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STM32F4 breakout board in pro micro pinout. Designed mainly for ergo split keyboards.

STeMCell

STM32 breakout in promicro footprint

Features:

  • Pro micro footprint
  • STM32F4x1 series MCU
  • Two layer PCB
  • Support half duplex USART communication in any of D0, D1, D2, D3 using jumpers
  • Onboard switch to enable/disable USB DFU bootloader
  • Inbuilt TX pullup for UART half duplex communication
  • User LED on PA8
  • Extra 5 pinout on bottom like Elite C
  • Supports QMK and ZMK
  • JLCPCB assembly supported

v2.0.0

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