Hi all. Is anyone else having errors with the filament runout sensor? 20 hours into this print job the filament runout sensor has started tripping every few minutes. There is plenty of filament left but so far I’ve had to go through the reload process, except I don’t have to touch the filament, just follow the prompts on the screen. Any solutions welcome!
Cheers
David
I was having same problems. No real solution yet other then disabling run-out detection every time you start you printer.
M412 S0
Filament Runout | Marlin Firmware (marlinfw.org)
Dual Extruder false run-out detection triggers - Snapmaker 2.0 - Snapmaker: where creation happens
What did support say?
https://snapmaker.formcrafts.com/support-ticket
Apparently the filament sensor is a known problem and they plan on supplying a more robust replacement.
Any updates/solutions on that? Today my Artisan started to act the same - every few minutes a filament runout though filament is there.
The repair kit for the dual extruder fixes this problem…
Be very careful when you install the runout sensor upgrade. There are tiny metal discs that are only secured in place when the sensor board has been screwed on and they’re easy to lose. Ask me how I know. I had to contact support, who just sent me a whole new repair kit free of charge within days. I need to get the second one installed now; in the interim, I’ve done the M412 S0 workaround.
One pet peeve about the upgrade: there are no written instructions. You have to watch a video, which I found to be very inefficient and probably contributed somewhat to my lost disc issue.
There is also a textual Version with few photos:
And for sure: when you disassemble such electronics: use a clean desk where you see when unexcepted parts fell off.
I know I’m a little late to the party, but I myself just dealt with this issue and thought I might shed some light on the situation for anyone else.
First off… what a piece of garbage limit switch. One of the smallest limits switches I’ve ever seen and the leaf/button, whatever you want to call it, is the tiniest, most brittle little piece of plastic. My guess, the plastic doesn’t hold up to the constant heat and cooling, eventually rendering it too brittle to hold up, and it just crumbles.
The wiki is very helpful, HOWEVER, you can do the first 5 steps, and then remove your sensor. No need to deal with all the extra hassle of removing motors and unplugging everything.
Back screws (4), Top screws (4), Pull out the top, unplug motors so you can fold the top board out of the way, use a long 1.5mm hex driver to get around the small motor in the center, and take out the one screw holding the sensor in place.
I knew my sensor was bad, so I was hoping I had a small enough switch to replace it with, and I do, however they all require too much force to activate. The sensor has a small metal cover that holds everything in place, if you remove this and the insides, you are left with a plastic box with no lid (empty switch housing), that has 2 big contact points inside. So I just dropped in a bit of solder to make permanent contact. IMO, it’s better than having to use the console to input M500, or whatever the code is to disable the sensor. I’ll be diligent about checking my filament levels until I get a replacement.
Hope someone finds this helpful!
I echo this sentiment. After I did the upgrade, I still had an issue with one of the runout sensors. It turned out that the plastic “button” on the switch had broken. Fortunately, since they sent me a whole new repair kit to replace that little disc, I had a spare sensor board.
^^ bot reply ^^
What repair kit?