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STeMCell

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

Install / Use

/learn @megamind4089/STeMCell
About this skill

Quality Score

0/100

Category

Design

Supported Platforms

Universal

README

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

v2.1.0

<p align="center"> <img alt="front" src="images/front.png" width="45%"> &nbsp; &nbsp; &nbsp; &nbsp; <img alt="back" src="images/back.png" width="45%"> </p>
View on GitHub
GitHub Stars120
CategoryDesign
Updated3mo ago
Forks10

Languages

HTML

Security Score

82/100

Audited on Dec 21, 2025

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