I wonder it it's possible to build a project to be Open Source end to end. Use RISC-V, @raspberrypiorg.bsky.social, @arduino.bsky.social ESP32 as processors, @kicad.org for design write in Python and publish on @github.com. 3D print enclosure
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If you replace the pi with https://www.beagleboard.org/boards/beagley-ai somewhat closer. I'm working towards a completely open robotic platform like that. Link in bio if you're interested
Depends on your definition of "Open Source" when it comes to hardware. RPi, for example, doesn't even have board schematics available, and you can't source the SoCs for many of their products, so it's not open hardware. RISC-V is an openly defined spec, but all taped out implementations are closed.
You need to be very precise and realistic with what you mean with "Open Source" when it comes to hardware, because it's not really possible to iterate on SoC HDL implementations outside of FPGA synthesis, on FPGAs that are themselves closed designs with often proprietary toolchains.
Instead look for specific things that are in the spirit of openness but rigidly defined:
1. Are schematics of boards available? Can I redistribute it or make derivatives?
2. Is the Technical Reference Manual of the processor freely available?
3. Is the software for programming the processor open?
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That being said, there are FPGA-based projects like this with open hardware
1. Are schematics of boards available? Can I redistribute it or make derivatives?
2. Is the Technical Reference Manual of the processor freely available?
3. Is the software for programming the processor open?