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TheZeroBeast / TZB-MMU2S-Firmware

Firmware for Original Prusa MMU2 by Robert McKenzie
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Filament selector gets stuck #59

Closed joeycerone closed 5 years ago

joeycerone commented 5 years ago

Running MMU 2.1.4 & MK3 5.0.3

My selector seems to get stuck occasionally when switching between filaments. Seems like it must be running into some resistance but I'm not sure where. Rods and POM nut look good, I've removed the blade cutter. I've loosened and tightening everything evenly and not too tight. Is there any way to make this less sensitive?

madxbgt commented 5 years ago

I found some ptfe superlube on the rods helped my issue alot with that problem , and reducing the MAX_SPEED_SEL to around 5000 in config.h helped also.

joeycerone commented 5 years ago

Thank you!! I'll grab some superlube tomorrow. As far as reducing the speed, I'm pretty new to all this, I could modify that file but I don't know how to generate the hex. Is that something that you could help me out with or post here?

madxbgt commented 5 years ago

I am unsure how to create the hex file, but I was able to upload an update to the MMU with the Arduino IDE software.

TheZeroBeast commented 5 years ago

nice work madxbgt, let me know how you go joeyerone.

Panayiotis-git commented 5 years ago

I suggest to not use any lubricant at these rods. It is going to be a mess. It is enough to change the speed to 5000 or less. I've changed the parameter and it is working fine since the first release of the firmware.

The whole change filament process takes a lot of time. The gain of driving the selector to a high speed is measured in msecs. And it also puts a lot of stress to the plastic components.

TheZeroBeast commented 5 years ago

Yeah, I dropped it a bit on this release, might drop it more if it'll make it more accessible, like you side, it doesn't save much time going quick. So, 5000 is working good for yourself at the moment?

Panayiotis-git commented 5 years ago

Yes, no problem.

TheZeroBeast commented 5 years ago

Cool 👍

joeycerone commented 5 years ago

I inspected the code a bit last night and saw that it ran at 3000 in stealth mode. I think... I changed my print to stealth mode and it finished without any issues.

joeycerone commented 5 years ago

I am unsure how to create the hex file, but I was able to upload an update to the MMU with the Arduino IDE software.

joeycerone commented 5 years ago

I am unsure how to create the hex file, but I was able to upload an update to the MMU with the Arduino IDE software.

Ok, I'm trying to use the arduino software now to do this. I downloaded all the source files but I'm not really sure what to do next. The instructions on the readme say something about "version.h.in" but I can't find that file anywhere.

Can you give me a quick walk through on how to recompile with Arduino? I've used it once before so I'm a little familiar with it. I got the prusa board installed ok.

Also using a mac, but I'm guessing that shouldn't matter.

TheZeroBeast commented 5 years ago

Hey mate,

Not sure how you got into stealth mode as my firmware doesn’t have much of not any of the methods implemented for it but I’d try changing it to 5000, this is what I’ll be trailing as the new default.

To make a hex file you have to open it first in a text editor and add the following line to the top as per readme file.

; device = mm-control

joeycerone commented 5 years ago

Interesting, I just went through the menu like usual. The MK3 is definitely in stealth mode, maybe I've just been lucky on the selector since then. Unfortunately I did have the selector stick overnight so I'd like to figure out how to reduce this and recompile it on my own.

I'm just trying to recompile your files and I'm getting this error:

Arduino: 1.8.8 (Mac OS X), Board: "Arduino/Genuino Zero (Programming Port)"

In file included from sketch/Buttons.cpp:9:0: main.h:16:21: error: avr/wdt.h: No such file or directory

include <avr/wdt.h>

                 ^

compilation terminated. exit status 1 avr/wdt.h: No such file or directory

This report would have more information with "Show verbose output during compilation" option enabled in File -> Preferences.

AbeFM commented 5 years ago

The board is NOT an Arduino Zero. image

joeycerone commented 5 years ago

Thanks Abe! Just figured this out and came back to post an update. Looks like it's verifying correctly now. As soon as this finishes printing I'll try adjusting the value and seeing if I can get it running!

TheZeroBeast commented 5 years ago

Nice work, yeah, that’s the bird 👍👌

Stealth in MK3 is fine, I thought we were talking about the mmu2 😂🤦‍♂️

joeycerone commented 5 years ago

What is the stock value for the selector speed?

TheZeroBeast commented 5 years ago

Hard to say, the speeds are done differently. Mine is steps per sec and they use a delay amount between steps.