LailaTheElf/KlipperToolboard
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@ -59,7 +59,7 @@ Version 0.4 is almost complete.
* Serial pins removed, not very useful anyway
* Fan/heater connectors tweaked to be able to fit JST XH, screw terminals or Molex KK connectors.
* Added a micro-USB connector for easier flashing and possibly other features. The board is not powered from USB.
* Switched to an STM32F106, mainly to allow for a proper bootloader and flashing over USB. Or even over CAN if I develop a custom bootloader. With many boards it would be very nice to be able to bulk flash them all at once over CAN.
* Switched to an STM32F103. Mainly to allow for a proper bootloader and flashing over USB. Or even over CAN if I develop a custom bootloader. With many boards it would be very nice to be able to bulk flash them all at once over CAN.
I have done thermal stress testing of the board. It can run a big stepper at 1.5A, board attached very close to the hot stepper with no forced airflow and 25C ambient. The driver reaches 90C (measured with a probe) but does not shut down due to overheating. The entire board heats up as designed to act as a heatsink, most inner and outer copper layers are groundplanes to spread the heat.