The Beauty of a Laptop Trackpad Circuit Board

I once had a laptop whose trackpad acted erratic, scrolling left to right in a quick hyper-active fashion. The manufacturer determined the battery, around 4 years old at the time, was slightly expanding, and causing pressure upon the trackpad. The diagnostics included a screen with a grid-like box for analyzing trackpad depressions. Sure enough there was a straight left-to-right line that formed in the diagnostic tool, mimicking mouse swipes that weren’t happening; the battery was definitely to blame. But it never dawned on me what the trackpad circuit board itself looked like – and so when my friend Darius recently posted this picture it suddenly all made sense!

I never realized how pretty the #circuitboard of a #trackpad was

A post shared by Darius B'Alexander (@antsinthekitchen) on

If I ever have to scrap another laptop (my current Lenovos are still chugging along after 5+ years in operation) I’ll be sure to salvage the trackpad circuit – that thing is a beauty!


As 2022 starts, let’s take some time to share our goals for CircuitPython in 2022. Just like past years (full summary 2019, 2020, and 2021), we’d like everyone in the CircuitPython community to contribute by posting their thoughts to some public place on the Internet. Here are a few ways to post: a video on YouTub, a post on the CircuitPython forum, a blog post on your site, a series of Tweets, a Gist on GitHub. We want to hear from you. When you post, please add #CircuitPython2022 and email circuitpython2022@adafruit.com to let us know about your post so we can blog it up here.

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