Doubts about Fysetc H36

General Discussion
1

Basic Information:

Printer Model: RatRig Vcore 31
MCU / Printerboard: Octopus Pro
Host / SBC rPi4 +
klippy.log (143.9 KB)
Ebb42
klippy.log

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Hi,

Not an issue

After the problems I’m having, I think the temperature is too hot where I live…

I want to try the Fysetc H36 Canboard… which is advertised as being resistant to high temperatures, but only if connected via CANBUS.

I’ve read something on their wiki, and it says it doesn’t need a bootloader…

And here’s the question.

If the bootloader (Katapult) isn’t installed, can updates be installed while connected via CANBUS and/or USB?

…

2

I fear you are right. Your “chamber: temp=135.2” is way too high. Have a look on the marking of your STMG0B1T3 on your Fysetc H36 Canboard.

Then you can check the maximum allowed temperature of your STMG0B1T3. I guess it is just 85°C? https://www.google.com/url?sa=t&source=web&rct=j&opi=89978449&url=https://www.st.com/resource/en/datasheet/stm32g0b1cc.pdf&ved=2ahUKEwjpzuCA6I-OAxUyIhAIHT_3N7cQFnoECBcQAQ&usg=AOvVaw3d2_TuvznSas9z5dr8SFOA

I think it’s amazing, that your STMG0B1T3 just didn’t die! Must be a good one from closer to the middle of the wafer.

3D printing boards use always the cheapest ICs. That means the lowest temperature grade.

The maximum temperature grade of your STMG0B1T3 goes up to 125°C operating temperature.Still a long way too to go to 135°C! Sorry.

I have no good idea how to cool a 3D chamber down totally closed.

Community, any ideas?

3

Ignore that sensor; I connected a thermistor to a free port on the EBB42, just to test… For reference. But I’ve already been told in the photo that that board doesn’t support a thermistor… it’s a reference value. The temperature isn’t real, and by quite a bit…

4

I’m not sure, why you are starting yet another topic on the same issue.

Just pushing in some arbitrary board with HT in its name will quite likely not solve your issue, when it is not even known or clear what the issue actually is.

Adding logs with faulty temperature readings is also not exactly fostering a clear and targeted search for solutions.

Some pointer have been already given here: Step loss by heat - #4 by Sineos

5

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