The #1 product on my Tindie store in the Brymen 867/869 interface cable. The first version was based on an ATtiny45, but I then switched…
For charging multiple USB devices at once, I created this board, which plugs into an old ATX power supply. I’ve written an article about it…
Generally speaking, the USB interface is pretty complicated. This is also true if you want to charge or just deliver some power over USB –…
If you ever read any other articles on my blog, you know that most of them are about devices I’ve constructed and used for a…
If you ever worked with lithium batteries, you probably know the TP4056 – a chip for charging lithium batteries with CC-CV profile, two LEDs for…