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Great board to harvest the trackpoint module and wire it up as a PS2 HID device for a custom keyboard or controller. It uses the more nicely documented 28-pin TPM chip instead of the almost unheard-of 32-pin TPM. Alonswartz on GitHub (you'll have to google it, can't link) has a good tutorial and pinouts for making one of these trackpoint units talk to a trinket pro micro, or you can do like me and just pick up a cheapie PS2 to USB converter, cut off the wires, and solder it in.
Verified purchase: Yes | Condition: Pre-owned