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Open Source Very Large Stick - Freejoy & MMjoy2 breakout board
A component for the Open Source - Very Large Stick microcontroller system.
https://github.com/RightRudderLeftStick/OpenSource-VeryBigStick
This PCB allows you to easily breakout the required IO from either an Arduino Pro Micro or Bluepill STM32
This has been revised to version 1.4 which fixes a mistake on the TM MINI DIN pin orientation.
I've also added 13 more button IO pins that work with Freejoy (MMJOY2 can use them for a button matrix).
This way you can take a 3d printed B8 grip and wire directly to each button.
https://www.thingiverse.com/thing:5764003