[chbot] STM32F103RET6 board

[Peter Ellens]

Hi Guys


Any chance one of you has a simple minimal breakout board with a 
STM32F103RET6 on it that I could beg/borrow/steal?


I can get one from Ali eventually (maybe)... but apart from the long 
wait, lately everything from Ali has gotten to Auckland then vanished 
never to be seen again.


What I'm trying to do is drop a binary firmware on it (its a custom 
version of Marlin 2, 3d printer firmware, but for an undocumented 
controller)

Trying and work out what pins they have allocated to what functions...

Luckily Marlin has serial interface so its possible to turn things on 
and off and look for the pin changes etc.



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