# How to control a servo with PWM on I/O extender

**URL:** <https://community.victronenergy.com/t/how-to-control-a-servo-with-pwm-on-i-o-extender/53068>\
**Category:** DIY\
**Tags:** gx\_device, marine, cerbo\_gx, diy\
**Created:** [9 February 2026 02:13 UTC](https://community.victronenergy.com/t/how-to-control-a-servo-with-pwm-on-i-o-extender/53068 "2026-02-09T02:13:46Z")\
**Posts on this page:** 1\
**Page:** 1

<div class="post-metadata">

**Author:** ![chuetchen](https://avatars.discourse-cdn.com/v4/letter/c/a9adbd/32.png) [@chuetchen](https://community.victronenergy.com/u/chuetchen)\
**Post date:** [9 February 2026 02:13 UTC](https://community.victronenergy.com/t/how-to-control-a-servo-with-pwm-on-i-o-extender/53068/1 "2026-02-09T02:13:46Z")

</div>

Hi,

does anyone have experience with PWM on Cerbo GX / I/O extender controlling a servo?

I would like to ctrol the servo rotation of a servo.

The servo should open/close a pipe flap ofa heating pipe…