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Is there g code in Marlin to change thermistor type?  

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J Michael Pinc
(@j-michael-pinc)
Active Member
Is there g code in Marlin to change thermistor type?

So I was changing a nozzle on my MK3S, wasn't careful and pulled the wire right out of the hotend thermistor. The only cartridge thermistors I have are the ones with the quick release, which unfortunately has the molex connector in just the right (wrong?) place to either screw up the x axis homing, keep the tip of the hotend from reaching the bed or, in general, just be in the way, so I can't use them.
However, I do have another V6 cartridge compatible thermistor (calls itself a HT-NTC100K thermistor) and I asked their tech support what option to choose. They said 1, 11 or 13 would work, and I'll tentatively take them at their word. My question is, is there a g-code sequence for changing the thermistor type so I don't have to compile Prusa/Marlin? I know on my MP Mini Select there's M561 command that lets you change thermistor type, but all the google searches I've done seem to be inconclusive about Marlin having any such tricks. Is there an easy (i.e. non-compiling) way to change my thermistor type that anyone knows of? 

Respondido : 17/05/2019 8:09 am
Vojtěch
(@vojtech)
Honorable Member
RE: Is there g code in Marlin to change thermistor type?

On the Prusa you need to recompile and reflash the firmware. The settings are in 

Prusa-Firmware/Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h

Just look for 'THERMISTORS SETTINGS'.

The git repository is at https://github.com/prusa3d/Prusa-Firmware.git

Compile instructions are in the git repository.

Respondido : 17/05/2019 8:22 am
J Michael Pinc
(@j-michael-pinc)
Active Member
Topic starter answered:
RE: Is there g code in Marlin to change thermistor type?

Are you sure I should be using 1_75mm_MK3S-EINSy10a-E3Dv6full.h? I've got an EINSy 1.1.

Respondido : 17/05/2019 9:00 pm
Vojtěch
(@vojtech)
Honorable Member
RE: Is there g code in Marlin to change thermistor type?

There is no -EINSY11- variant for the MK3S, I suppose they're identical from the firmware point of view.

Respondido : 17/05/2019 9:02 pm
J Michael Pinc
(@j-michael-pinc)
Active Member
Topic starter answered:
RE: Is there g code in Marlin to change thermistor type?

I'll give it a try tomorrow and let you know how it goes.

Respondido : 19/05/2019 7:07 am
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