Servo Write Pin

Write a value to the servo on the specified pin and control the shaft.

This function will move the shaft of a standard servo to the specified angle, or set the speed of a continuous rotation servo. (0 specifies full speed in one direction, 180 specifies full speed in the other, and approximately 90 specifies no movement.)

pins.servoWritePin(AnalogPin.P0, 180)


  • name: a string that specifies the pin name (P0 through P4, or P10)
  • value: a number from 0 through 180


Setting the shaft angle to midpoint on a servo

pins.servoWritePin(AnalogPin.P0, 90)

Controlling the shaft by using the tilt information of the accelerometer

basic.forever(() => {
    let millig = input.acceleration(Dimension.X)
    // map accelerometer readings to angle
    let angle =, -1023, 1023, 0, 180)
    pins.servoWritePin(AnalogPin.P0, angle)

Setting the full speed on a continuous servo

pins.servoWritePin(AnalogPin.P0, 0)

See also

micro:bit pins, servo set pulse

Brief Guide to Servos