Programming the AT90USBKEY2

In my continuing quest to turn a thinkpad keyboard into a USB keyboard, I decided to try the at90 line of avr chips. Bought a AT90USBKEY2 dev kit, and tried to put TMK on it.

This was another “one” day project. It ended in running the onekey example, so this post is more just “how to use the AT90USBKEY2.

Building a custom thermostat

So at i3, one issue we have is people leaving the thermostats on high temepratures and going home.

So we built our own into the automation system.

RF interferance on buttons

We are seeing mysterious button presses on one of our iot lightswitches at i3.

Herein lies the debugging so far.

USB Thinkpad Laptop Keyboard

One thing I’ve wanted for a while is a USB keyboard with a trackpoint.

I made a good start with an atmega32u4 on an arduino micro board.

Arduino Media Keypad

I wanted a small programmable keypad. It’s primary purpose was to be media keys for a model M that needed to be cleaned and bolt modded, but now that I use a (different) model M, I finished the project.

Hard Drive Power Supply

Really more of a test post to get this blog off the ground, but today I made a power supply for a hard drive out of some 12v power brick by soldering in a LM78M05 to add a 5v rail.