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docking station + STM32 keypad

Overview

Essentially, it's a USB docking station plus an STM32 keyboard. There aren't any ready-made products I need on the market, and since I've been playing with STM32 recently, I decided to try it myself. Any chip that supports HID will do; I haven't tried other chips yet.
Some points:
1. Due to the high integration, soldering is difficult, which is not user-friendly for beginners like me.
2. The key actuation force is a bit high, making it not smooth to press. The keys in my project are 260GF small keys.
3. I initially planned to make a 4x4 matrix, but found that I didn't need that many, so I reduced the number. There's still room for development on the back.
4. Other types of Type-C connectors can be chosen; differential pair wiring is sufficient.
5. Since this is just for fun, no protection circuit was designed, so it's not anti-static.

Design Files

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Update:2026-03-28 07:14:47

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