Ch32v003 Alternatives

ch32v003 reviews and mentions

• A Single-Cycle 64-Bit RISC-V Register File
  2 projects | news.ycombinator.com | 4 Aug 2023

  There are some MCUs that use RV32E also - the CH32V003 [0] comes to mind.

  [0] - https://github.com/openwch/ch32v003

• CH32V003 Printf Serial Diagnostic Output?
  1 project | /r/RISCV | 11 Mar 2023
• nanoCH32V003 board
  4 projects | /r/RISCV | 16 Feb 2023
• 2x 2538 SMD LED for the key switch. How do I make this workout?
  1 project | /r/CustomBoards | 26 Nov 2022

  Higher interest in the mechanical issue. Kailh box aren't made for 5050-equivalent-sized LEDs so the best I can come up with is placing them on a daughter board with some distance and just accepting losing some light. Probably will use a low-cost microcontroller and R2R leader (current sink) to make them addressable. Alternatively, make use of the 11 bit PWM and LC filter while the ADC forms the feedback loop. Currently unsure if I go with WCH CH32V003 (https://github.com/openwch/ch32v003) or Padauk MCUs. A couple of kHZ PWM should be fine but if I make a PCB I might as well just go all in with PWM-free.

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