Code
#include <Servo.h> Servo servo1; int trigPin = 9; int echoPin = 8; long distance; long duration; void setup() { servo1.attach(7); pinMode(trigPin, OUTPUT); pinMode(echoPin, INPUT);// put your setup code here, to run once: } void loop() { ultra(); servo1.write(0); if(distance <= 10){ servo1.write(90); } } void ultra(){ digitalWrite(trigPin, LOW); delayMicroseconds(2); digitalWrite(trigPin, HIGH); delayMicroseconds(10); digitalWrite(trigPin, LOW); duration = pulseIn(echoPin, HIGH); distance = duration*0.034/2; }