Voron 2.4 build MCU 'EBBCan' shutdown: Thermocouple reader fault

Basic Information:

Printer Model: Voron 2.4 (Magic Phoenix Kit)
MCU / Printerboard: btt M8P v2 / ebb sb2240
klippy.log

Fill out above information and in all cases attach your klippy.log file (use zip to compress it, if too big). Pasting your printer.cfg is not needed
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Describe your issue:

I’m building a Voron for the first and have been stuck with this problem for quite a while now. I am building a Magic Phoenix voron 2.4 kit, and I think I’m running into an issue listed above or the MCU ‘mcu’ shutdown: ADC out of range message. I am using the Phaetus Rapido Plus 2 Hotend with the 104NT-4 not the PT1000.
I have tried numerous fixes mentioned in other post and forums with no luck. I have also and checked wiring for disconnects. I have attached a klippy log and printer.cfg file. If there are any recommendations a would greatly appreciate it.
klippy (9).log (5.5 MB)
printer (2).cfg (9.9 KB)

SInce we dont know what step you have done elsewhere, let start with some basic stuff I would try :

Have you tried connecting that temperature sensor directly to the mainboard to confirm you got a reading from that 104NT ?

Have you also tried to connect another thermistor to the Ebb, this will confirm the proper connection, point of connection, and config ?

Hey @Basslotus, encountered similar message with my EBB.

Root cause for my situation was wrong wiring due to my understanding being wrong.

Hope something here helps, shared some of the info I dug into at the time, and steps taken to investigate…

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Thank you for the Input I will give this a try!

The 104NT has the smaller connector to connect with the Ebb, so I’m unable to connect directly to mainboard. I have purchased a back up 104NT thinking it could possibly be the problem. When connecting it to the Ebb I receive the same message.

I suggest that you acquire some multicoloured dupont jumper for testing purpose

I think the trouble is actually that you have declared 2 time the temperature_sensor EBB_NTC PA2 and you have 2 sensor_type into the extruder section
:slight_smile:

look at your config on line :
image

Try commenting the first occurence :
image

And then remove the double occurence in the [extruder] section, by commenting the MAX31865 section (see picture)
You have 2 type of sensor_type declared into the extruder section

image

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Thanks, once removing those 2 instances it appeared to work with values shown for the various thermistors. Then the MCU ‘mcu’ shutdown: ADC out of range message returned.
klippy.log (5.3 MB)
printer.cfg (9.9 KB)

I’m wondering if you really have all those temperature_sensor installed on your printer ?

If not, remove (comment) all that are not being used (not connected)

image

You’re chasing the wrong thing here. Your extruder and EBB temps are reading fine. Your bed, build plate, and chamber sensors are all reading around -80 degrees. This implies you don’t have those sensors plugged in, or the wrong pins are defined for those sensors.

2 Likes

There was more than one thing to chase :slight_smile:

(now the extruder is OK)
image

I agree I think there are few problems contributing, thanks for the insight. I am also using the MPX Voron Full-size Bed Heater with the integrated NTC100K B3950 thermistor. I believe in the print cfg it is set to generic 3950 for senser type. Would that be part of the problem? I also don’t think a have a chamber temp sensor set up and have attempted to run with that section #.

The Bed sensor is defined inside the [heater_bed] section (like you already have)

I suggest commenting both buildplate and chamber sensor as shown bellow :

image

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It looks like that did the trick, it seems to start up without error now. thank you very much!

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