TMK Keyboard Converter PCB with Mini DIN connector

This converts pre-modern keyboard protocols into modern USB using TMK Keyboard Firmware Collection.

You can buy assembled converter here. https://geekhack.org/index.php?topic=72052.0

Updates

2016/07/03 Rev 2.4 Changed foot print of USB microB and Xtal 2015/09/29 Rev 2.2 Changed LED footprint

Supported Protocols

See this for supported protocols.

PS/2(ScanCode Set 2)

MiniDIN 6P

Apple Desktop Bus

MiniDIN 4P

Sharp X68000

MiniDIN 7P

Sun Type3-5

MiniDIN 8P

NEC PC98

MiniDIN 8P

NeXT

MiniDIN 5P

Schematics

converter_schematic.pdf

PCB Revisions

PCB rev1

Rev1 has lands for MiniDIN and IO pads for other interface than MiniDIN. With wire jumpers it can support many protocols. It uses Atmel AVR ATmega32U4.

PCB rev2

Rev2 is smaller and supports only protocols which uses MiniDIN connector and can be configured with solder jumpers on bottom of the board. It uses Atmel AVR ATmega32U2.

PCB rev2.1

Fixed misaligned pins of Mini DIN connector, clearance of solder mask and silk prints.