Keyestudio Ks0428 Manual page 176

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digitalWrite(servoPin,HIGH);
delayMicroseconds(pulsewidth);
digitalWrite(servoPin,LOW);
delay((20 - pulsewidth / 1000));
}
}
//The function to control ultrasonic sensor
float checkdistance() {
digitalWrite(Trig, LOW);
delayMicroseconds(2);
digitalWrite(Trig, HIGH);
delayMicroseconds(10);
digitalWrite(Trig, LOW);
float distance = pulseIn(Echo, HIGH) / 58.00;
2*29.1=58.2
delay(10);
return distance;
}
//****************************************************************
void setup(){
pinMode(servoPin, OUTPUT);
procedure(90); //set servo to 90°
//58.20, that is,
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