rahji.com

I created a circuit that zooms a camcorder in and out. This is the path I took.

I needed to hide a linux server inside a pedestal for a piece of sculpture that I’m working on. Bandsaw and drywall screws, it’s ugly but exactly what I needed.

I’m making something that requires remote control of a printing calculator. I’ve got it working.

I had trouble using Arduino 0009 to burn the bootloader onto a blank atmega8 with my ST500v2 development board. I eventually figured it out and here’s the deal.

This isn’t perfect, but it should do a pretty good job of highlighting your C source if you’re using TextMate to program an AVR using AVR Libc.

Teach your baby to be a hip hop producer early. This is a MIDI drum kit that I made using a microcontroller and another $2 find at Savers.

I made this keyboard from a $1 toy that I bought at Savers. I made some changes to the electronics including pitch control, a 555 timer circuit that adds extra resistance in secret places, a speed control for the timer, 1/4″ output jack, and a touch-contact for good measure. I fabricated the case [...]

Just a quick experiment to show that the NESpad library I wrote for the Arduino microcontroller actually works. An NES Advantage joystick acts as a mini MIDI drum pad.

I wrote this library, called NESpad, for anyone who wants to interface an NES game pad with the Arduino microcontroller. I also made an SNES library (SNESpad), but I haven’t tested it with an actual SNES joystick.

Joysticks 101. Basically, we’ve got two types of joysticks: analog and digital. You’ve probably used both kinds. The buttons work pretty much the same on either kind - you either click it or you don’t - but the actual “stick” part is what makes them different. This post [...]