A few PCBs that help with connecting and debugging trackpoints to mechanical keyboards using QMK and zmk.
Warning
These circuits have not been tested yet.
Thinkpad trackpoints require a power-on-reset sequence before they can initiate a connection. This circuit allows you to perform this sequence and connect the trackpoint to a device that isn't able to perform it directly such as a QMK keyboard, a USB-to-PS2 adapter, etc...
For more information, check out Alon Swartz's detailed explanation.
A PCB that has a Molex Ezmate Pico connector on one side and a regular socket on the other.
It uses the same connector and pinout as my ThinkCorney keyboard.
Can be used to connect the trackpoint to the ThinkCorney as well as a breadboard, multimeter or logic analyzer for debugging.
Here are a few other helpful resources if you are into custom keyboards and trackpoints...
- ThinkCorney Keyboard - Clone of the corne keyboard, but wireless and with a trackpoint.
- Alon Swartz Trackpoint Info - Super useful info about trackpoints, reset circuits, etc.
- My zmk trackpoint support PR - Adds trackpoint support to zmk, the popular wireless mechanical keyboard firmware.
TLDR:
- Personal use with attribution
- Commercial use not allowed
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.
