Hi
The dual right extruder is not lifted up.
The dual extruder has two blue lights, one for the left extruder and one for the right extruder.
When powering up only the light for the left extruder is on, not the right one as it should be.
When doing go to “Home” the right extruder step motor is not lifting the extruder, but doing the opposite lowering the extruder and making a terrible sound. Whatever I do of calibration, the right extruder is never lifted. All connections are OK and the wire nut is in ok position.
I have done a door and filament end switch upgrade of the dual extruder.
I am new to this forum, but your discussions have already helped me many times.
Now I have a problem that I can’t find an answer to, and that might be of interest to others to shed light on.
Hope some of you can give some advice.
Then I have some of the answer. The blue LEDs are connected to the proximity switches of the extruders. When the extruders are down, they should light up. My problem is that the right LED does not light up when the right extruder is down. Thus, the software thinks that the right extruder is already up and does not give any message that the extruder should be pulled up.
I tested the proximity switch by dismantling it and placing a metal disc between the sensors. Every time the metal disc was placed between the sensors, the right LED lit up. In other words, the proximity switch is working. The big question now is how the proximity switch or the extruder can be adjusted so that proximity is registered and the LED lights up.
Sorry, maybe i am wrong, but the head just have one proximity switch which is the lowest part of the extruder. you highlight the filament run out sensor. Is there any filament loaded on the right extruder?
Many thanks for the good comments and suggestions.
I have found the cause of the problem and solved it.
The sensor itself on the proximity switch was not mounted perpendicularly from Snapmaker.
This small angle was enough for the sensor to be too far away from the extruder’s lower position.
See Fig. 1
By heating the pcb I was able to fix the proximity switch.
The sensor is now completely perpendicularly. Fig. 2
To be absolutely sure that the lower position was registered, I angled the proximity switch. Fig. 3
Now it works as it should. Both lights light up when the extruders are in the lower position and the problems with the right extruder not going up are gone.
Hey guys. I can add some information.
I guess there are optic sensors like optocoplers for the “end position” for each extruder but could be proximity switches as well.
This is used at the Artisan for detecting pulled up extruders.
The right extruder is moving (not the right) and lifting up and down.
Maybe you blocked some of the lifting mechanism? As you can see in the instructions provided by @Hauke the brass nut has to be assembled in the middle, maybe this causes your problem…
