I designed this adapter for my Apple Extended Keyboard. The goal was to create an ADB to USB adapter that would not require me to modify my keyboard in any way. The only vintage computer part that was harmed in the making was a spare ADB cable I had lying around.

Assembly instructions can be found on hasu@tmk's GitHub page (see link below). Without his firmware, my Apple Keyboards would still be in storage collecting dust.

Parts List:

• Teensy 2.0 Microcontroller

• 10 kOhm resistor x1

• Self-Tapping Plastic Screw x4

• ADB cable x1

• 3D Printed Housing (found on this page!)

Firmware & Instructions:

The firmware and assembly instructions can be found on hasu@tmk's GitHub page. See the following link below:

https://github.com/tmk/tmk_keyboard/blob/master/converter/adb_usb/README.md