Heater (extruder) not heating at expected rate | VORONDesign | Page 1

coarse crag Oct 20, 2024, 11:01 AM

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Standart Revo 24V 40W hotend btw if that helps

gilded heath Oct 20, 2024, 11:42 AM

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have you got the [extruder] thermistor sensor type correct? it should be sensor_type: ATC Semitec 104NT-4-R025H42G for a revo

coarse crag Oct 20, 2024, 12:01 PM

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from my config: sensor_type: ATC Semitec 104NT-4-R025H42G

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it was running a revo beforehand. i just did a direct replacement

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i just started checking the cables for continuity and there is continuity between the octopus and the toolhead board for the 24V pins but:

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Depending in which terminal screw I measure to which there ist differences in resistance:

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measureing from octupus red terminal to any on the toolhead board ist full deflection

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whereas black on octopus to and on the toolhead board is about 1/3 deflection...

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is that correct or is that possibly a pointer towards the problem?

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sorry for my noobiness... i just dont deal with electronics that much...

gilded heath Oct 20, 2024, 12:31 PM

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measuring resistance is not likely to give us any specific clues. most likely in this case there is a bad crimp somewhere in the thermistor wiring path.

coarse crag Oct 20, 2024, 12:47 PM

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the termistor accurately reads the temp. just put a heatgun to its and it increased immediately. its the heater thats not heating

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thats why i checked the 24V terminals on the breakout board and octopus. and found the resistance differences. might it just be a broken cable harness?

gilded heath Oct 20, 2024, 12:56 PM

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very possible, yes

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the negative temperature was what made me suspect the thermistor though

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unless your printer is in a freezer 😅

coarse crag Oct 20, 2024, 12:58 PM

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i wrote ~23°C not -23°C 😄

gilded heath Oct 20, 2024, 1:00 PM

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i need to put my glasses on

coarse crag Oct 20, 2024, 1:05 PM

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ok just a quick reality check:

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is there a fuse on the breakout board?

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and i should getcontinuity from the HEO pin on the microfit connector to the terminal on the board ?

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gilded heath Oct 20, 2024, 1:11 PM

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no fuse on these PCBs, no

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and yes

coarse crag Oct 20, 2024, 1:13 PM

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ok. i do. so its not the board or the terminakl 🙂 so it gotta be the cable..

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I think I found the problem...

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Cable got eaten by cable chain on X axis

naive drift Oct 21, 2024, 9:28 PM

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coarse crag

i assume this solved this post? if so, please add the "solved" tag to it so people know 🙂

naive drift Nov 16, 2024, 5:36 PM

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coarse crag

checking in again, seems like u didnt had time yet to response or u didnt saw the message 🙂

#Heater (extruder) not heating at expected rate