Reviving a Cowboy 4 eBike

I inherited an unresponsive Cowboy ebike from the startup I worked at. At the time, the only known issue was that the hydraulic brake levers were b...

April 19, 2025

Portable Battery-Powered Bench PSU

This is from this past year, but I hadn’t written anything down until now.

April 12, 2025

Budget Bike Shop Stand

Bike-shop-quality repair stands are very sturdy, but expensive. Most of these stands are bolted to a post, a wall, or a workbench unlike the freest...

April 12, 2025

A note about rebuilding a Dyson V8 battery

I rebuilt the battery pack for my Dyson V8 vacuum cleaner. This isn’t particularly interesting in itself, but there are a few niche things to be aw...

April 11, 2025

Closet Desk

Our home is pretty small, so we’ve had to maximize our space. I built this desk into the closet.

March 20, 2025

Cat Carpet Wall Theatre

I recently made a carpeted wall for my cats to climb. I’ve now added an old projector to the mix, and it’s become a cat theater.

March 12, 2025

A tiny gripe about the T-Display-S3

The LILYGO T-Display-S3 is really pretty great. Their non-touchscreen version is $13. For some projects, I’d normally get a custom PCB made and ass...

March 10, 2025

Smart Bike Helmet Teardown

Here are photos from taking apart the Brooklyness/Classon smart bike helmet. I found the product to be a great idea with half-assed software. It wa...

February 15, 2025