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SpiffChorder Wiki

Spaceman Spiff's Chording Keyboard Experiment (or SpiffChorder for short) is an experimental platform for creating a USB chording keyboard (Chorded keyboard). Both the hardware design and software/firmware is open, and you can make modifications as you see fit. The license is based on Objective Development's license, which is now GPL, but with the addition that the hardware is documented and open as well.

Objective Development's AVR USB driver is a firmware-only implementation of the low speed USB standard (USB 1.1) which can be used on cheap AVR microcontrollers from Atmel.

The hardware for the SpiffChorder is very simple, and consists mainly of an ATmega8, a 12MHz crystal, and a few passive components for interfacing with the USB port. Apart from this 7 switches are connected, and optionally 3 LEDs for indicating the internal state.

Additional information is available at http://symlink.dk/projects/spiffchorder/, but this is slightly outdated.

Mikkel Holm Olsen AKA Spaceman Spiff

Greg Priest-Dorman

spiffchorder/forside.1199551888.txt.gz · Last modified: 2008/01/05 11:51 by spiff
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