Making the servomotors turn via sensor

Projects General Guidance
1

Hi all,

I'm still new to all this. But, I was trying to make 2 servo motors turn whenever the device
comes to close to an object via a distance-sensor.

My motors don't seem to react whenever the device comes close to an object though and I wonder what I could be missing.

Thanks in advance!

#include <Servo.h> // include a special file that is needed for servo motors, do this only once
Servo motor1; // create a servo object for each motor
Servo motor2;

void setup() {
// initialize the servo on pin 6
motor1.attach(10);
motor2.attach(11);
Serial.begin(9600);
// set input and output pins
pinMode(7, INPUT);
pinMode(8, OUTPUT);
}

void loop() {
// the trigger pin sends a pulse
digitalWrite(8, LOW);
delayMicroseconds(2);
digitalWrite(8, HIGH);
delayMicroseconds(10);
digitalWrite(8, LOW);

// the echo pin measures how long it took for that pulse to come back

Serial.println(pulseIn(7, HIGH));
if (pulseIn(7, HIGH) < 612)

motor1.write(0);
else {
motor1.write(90);

// delay in between reads for stability
delay(50);
}
}

2 
 Serial.println(pulseIn(7, HIGH));
if (pulseIn(7, HIGH) < 612)  // try to read the sensor again without triggering it

You trigger the sensor and get a pulse duration, then try to get another duration without triggering the sensor. Better would be to trigger the sensor and put the reading into a variable to print and compare.

unsigned long duration = pulseIn(7, HIGH, 30000); // micros() returns unsigned long
Serial.println(duration);
if(duration < 612)
{
   // do stuff
}
3

Thank you so much, I figured it out!