My 2 wheeled remote controlled ir receiver and hc sr04 robot was working fine but now its taking code of only firstly pressed button but not subsequen

[divyapat]

my 2 wheeled remote controlled ir receiver and hc sr04 robot was working fine but now its taking code of only firstly pressed button but not subsequent button codes in serial monitor on arduino ide. My code is #include <IRremote.hpp> // Official library (v3.0+)

// Motor Control Pins (L298N)

const uint8_t ENA_PIN = 5;

const uint8_t ENB_PIN = 6;

const uint8_t IN1_PIN = 7;

const uint8_t IN2_PIN = 8;

const uint8_t IN3_PIN = 9;

const uint8_t IN4_PIN = 10;

// HC-SR04 Pins

const uint8_t TRIG_PIN = 12;

const uint8_t ECHO_PIN = 13;

// IR Receiver Pin

const uint8_t IR_RECEIVE_PIN = 11;

// Obstacle Threshold (cm)

const uint16_t OBSTACLE_DISTANCE = 20;

void setup() {

Serial.begin(115200);



// Initialize motor control pins

pinMode(ENA_PIN, OUTPUT);

pinMode(ENB_PIN, OUTPUT);

pinMode(IN1_PIN, OUTPUT);

pinMode(IN2_PIN, OUTPUT);

pinMode(IN3_PIN, OUTPUT);

pinMode(IN4_PIN, OUTPUT);



// Initialize ultrasonic sensor

pinMode(TRIG_PIN, OUTPUT);

pinMode(ECHO_PIN, INPUT);



// Start IR receiver (official library method)

IrReceiver.begin(IR_RECEIVE_PIN, ENABLE_LED_FEEDBACK);



Serial.println(F("Ready to receive IR signals"));

}

void loop() {

// Check for obstacles when moving forward

if (isMovingForward() && checkObstacle()) {

    emergencyStop();

    return;

}



// Handle IR input (official library method)

if (IrReceiver.decode()) {

    handleIRCommand(IrReceiver.decodedIRData.command);

    IrReceiver.resume();  // Enable receiving next value

}

delay(10);

}

// IR Command Handler (using NEC protocol codes)

void handleIRCommand(uint16_t command) {

switch (command) {

    case 0x1B:  // NEC Button 1 (Customize for your remote)

        moveForward();

        break;

    case 0xF:  // NEC Button 2

        moveBackward();

        break;

    case  0xC:  // NEC Button 3

        turnLeft();

        break;

    case 0xE:  // NEC Button 4

        turnRight();

        break;

    case 0xD:  // NEC Button 5 (Stop)

        stopMotors();

        break;

    default:

        Serial.print(F("Unknown command: 0x"));

        Serial.println(command, HEX);

}

}

// Obstacle Detection

bool checkObstacle() {

digitalWrite(TRIG_PIN, LOW);

delayMicroseconds(2);

digitalWrite(TRIG_PIN, HIGH);

delayMicroseconds(10);

digitalWrite(TRIG_PIN, LOW);



uint32_t duration = pulseIn(ECHO_PIN, HIGH);

uint16_t distance = duration \* 0.034 / 2;



if (distance > 0 && distance < OBSTACLE_DISTANCE) {

    Serial.print(F("Obstacle detected: "));

    Serial.print(distance);

    Serial.println(F(" cm"));

    return true;

}

return false;

}

void emergencyStop() {

stopMotors();

delay(500);

moveBackward();

delay(1000);

stopMotors();

}

// Motor Control Functions

void moveForward() {

digitalWrite(IN1_PIN, HIGH);

digitalWrite(IN2_PIN, LOW);

digitalWrite(IN3_PIN, HIGH);

digitalWrite(IN4_PIN, LOW);

analogWrite(ENA_PIN, 200);

analogWrite(ENB_PIN, 200);

Serial.println(F("Moving Forward"));

}

void moveBackward() {

digitalWrite(IN1_PIN, LOW);

digitalWrite(IN2_PIN, HIGH);

digitalWrite(IN3_PIN, LOW);

digitalWrite(IN4_PIN, HIGH);

analogWrite(ENA_PIN, 150);

analogWrite(ENB_PIN, 150);

Serial.println(F("Moving Backward"));

}

void turnLeft() {

digitalWrite(IN1_PIN, LOW);

digitalWrite(IN2_PIN, HIGH);

digitalWrite(IN3_PIN, HIGH);

digitalWrite(IN4_PIN, LOW);

analogWrite(ENA_PIN, 180);

analogWrite(ENB_PIN, 180);

Serial.println(F("Turning Left"));

}

void turnRight() {

digitalWrite(IN1_PIN, HIGH);

digitalWrite(IN2_PIN, LOW);

digitalWrite(IN3_PIN, LOW);

digitalWrite(IN4_PIN, HIGH);

analogWrite(ENA_PIN, 180);

analogWrite(ENB_PIN, 180);

Serial.println(F("Turning Right"));

}

void stopMotors() {

digitalWrite(IN1_PIN, LOW);

digitalWrite(IN2_PIN, LOW);

digitalWrite(IN3_PIN, LOW);

digitalWrite(IN4_PIN, LOW);

analogWrite(ENA_PIN, 0);

analogWrite(ENB_PIN, 0);

Serial.println(F("Stopped"));

}

bool isMovingForward() {

return (digitalRead(IN1_PIN) && !digitalRead(IN2_PIN) && 

        digitalRead(IN3_PIN) && !digitalRead(IN4_PIN));

}

[UKHeliBob]

Welcome to the forum

@divyapat

My code is

Please follow the advice given in the link below when posting code, in particular the section entitled 'Posting code and common code problems'

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Please post your full sketch, using code tags when you do

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In my experience the easiest way to tidy up the code and add the code tags is as follows

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[xfpd]

@divyapat

only firstly pressed butto

Check battery voltage.

Please, format and paste your code in a "code" block.

[ArminJo]

RTFM. Arduino-IRremote/Arduino-IRremote