Fan controller protects home theater equipment

Fan controller protects home theater equipment

MAKE subscriber WidgetNinja writes in to share their first circuit board design, a fan speed controller. This circuit monitors air temperature in a home theater equipment cabinet, and regulates the speed of a fan in order to keep the whole thing cool.

Rather than using a microcontroller and some custom code, this controller is based around the TC649 fan controller from Microchip. A neat feature that this chip incorporates is a fault detection circuit, that will trigger if the fan motor stops working. It’s probably overkill for most projects, however it could come in handy if you are using the fan to protect expensive equipment from being damaged.

Congratulations on your first build, it looks great!

Discuss this article with the rest of the community on our Discord server!


Maker Faire Bay Area 2023 - Mare Island, CA

Escape to an island of imagination + innovation as Maker Faire Bay Area returns for its 15th iteration!

Buy Tickets today! SAVE 15% and lock-in your preferred date(s).