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See my other comment. I wanted to learn rust, but by the end, once I knew it, I wouldn't have chosen rust for a prototype if I started again.

These prototypes are running on a raspberry pi, though I wouldn't want to put them into production like that.

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Ah so the docking board uses a raspberry Pi eh? You could probably implement the same using an esp32 (if u want wifi/Bluetooth) or even an stm32 chip, you can definitely find a good chip for under $5 each that can do what you need. That's another way to take your learning to the next level while reducing costs. Also not as difficult as it looks!

Yeah, I can run it on an stm32, which is what I'd do for an early Kickstarter where I only have to make <100.

Since I only made two, it was easier just to keep it on the raspi for now.

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