmitter? Why not just use an old TV remote or something where the transmission codes (marks and spaces) are already defined in the library?

6

yes, the assignment is to make the ir transmitter.

7 
//#include<IRremote.hpp>
#include <IRremote.hpp>
const int buttonUP = 4; // Digital pin for button 1
const int buttonDOWN = 5; // Digital pin for button 2
const int buttonLEFT = 6; // Digital pin for button 3
const int buttonRIGHT = 7; // Digital pin for button 4
const int buttonSTOP = 8;// Digital pin for button 5
const int ledPin = 3;    // Digital pin for LED


IRsend irsend;
       // Declare results globally
void setup() {
  pinMode(buttonUP, INPUT_PULLUP);
  pinMode(buttonDOWN, INPUT_PULLUP);
  pinMode(buttonLEFT, INPUT_PULLUP);
  pinMode(buttonRIGHT, INPUT_PULLUP);
  pinMode(buttonSTOP, INPUT_PULLUP); // Corrected the pin mode for buttonSTOP
  pinMode(ledPin, OUTPUT);
  Serial.begin(9600); // Initialize serial communication
     // Enable IR receiver
}

void loop() {
  // Read the state of each button
  int buttonUPState = digitalRead(buttonUP);
  int buttonDOWNState = digitalRead(buttonDOWN);
  int buttonLEFTState = digitalRead(buttonLEFT);
  int buttonRIGHTState = digitalRead(buttonRIGHT);
  int buttonSTOPState = digitalRead(buttonSTOP);
  


  // Send different hexadecimal codes for each button press
  if (buttonUPState == LOW) {
    sendHexCode(0xE0E020DF);
  }
  if (buttonDOWNState == LOW) {
    sendHexCode(0xE0E0A05F);
  }
  if (buttonLEFTState == LOW) {
    sendHexCode(0xE0E0609F);
  }
  if (buttonRIGHTState == LOW) {
    sendHexCode(0xE0E010EF);
  }
  if (buttonSTOPState == LOW) { // Corrected the condition for buttonSTOP
    sendHexCode(0xE0E0906F);
  }
  
  // Turn on the LED if any button is pressed
  if (buttonUPState == LOW || buttonDOWNState == LOW || buttonLEFTState == LOW || buttonRIGHTState == LOW || buttonSTOPState == LOW) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }

}

void sendHexCode(int code) {
  // Print the hexadecimal code
  Serial.print("Sending code: 0x");
  Serial.println(code, HEX);
  
  //Send the hexadecimal code over IR
  irsend.sendNEC(code, 32); // Assuming NEC protocol with 32 bits
 }
8

you are missing the call to IrSender.begin();

see the example Arduino-IRremote/examples/SendDemo/SendDemo.ino at master · Arduino-IRremote/Arduino-IRremote · GitHub

9

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