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For what its worth my keyboard has two pi-based chips on it and they run cool to the touch. It is a rp2040 based pi. I dont actually know the details of the chip only that it has a raspberry pi symbol on it.
These chips (I can link you on amazon) might be a decent replacement (you need to check im just speculating herE).
This is true, but it doesnt sound like he needs much.
@freemo @darth Maybe, but there is a world of difference between a simplistic Arduino-style device and a single board computer. The SBC is essentially a whole (albeit weak) computer, whereas the Arduino is a device with much more simplistic capabilities. You can't even use the same code. It depends on what it's doing. Handling a keyboard is a great task for an Arduino-like device and bad for a SBC, and conversely running LAN firewall/NAT is great for a SBC and not viable for an Arduino.
