Help configuring a non-Prusa thermistor (E3D PT100)
Hello everyone,
So I just finished my MMU2S upgrade from the MK3.(Ordered the wrong kit, had to wait for motors!)
I wanted to print with more materials so I installed an Ollson Ruby and a new thermistor last year. I had no issues printing until I decided to upgrade to the MMU. I installed Slic3r Prusa Edition, and updated the FW on both the Rambo board and the MMU2 board to the latest versions. Because I have a modified thermistor I figured I would upload the modified code the same way I did last time (linked at the bottom to the forum post). Once I updated, the z axis (hotend) crashes into the heat bed.
Has anyone else experienced any difficulty with a non Prusa thermistor? Or any solutions to make it work?
I made a forum post figuring out how the FW works with the variants ETC to make the amplifier work:
https://forum.prusa3d.com/forum/original-prusa-i3-mk3s-mk3-user-mods-octoprint-enclosures-nozzles-.../e3d-thermistor-mod-question.../
RE: Help configuring a non-Prusa thermistor (E3D PT100)
There is a lot that can be wrong here, but first off all I need to know what you were doing when it crashed. In the meantime, try checking this
HW: You might have put the P.I.N.D.A. a bit too high from the buildplate. Remember to align it propperly.
SW: There is A LOT of bugs with the sw. Try looking trough the issues there and see if you can find something similar. I found these:
RE: Help configuring a non-Prusa thermistor (E3D PT100)
Hey thanks for the reply,
So i should go into more detail, I successfully updated both the Rambo fimware aswell as the MMU2S board with the sheep with Prusa SE.
The printer boots up fine and everything checks out accept the thermistor upgrade(Its on and working at 145 degrees which is the wrong table). I need to re flash the firmware again for this.
I do not know how to deconstuct the hex file so i used the source code and the latest arduino IDE.
https://github.com/prusa3d/Prusa-Firmware/releases/tag/v3.7.0
I renamed the 1_75mm_mk3S-EINSy10a-E3Dv6full.h file in the variants folder to Configuration_prusa.h of coarse and copy/paste in the FW folder.
All i modified in the Configuration_prusa.h file was #define E3D_PT100_EXTRUDER_WITH_AMP So it would make my AMP function in the correct range.
I have the right drivers installed for the RAMbo and its connected correctly in the Arduino IDE.
With all that said, I flash the firmware onto the rambo, As soon as the firmware is finished the original prusa slogan pops up on the screen for a second and then the screen flickers and goes completely blue and the x axis starts moving down slowly on its own eventually crashing into the heat bed. (My pour Ruby D;)
I am scratching my head!
RE: Help configuring a non-Prusa thermistor (E3D PT100)
A couple typos and i ran out of time to edit!
I meant to say Slic3r PE and i meant to say Z axis not X axis
RE: Help configuring a non-Prusa thermistor (E3D PT100)
Ok!
So I have no idea how this works, nor what I'm doing here. But as a developer I can try to propose theories.
The first thing I'm thinking of is that the installer does some auto-magic. So if you're able do create hex file that might be better. So I cloned the repo, installed some software, and noticed there is no configuration_prusa.h
Did you use the "Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h"?
I was able to create a hex, not sure if correct though, do at own risk, and follow guide on github/readme
So to be able to make the hex I did:
- git clone the project
- change file "Firmware/variants/1_75mm_MK3S-EINSy10a-E3Dv6full.h"
- Use PF-build.sh (this will make the Configuration_prusa.h for you)
- Check the new hex file