Smart Blind stick Code
Code int trigpin = 4; int echopin = 5; int buzzer= 3; long duration; int distance; void setup() { pinMode(3,OUTPUT); pinMode(trigpin, OUTPUT); pinMode(echopin, INPUT); } void loop() { digitalWrite(trigpin, LOW); delayMicroseconds(2); digitalWrite(trigpin, HIGH); delayMicroseconds(10); digitalWrite(trigpin, LOW); duration = pulseIn(echopin, HIGH); distance = duration*0.034/2; Serial.print("Distance: "); Serial.println(distance); if(distance<30) { digitalWrite(3, HIGH); } else { digitalWrite(3, LOW); } }