Program says this is right but the lights are not working with the ir remote

Using Arduino Project Guidance
1 
//www.elegoo.com

#include <IRremote.h>

////////// IR REMOTE CODES //////////
#define F 16736925  // FORWARD
#define B 16754775  // BACK
#define L 16720605  // LEFT
#define R 16761405  // RIGHT
#define S 16712445  // STOP
#define UNKNOWN_F 5316027     // FORWARD
#define UNKNOWN_B 2747854299  // BACK
#define UNKNOWN_L 1386468383  // LEFT
#define UNKNOWN_R 553536955   // RIGHT
#define UNKNOWN_S 3622325019  // STOP
#define KEY1 16738455
#define KEY2 16750695
#define KEY3 16756815
#define KEY4 16724175
#define KEY5 16718055
#define KEY6 16743045
#define KEY7 16716015
#define KEY8 16726215
#define KEY9 16734885
#define KEY0 16730805
#define KEY_STAR 16728765
#define KEY_HASH 16732845

#define RECV_PIN  11

/*define channel enable output pins*/
#define ENA 5   // Left  wheel speed
#define ENB 6   // Right wheel speed
/*define logic control output pins*/
#define IN1 7   // Left  wheel forward
#define IN2 8   // Left  wheel reverse
#define IN3 9   // Right wheel reverse
#define IN4 11  // Right wheel forward
#define carSpeed 250  // initial speed of car >=0 to <=255

IRrecv irrecv(RECV_PIN);
decode_results results;
unsigned long val;
unsigned long preMillis;

/**
   BEGIN DEFINE FUNCTIONS

*/

int i = 9;
int red = 10;
int blue = 2;

void forward() {
  digitalWrite(ENA, HIGH);
  digitalWrite(ENB, HIGH);
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, HIGH);
  Serial.println("go forward!");
}
void back() {
  digitalWrite(ENA, HIGH);
  digitalWrite(ENB, HIGH);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  digitalWrite(IN3, HIGH);
  digitalWrite(IN4, LOW);
  Serial.println("go back!");
}
void left() {
  analogWrite(ENA, carSpeed);
  analogWrite(ENB, carSpeed);
  digitalWrite(IN1, LOW);
  digitalWrite(IN2, HIGH);
  digitalWrite(IN3, LOW);
  digitalWrite(IN4, HIGH);
  Serial.println("go left!");
}
void right() {
  analogWrite(ENA, carSpeed);
  analogWrite(ENB, carSpeed);
  digitalWrite(IN1, HIGH);
  digitalWrite(IN2, LOW);
  digitalWrite(IN3, HIGH);
  digitalWrite(IN4, LOW);
  Serial.println("go right!");
}
void stop() {
  digitalWrite(ENA, LOW);
  digitalWrite(ENB, LOW);
  Serial.println("STOP!");
}

void setup() {
  Serial.begin(9600);
  pinMode(IN1, OUTPUT);
  pinMode(IN2, OUTPUT);
  pinMode(IN3, OUTPUT);
  pinMode(IN4, OUTPUT);
  pinMode(ENA, OUTPUT);
  pinMode(ENB, OUTPUT);
  stop();
  irrecv.enableIRIn();
  pinMode(red, OUTPUT);
  pinMode(blue, OUTPUT);
  pinMode(i, OUTPUT);
}
void blink() {
  digitalWrite(red, HIGH);
  digitalWrite(blue, LOW);
  delay(400);
  digitalWrite(red, LOW);
  digitalWrite(blue, HIGH);
  delay(400);
  digitalWrite(red, HIGH);
  digitalWrite(blue, LOW);
  delay(400);
  digitalWrite(red, LOW);
  digitalWrite(blue, HIGH);
  delay(400);
}

void loop() {
  blink();
  blink();
  if (irrecv.decode(&results)) {
    preMillis = millis();
    val = results.value;
    Serial.println(val);
    irrecv.resume();
    switch (val) {
      case F:
      case UNKNOWN_F: forward(); break;
      case B:
      case UNKNOWN_B: back(); break;
      case L:
      case UNKNOWN_L: left(); break;
      case R:
      case UNKNOWN_R: right(); break;
      case S:
      case UNKNOWN_S: stop(); break;
      default: break;

    }
  }
  else {
    if (millis() - preMillis > 500) {
      stop();
      preMillis = millis();
    }
  }
}
2

I am guessing, but your "program says this is right" means your sketch compiled without error, but the LEDs are not lighting.

You verified LED polarity? Short lead(s) toward ground. Long lead(s) toward Vcc.

Also, make sure the IR Remote makes the codes that you expect (make a sketch to capture them). I have a few IR sensors that are "right" about half the time with a handful of IR Remotes around my room.

1 Like
3

Thank you so much! I thought it was my coding haha

4

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