4 Pin Ultrasonic Sensor

This preset can be used with ultrasonic distance sensors that use 4 pins.

Supported Products

  • Ultrasonic Module HC-SR04 Distance Measure Transducer Sensor

Decleration Code

int echoPin = 7;
int trigPin = 8;
int maxPulse = 100;         // Maximum micros to wait for a pulse
long duration;

Setup Code

pinMode(trigPin, OUTPUT);
pinMode(echoPin, INPUT);


digitalWrite(trigPin, LOW);

digitalWrite(trigPin, HIGH);

digitalWrite(trigPin, LOW);
duration = pulseIn(echoPin, HIGH, maxPulse);

Output_Activation = transform(duration, 0, maxPulse, 0.0, 1.0);

No required source files.

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