Comments (4)
bondus
commented on July 23, 2024
Things change a lot on component availability.
The resistors should be easy to find replacements for. R4 and R7 are the current sense resistors for the stepper, quite critical components, you can use different resistances for them. Lower than 0.1ohm, but must be 1% and 1/4W if I remember right.
Check the TMC datasheet for what's required and klipper documentation for how to configure.
U3, TPS54202/TPS54302/TPS54308 is out of stock everywhere I'm afraid. L4 is a coil related to that.
I have been working on fitting a TPS54331 instead of the TPS54302, it does fit. But as a CS engineer it will take me 3 prototype rounds to get it right. It's tricky to get those voltage regulators to behave. Know any EEs?
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necrogami
commented on July 23, 2024
I don't know any EE's i do know a CE, i studied electronics eons ago in hs but i figure i've lost more then remembered. I can ask around.
Whenever this gets updated i'm probably going to order like 50 as i have a 20-40 toolhead idea in my mind and i want some spares incase i blow some up somehow.
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necrogami
commented on July 23, 2024
Also it looks like MWSA0503S-100MT replaces MWSA0503-100MT
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necrogami
commented on July 23, 2024
It appears that some stock has returned @ JLCPCB
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Related Issues (20)
- Question: running this on a 12v system HOT 1
- Minimal components for just stepper motor control? HOT 2
- Inductive probe? HOT 5
- Availability? HOT 2
- USB details HOT 2
- Termination resistor HOT 2
- Can use RP2040? HOT 2
- Update buy links and photo in README for 0.61
- Questions: Alternate TMC driver setup HOT 2
- Question: Endstop Header VCC
- Thermister accuracy at low temperatures ( E3D V6 ) HOT 8
- Waveshare RS485 + Pi Zero W 2 HOT 1
- Can't flash Huvud 0.61 HOT 4
- Klippy shutdown: Timeout on wait for 'tmcuart_response' HOT 5
- How do you connect the StealthBurner LEDs to Huvud 0.61? HOT 1
- STEP file of board assembly HOT 2
- 3 axis version
- POS files for v0.62 not correct HOT 2
- Future design iteration suggestion - Angled Pin Header
- Timeout on wait for 'tmcuart_response' response
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