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/diy/ - Do-It-Yourself


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>> No.1611073 [View]
File: 111 KB, 402x831, na113Ro.png [View same] [iqdb] [saucenao] [google] [report]

folks on the cemetech forum mention using a microcontroller (MSP430) to relay the keypresses. The pi is apparently slow at handling the keyboard matrix on it's own, and would waste a lot of time.


is a french project working on this sort of thing, but no clue how their development is going.

a dude on the cemetech forums went through the trouble of making a PCB rather than interfacing with the one already in the calculator, if that's any indication. Obviously, you'd want the keypad to look and feel legit, but it seems like a real motherfucker to pull off.

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