IF Function seems not to work

Projects Programming
1

With the attached code I am using at HC-SR04 ultrasonic sensor, uppon reading a value from the sensor and printing to the serial monitor which seems to be working. The problem I'm having and can't find a solution through my own experimentation is that the IF statement seems to not function correctly, it outputs the initial condition and then does not reset through the else statement.

Arduino_HC-SR04_Test.ino (1.02 KB)

2

OP's code properly placed in code tags.

const int trigPinRight = 4;
const int echoPinRight = 5;
long durationRight;
int distanceRight;
const int LEDRight = 10;
const int VibrationRight = 8;

void setup() {
  // put your setup code here, to run once:
  pinMode(trigPinRight, OUTPUT);
  pinMode(echoPinRight, INPUT);
  pinMode(LEDRight, OUTPUT);
  pinMode(VibrationRight, OUTPUT);
  Serial.begin(9600);

}

void loop() {
  // put your main code here, to run repeatedly:
  digitalWrite(trigPinRight, LOW);
  digitalWrite(LEDRight, LOW);
  digitalWrite(VibrationRight, LOW);
  delayMicroseconds(2);

  digitalWrite(trigPinRight, HIGH);
  delayMicroseconds(10);
  digitalWrite(trigPinRight, LOW);
  delayMicroseconds(100);

  durationRight = pulseIn(echoPinRight, HIGH);
  distanceRight = durationRight * 0.034 / 2;
  if (digitalRead(distanceRight) <= 2) {
    digitalWrite(LEDRight, HIGH);
    digitalWrite(VibrationRight, HIGH);
  }
  else {
    digitalWrite(LEDRight, LOW);
    digitalWrite(VibrationRight, LOW);
  }
  Serial.print("DistanceRight: ");
  Serial.println(distanceRight);
  delay(1000);

}
3

the variable 'distanceRight' is not a pin on which to read the digital value

if (digitalRead(distanceRight) <= 2){
...

just use the variable directly

if (distanceRight <= 2){
...