How measure the distance using Ultrasonic sensor
Source code. const int out = 12; const int in = 13; void setup() { Serial.begin(9600); pinMode(in, INPUT); pinMode(out, OUTPUT); } void loop() { long dur; long dis; long tocm; digitalWrite(out, LOW); delayMicroseconds(2); digitalWrite(out, HIGH); delayMicroseconds(10); digitalWrite(out, LOW); dur = pulseIn(in, HIGH); tocm = microsecondsToCentimeters(dur); Serial.println(String(tocm)); delay(100); } long microsecondsToCentimeters(long microseconds) { return microseconds / 29 / 2; }
