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Soarer PS/2 to USB keyboard converter

https://deskthority.net/workshop-f7/xt-at-ps2-terminal-to-usb-converter-with-nkro-t2510.html

You need

ATMega32U4 Microcontroller/Arduino. E.g. Arduino Pro Micro
PS/2 female connector

Hardware

PS/2 -> Arduino

Data (green) -> PD0 (Pro Micro: 3)
CLK (white) -> PD1 (Pro Micro: 2)
5V (red) -> 5V
GND (black) -> GND

Arduino Pro Micro pinout

http://www.pighixxx.com/test/wp-content/uploads/2016/07/pro_micro_pinout_v1_0_red.png

Firmware

https://deskthority.net/workshop-f7/xt-at-ps2-terminal-to-usb-converter-with-nkro-t2510.html

Soarer_Converter_v1.12_update.zip: https://deskthority.net/resources/file/8295

Flashing firmware

https://sourceforge.net/projects/winavr/

avrdude -p m32u4 -b 57600 -P com5 -c avr109 -U flash:w:Soarer_at2usb_v1.12_atmega32u4.hex

Bootloader mode: RST to GND two times. You have couple of seconds to start flashing. Serial port can be different than in normal mode.

Testing/Debugging

hid_listen.exe: https://www.pjrc.com/teensy/hid_listen.html

Settings/Tools/Docs

https://deskthority.net/workshop-f7/xt-at-ps2-terminal-to-usb-converter-with-nkro-t2510.html

Soarer_Converter_v1.10.zip: https://deskthority.net/resources/file/6142

Links

https://geekhack.org/index.php?topic=17458.0

Keyboard controller

https://geekhack.org/index.php?topic=50437.0
https://deskthority.net/workshop-f7/soarer-s-keyboard-controller-firmware-t6767.html Soarer_Controller_v1.20_beta4.zip