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I tried to reuse some parts of my dead note­book. After watch­ing this video, I tried to attach a PS/2 Cable to my Synap­tics based touch­pad, which is quite straightforward.

Here are some pic­tures:

I plan to add cus­tom but­tons, as they are on a sep­a­rate board and one but­ton is defect. This but­tons can be con­nected to T6, Left Mouse But­ton and T7, Right Mouse But­ton. 5V = not pressed, 0V = key pressed.

Here is the Pinout for the Synap­tics chip (ripped from the video):

Here is the PS/2 male con­nec­tor, ripped from the video:

There are sev­eral ver­sions of this chip, check the model num­ber. For exam­ple TM41PUGX134-1, where ‘P’ defines the host pro­to­col: P (PS/2), B (PS/2-and-Serial combo), and A (ADB). Other less com­mon let­ters are S (Serial-only) and T (TTL-level ser­ial). For more infor­ma­tion check the ‘Synap­tics Touch­Pad Inter­fac­ing Guide’.