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PID autotune failed! Bad extruder number

rizulthkr

PID autotune failed! Bad extruder number
April 27, 2017 03:06AM

Registered: 8 years ago
Posts: 27

I cannot run the pid autotune for my bed. I have tried uploading different version of marlin but still getting the same error. For PID autotune i entered M303 E-1 S90 C8. please advice

Edited 2 time(s). Last edit at 04/27/2017 03:17AM by rizulthkr.

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Dust

Re: PID autotune failed! Bad extruder number
April 27, 2017 03:14AM

Admin
Registered: 13 years ago
Posts: 6,998

What command are you trying. What type of bed?

But since the error says "Bad extruder number" Im guessing you have the syntax wrong...

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rizulthkr

Re: PID autotune failed! Bad extruder number
April 27, 2017 03:17AM

Registered: 8 years ago
Posts: 27

M303 E-1 S90 C8

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Dust

Re: PID autotune failed! Bad extruder number
April 27, 2017 03:36AM

Admin
Registered: 13 years ago
Posts: 6,998

In your configuration.h is #define PIDTEMPBED set?
(ie no // in front of it)

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rizulthkr

Re: PID autotune failed! Bad extruder number
April 27, 2017 04:03AM

Registered: 8 years ago
Posts: 27

yes its un commented . i.e there is no // in front of it

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Dust

Re: PID autotune failed! Bad extruder number
April 27, 2017 04:13AM

Admin
Registered: 13 years ago
Posts: 6,998

does you bed read room temperature when at room temp? (or close enough)

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rizulthkr

Re: PID autotune failed! Bad extruder number
April 27, 2017 04:51AM

Registered: 8 years ago
Posts: 27

yes extruder and Bed have the same reading

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Srek

Re: PID autotune failed! Bad extruder number
April 27, 2017 05:21AM

Registered: 12 years ago
Posts: 2,470

In that case double check the assigned pins for the Bed and Extruder thermistors

[www.bonkers.de]
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mob79

Re: PID autotune failed! Bad extruder number
March 12, 2019 07:55PM

Registered: 5 years ago
Posts: 2

I finally got it to work, you have to heat your bed withing 10 degrees of your target temperature then run the pid autotune, then it will work, as long as you have the pid autotune enabled in your marlin code and that other option below it commented out you are good to go, try that and let me know if it worked for you, if you haven't already figured it out.

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bryanandaimee

Re: PID autotune failed! Bad extruder number
March 30, 2019 04:18PM

Registered: 13 years ago
Posts: 632

I don't think I ever had to preheat my bed when autotuning. There is a timeout, so if your bed is very slow heating that might be why it's failing. A better solution might be to set the timeout value to something larger.

Retire early, retire often. [HalfLifeDad.com]

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Plizze

Re: PID autotune failed! Bad extruder number
April 25, 2022 08:38AM

Registered: 3 years ago
Posts: 1

I can't find a solution to this

Edited 2 time(s). Last edit at 04/25/2022 08:52AM by Plizze.

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MCcarman

Re: PID autotune failed! Bad extruder number
April 26, 2022 09:46AM

Registered: 8 years ago
Posts: 413

You could do M503 to see what it thinks is there.
Otherwise it seems its either a miss configuration or M303 E-1 S90 C8 is not exactly what its getting. Is it getting the "-" as a negative symbol or a dash? Any weird keyboard translation errors ?