Arduino uno datasheet dimensions8/4/2023 ![]() } Code language: Arduino ( arduino ) Code Explanationįirst we have to define the Trig and Echo pins. Prints the distance on the Serial Monitor Serial. Reads the echoPin, returns the sound wave travel time in microseconds Sets the trigPin on HIGH state for 10 micro seconds digitalWrite(trigPin, HIGH) Clears the trigPin digitalWrite(trigPin, LOW) begin( 9600) // Starts the serial communication PinMode(trigPin, OUTPUT) // Sets the trigPin as an Output pinMode(echoPin, INPUT) // Sets the echoPin as an Input Serial. */ // defines pins numbers const int trigPin = 9 ![]() Ultrasonic Sensor HC-SR04 and Arduino Tutorial Here’s a code for measuring distance using the HC-SR04 ultrasonic sensor and Arduino. As an Amazon Associate I earn from qualifying purchases.
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