This is a breakout board for the STM32F103 - TQFP48 Package
Eagle CAD/ Sketchup 3D Model/
Hackaday project page is at http://hw-by-design.blogspot.com/2018/08/stm32f103-breakout-board.html
Releases: forgot 1.5K pullup on USB D+, fixed in v.3
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