Lara Grant

Potentiometer Controlling a Servo

INPUT: Potentiometer
OUPUT: 1 Servo

DESCRIPTION: Control a servo position using a potentiometer

[code lang=”arduino” light=”true”] // Controlling a servo position using a potentiometer (variable resistor)
// by Michal Rinott <>

#include <Servo.h>;

Servo myservo; // create servo object to control a servo

int potpin = 0; // analog pin used to connect the potentiometer
int val; // variable to read the value from the analog pin

void setup()
myservo.attach(9); // attaches the servo on pin 9 to the servo object

void loop()

val = analogRead(potpin); // reads the value of the potentiometer (value between 0 and 1023)
val = map(val, 0, 1023, 0, 180); // scale it to use it with the servo (value between 0 and 180)
myservo.write(val); // sets the servo position according to the scaled value
delay(15); // waits for the servo to get there

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