Version v0.4

• Board re-drawn in KiCAD, likely the best open source EDA these days (and supported in Windows)
• Swapped Hotend and Fan outputs to solve some timer issues (fan is still using soft PWM for now)
• Updated marlin's pins file according to changes
• Added a few needed config flags in pins file
• Added BOM in documents directory
  

Version v0.3

• Squeezed a little bit the board, so it's 10cm long now.
• Added polarity indicators to some headers.
• Changed name of screw terminals.
• Added diode to LM1117 input, since I noticed that if there's no 12V input, 3.3V can be measured on 12V tracks.
• Added SDSS pin, so SD support testing can be started.

Version v0.2

Added an optional resistor to fix D+ pullup in bluepill, since its common to have a wrong value. More information on the STM32Duino Wiki: http://wiki.stm32duino.com/index.php?title=Blue_Pill

First alpha release

I've been tweaking the board for a while now, and I guess it's time for a release. Apparently the "bugfix-2.0.x" branch in Marlin Firmware now works in a bluepill board, so people can use this board to test it. Please note this is an alpha release, meaning a lot of things can be wrong.