#MCU 'EBB' shutdown: Thermocouple reader fault

37 messages · Page 1 of 1 (latest)

warped maple
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You replaced your canbus interface? Or you replaced your toolhead board

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I'd check if the dip switches on the toolhead board are set correctly

proud escarp
warped maple
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So if the dips are right, I don't have much choice but to believe the error: aka, id think there's a bad connection on the pt1000 wiring

proud escarp
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Does anyone have suggestions or have dealt with this? I hope the board itself isn't bad. This will my 3rd board that has arrived with an issue.

warped maple
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Did you meter it?

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Did you make sure the connections are good ?

proud escarp
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It's plugged in correctly , and believe the connection is good.

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How do I meter it?

warped maple
warped maple
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Expected reading is slightly below 1000 ohm

proud escarp
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Is it only a pt1000 issue?

warped maple
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(At room temperature)

warped maple
proud escarp
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I've also got a new sensor and it's shows the same error.

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Is the board itself bad?

warped maple
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No, your wiring is bad

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(Probably)

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Can you take a picture?

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Now yes, that's a little cynical of me

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But until I see that photo, and you get some meter readings, it's pretty much going to be my assumption

proud escarp
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Am I checking the resistance for the pt1000 or the 2 pins in the board?

warped maple
arctic arrow
# proud escarp

I would just pull the thermisor values directly from the thermistor pinout on your MCB and not use the MAX sensor, from my knowledge it's only good for high temp printing so like 400+ i think

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that's what I did for my rapido setup with ebb36 with the MAX sensor

hallow steppe
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By changing it you are just avoiding the problem

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No reason to just lose a entire port if you don't have to :p

proud escarp
warped maple
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That's a 104nt thermistor

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And I think you need to check your units, it's probably reading 136 K 😛