qmk-firmware/keyboards/speedo/readme.md

Speedo

Keyboard Maintainer: Paul Ewing
Hardware Supported: Teensy 2.0
Hardware Availability: You will have to get the plates cut by an online service such as Ponoko. Case files are available in the Speedo Repository.

Make example for this keyboard (after setting up your build environment):

make speedo:default

See build environment setup then the make instructions for more information.

Flashing the Firmware

See the QMK docs for handwiring a keyboard; there is a section with instructions on how to flash the .hex file to the Teensy 2.0 controller.