calibrate PTFE tube length with firmware 3.13 / 3.01
Hi all
updated my MMU2S to newest firmware and recognised, that there is a new loading procedure for the filament. it works well, but as I have a longer PTFE tube to the extruder, it the filament stops 20cm before the extruder and then goes slowly until it hits the infrared sensor.
In the previous software versions, it was possible to train the MMU to a longer PTFE tube ( https://help.prusa3d.com/de/guide/wartungsmenu-kalibrierung-einzelner-filamente_86376)
with the new firmware that does not work anymore.
Is there another way to calibrate the length of the tube?
Additional: since the upgrade the Octoprint plugin "Prusa MMU2 Select Filament (1.0.7)" does not work anymore. If somebody has a clue, if that can be corrected, please post it here.
Thank you
Wohlfeil
RE: calibrate PTFE tube length with firmware 3.13 / 3.01
I believe the latest firmware for the MMU, has A new persistent register 0x22 to address varying bowden tube lengths between the MMU and the extruder the value stored should be :16bit bowden length in millimeters (it is really the length of the PTFE tube, please do not set the distance from the old FW 1.0.6).Valid range 341 - 1000mm, should be enough even for very long PTFE tubes.
AS advised in the Guide below,
Use a program like Putty or Arduino IDE. Using Pronterface might cause damage to your MMU.
https://help.prusa3d.com/article/registers-mmu-mmu3_511780
regards Joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK
RE: calibrate PTFE tube length with firmware 3.13 / 3.01
Hi Joan
Thank you for your reply.
Tried to connect to the MMU via Putty, but no success. The com is visible in windows device manager, I can connect to it via putty, but cannot write into the terminal.
If I connect to the Printer instead of the MMU, I get a serial connection, but the terminal is constantly printing out MMU messages (see below a couple of them...
Recv: echo:MMU2:>Q0*ea. Recv: echo:MMU2:<X0 F0*87. Recv: echo:MMU2:>R8*81. Recv: echo:MMU2:<R8 A0*8d. Recv: echo:MMU2:>R1b*9e. Recv: echo:MMU2:<R1b A5*29. Recv: echo:MMU2:>R1c*88. Recv: echo:MMU2:<R1c A5*f6. Recv: echo:MMU2:>R4*7b. Recv: echo:MMU2:<R4 A8*ce. Recv: echo:MMU2:>R1a*f5. Recv: echo:MMU2:<R1a A0*41. Recv: echo:MMU2:>Q0*ea. Recv: echo:MMU2:<X0 F0*87. Recv: echo:MMU2:>R8*81. Recv: echo:MMU2:<R8 A0*8d. Recv: echo:MMU2:>R1b*9e. Recv: echo:MMU2:<R1b A5*29. Recv: echo:MMU2:>R1c*88. Recv: echo:MMU2:<R1c A5*f6. Recv: echo:MMU2:>R4*7b. Recv: echo:MMU2:<R4 A8*ce. Recv: echo:MMU2:>R1a*f5. Recv: echo:MMU2:<R1a A0*41.
Is there any hint if I need to connect to the MMU directly of to the printer?
Are there any connection details?
I used 115200, no parity but was not successful...
Thank you
RE: calibrate PTFE tube length with firmware 3.13 / 3.01
Unfortunately, I have never changed the registers,
regards joan
I try to make safe suggestions,You should understand the context and ensure you are happy that they are safe before attempting to apply my suggestions, what you do, is YOUR responsibility. Location Halifax UK