Sending E-step M92, respons: ok P15 B3

What is the problem?

On a Vivedino T-rex trying to calibrate E-steps. Sending M92 to get the respons what values is set, but get only "ok P15 B3". It extrudes 1.41mm less than it should and to my knowledge i need to have the original value to be able to change this.

I know it's underextruding, but don't know how to fix it. Please help anyone!!

What did you already try to solve it?

I have Googled a lot on this matter but found nothing I think apply to this problem.

Complete Logs

octoprint.log, serial.log or output on terminal tab at a minimum, browser error console if UI issue ... no logs, no support! Not log excerpts, complete logs.)

2020-08-16 14:52:59,512 - Recv: T:22.73 /0.00 B:23.44 /0.00 T0:22.73 /0.00 T1:23.26 /0.00 @:0 B@:0 @0:0 @1:0
2020-08-16 14:52:59,592 - Recv: Not SD printing
2020-08-16 14:53:00,174 - Send: M92
2020-08-16 14:53:00,183 - Recv: ok P15 B3
2020-08-16 14:53:00,583 - Recv: Not SD printing
2020-08-16 14:53:01,511 - Recv: T:22.70 /0.00 B:23.41 /0.00 T0:22.70 /0.00 T1:23.30 /0.00 @:0 B@:0 @0:0 @1:0

Additional information about your setup

OctoPrint version, OctoPi version, printer, firmware, browser, operating system, ... as much data as possible

Octoprint 1.4.0,
Raspberry Pi 4,
Vivedino T-rex 3,
Chrome browser,

You should use M92 with some parameters:

@Ewald_Ikemann, it says at this page "RepRapFirmware will report the current steps/mm if you send M92 without any parameters". Is that different from Marlin?

Yes, Vivedino T-Rex uses Marlin

In marlin you can check the current steps with M503

1 Like

Aaaah, M503 gave me a lot of information including: "Recv: echo: M92 X80.00 Y80.00 Z800.00 E93.00".

Thanx a lot fellow 3D nerds!!! :slight_smile:

So, now that I know the original value and want to edit this, I suppose I will have to use M503 with some parameters?

For changing the value you use M92 Ex.xx

M92 Exx.xx gave the same response as before: "Send: M92 E94.33
Recv: ok P15 B3", but the value was set to the desired one!!!!!
Great, I am very happy you guys could help me with this so quickly! Maybe I'll be back with other questions though :smiley:

Thank you!!