Servo driven by a potentiometer

Goal

Make the servo arm follow the knob position.

Why it matters

Your first direct input → output control, the basis of robotics.

Steps

1. 01Read A0.
2. 02map(value, 0, 1023, 0, 180).
3. 03Apply the angle to the servo, with a short delay.

Next tutorials

• PWM: dimming an LED

  Breathe an LED from 0 to 255 with analogWrite().

• Potentiometer → brightness

  Set LED brightness with the knob (10 bits to 8 bits).

• RGB LED: mixing colours

  Create any colour with three PWM channels.

• Smooth fade (sine curve)

  Make the fade look linear by using a non-linear curve.