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Table of Contents
STM32duino
The STM32duino board is based on the ARM Cortex M3 like the Arduino Duo. The version I use is the Blus Pill I bought on E-Bay.
USB Fix
Unfortunately the board comes with a wrong pullup resistor on D+. If that makes problems just replace R10 with an 1.5K resistor like shown here: http://wiki.stm32duino.com/index.php?title=Blue_Pill#Hardware_installation
Schematic
Here one find the schematic and the manufacturer data.
Specification
Model: STM32F103C8T6 Core: ARM 32 Cortex-M3 CPU Debug mode: SWD 72MHz work frequency 64K flash memory, 20K SRAM 2.0-3.6V power, I/O Reset(POR/PDR) 8MHz crystal
