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by duskwuff
1716 days ago
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1. Any ATmega32U4 development board. Most commonly sold as "Arduino Pro Micro". Developing a keyboard emulator in the Arduino IDE is pretty easy; if you don't want to do that, LUFA is a great little USB stack. 2. Raspberry Pi Pico. Newer, so it's less well documented, but much more powerful. |
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For the RPi Pico specifically, the TinyUSB driver is the way to go. This also supports USB host (plugging a keyboard into the Pico), but that didn't support the mouse scrollwheel when I tried.
https://github.com/hathach/tinyusb/blob/master/examples/devi...
If you're interested in larger-scale manufacturing, and are willing to invest more time and effort in once-off R&D to reduce the per-unit cost, then there's a lot more options of other MCUs (e.g. PIC, Cypress, STM32).
https://en.wikipedia.org/wiki/List_of_common_microcontroller...
Mitch Davis gave a great talk at the Embedded Online Conference this year (which my wonderful manager assigned us time to watch during working hours!), where he bridges the gap between hobbyist Arduino development and professional Embedded engineering. (It's closer than you might think)
https://www.youtube.com/watch?v=mI4FDp5crhE
Miro Samek also has a great series of lectures (which I learned about in the same Embedded Online Conference), which then levels up from an Arduino-style "superloop" to an RTOS, Active Object design pattern, and beyond.
https://youtu.be/o3eyz1gEqGU?t=363
Welcome to embedded development, I hope you enjoy creating new gadgets, and don't forget to share your adventures with the community so we can encourage you along!