LailaTheElf/KlipperToolboard
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Pontus Borg 2020-06-10 00:40:05 +02:00
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@ -48,10 +48,23 @@ It is possible to fit different connectors for most functions. It is designed fo
For a larger (>30) production run the boards would have to be panellized, which looks like a non-trivial task with KiCAD. If anyone has experience and wants to help ... For a larger (>30) production run the boards would have to be panellized, which looks like a non-trivial task with KiCAD. If anyone has experience and wants to help ...
2020-06-04: 2020-06-10:
Version 0.4 in the works... Version 0.4 is almost complete.
* It has an on-board 3.3V regulator replacing the external board. (Quite a challenge for an old SW engineer using JLCPCB's very limited selection of components)
* Thermistor connector moved down next to the fan/heater connectors
* Lower profile capacitor for the stepper driver, it was very tall.
* Debug header moved and extended. BOOT1 exposed.
* 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.
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.
I'll very soon order another 20-30 board to send out to brave beta testers.
# Can Hat # Can Hat
![Can Hat](CanHat.jpg) ![Can Hat](CanHat.jpg)