Arduino – Ultra Sonic – Basic
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#define trigPin 2 #define echoPin 3 long distances=0; void setup() { pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT); Serial.begin(9600); } void loop() { digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); distances=(pulseIn(echoPin, HIGH) / 29.1) / 2; Serial.print("distances : "); Serial.println(distances); } |