Choppy PWM Controller Kit K9810

Sometimes you don’t need ultra-precise PWM control. Based on a 555 Timer, it provides a quick PWM solution for all sorts of applications from power tools to motor speed control, to dimming lights. If it’s just a simple knob-to-control power that you need, then this is the project for you. An ideal for beginners, to provide reliable PWM outputs for 12V systems.

This kit is featured in DIYODE Magazine: Issue 9, March 2018. To follow instructions or to simply read up about the controller visit the

For additonal code, or to discuss this project, visit the
DIYODE Choppy" The PWM Maker Kit Page

Important Note For Kit Buyers:
This product is supplied in component form and requires soldering, drilling, and assembly. We recommend users are familiar with at least basic electronic principles and have the ability to solder.