LailaTheElf/KlipperToolboard
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Pontus Borg 2020-05-18 16:57:45 +02:00
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Board.jpg
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README.md
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@ -1,7 +1,6 @@
# Klipper Toolboard
# Huvud 3D Printer toolhead board
A very small 3D printer board for use on a toolhead.
![Image of Board](Board.jpg)
Features:
@ -13,12 +12,11 @@ Features:
* One endstop
* CAN bus
Main power is 12-24V
Main power is 12-24V. 24V is preferred to keep the currents low
The CAN Bus is not terminated, instead it uses 4 wires, termination should be done at the other end.
The CAN Bus is not terminated, instead it uses 4 wires, termination should be done at other end.
It uses an external 5V switch regulator.
It uses an external 3.3V switch regulator.
All done in KiCad
@ -26,11 +24,19 @@ Possible issues:
* Is the cooling for the TMC2209 adequate?
Change ideas:
Is the endstop useful? Better with a servo output?
Is the endstop useful? Could be used as a filament runout sensor.
---
2020-05-18:
First prototype production run is done.
![First board](FirstPic.jpg)
The board works mostly as intended. Some quick tests shows that the MCU can run klippy, stepper drivers, fan drivers and thermistors works perfectly fine.
But the CAN bus has very poor signals and gets lots of TX or RX errors
Use an STM32F103 instead? Pinout is the same. F042 has klipper CAN support. Porting the klipper code to F103 should not be that hard.