MCU 'toolboard_t0' shutdown: ADC out of range | Rat Rig Community [Unofficial] | Page 1

vestal edge Feb 17, 2025, 5:48 PM

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First-time build here, using the parts from the default kit. I've seen other posts about this, and generally it seems that this issue is as a result of thermistor wires being incorrectly wired, incorrectly crimped, loose, etc.

Since I did crimp the wires as per the guide, I figured maybe this was the issue, and swapped out my hotend for one from my IDEX upgrade kit with the wires in the box (super long) to make the connection just to see if that helps. It seems the issue still perists. Any other ideas? Does the fan have to be connected to the board in order for the toolhead to speak to the system? I unplugged it for the time being because it runs at 100% speed and sounds like a tornado. Attached are pictures of my toolhead.

radiant zenithBOT Feb 17, 2025, 5:48 PM

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normal niche Feb 17, 2025, 6:28 PM

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Did you really follow the documentation?

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And bed thermistor is not the same as hotend. No point on swapping them

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vestal edge Feb 17, 2025, 6:53 PM

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I believe my image reflects this placement, does it not? I just noticed though my jumper was in the other slot though, swapping and testing to see if that does anything

vestal edge Feb 17, 2025, 6:53 PM

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normal niche And bed thermistor is not the same as hotend. No point on swapping them

I didn't swap the thermistor/hotend cables, I swapped the entire rapido v2 hotend with another fresh one, and then instead of crimping cables like in the guide, I tried this time to use the pre-crimped cables that come with the hotend, in case there was a bad wire job/crimp/thermistor

normal niche Feb 17, 2025, 6:54 PM

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vestal edge I didn't swap the thermistor/hotend cables, I swapped the entire rapido v2 hoten...

ok.

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then check the image, please 😉

vestal edge Feb 17, 2025, 6:59 PM

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I don't understand, are you saying my wiring is incorrect? Is it orange = thermistor, blue wires = hotend? (in the context of the diagram, in real life the colors are different)

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If so -- my wiring appears correct...

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Hot end = ferrule crimped wires. Thermistor = JST

normal niche Feb 17, 2025, 7:03 PM

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no problem with colors. But there is more info in there...

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jumper...

vestal edge Feb 17, 2025, 7:03 PM

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Correct, my jumper is in that slot

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Would it really not work without a jumper though?

normal niche Feb 17, 2025, 7:07 PM

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vestal edge Correct, my jumper is in that slot

no sir. it is not

normal niche Feb 17, 2025, 7:07 PM

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vestal edge Would it really not work without a jumper though?

Correct. Without the jumper you would need a different type of sensor

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your jumper is not in the correct place

vestal edge Feb 17, 2025, 7:07 PM

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normal niche no sir. it is not

It wasn't in the original picture I sent

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But in that message from earlier, I said I noticed it was in the wrong slot, so I swapped

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That's why I was confused, I think you missed this

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Testing now

normal niche Feb 17, 2025, 7:09 PM

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vestal edge That's why I was confused, I think you missed this

yes

vestal edge Feb 17, 2025, 7:23 PM

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Ah nice -- looks like that got rid of extruder issue, thanks!

Is 'heater bed' referring to the bed heater?

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(I don't have it plugged in, I thought you're supposed to have it unplugged for the first comissioning)

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Can I simply have the heater bed plugged into the octo board, but not wired up to the power supply and all that?

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Seems the answer is 'yes'! Thanks 🙂

#MCU 'toolboard_t0' shutdown: ADC out of range