C2 Filament Run-Out Detection

Do you have the filament going through the run-out sensor? If so then yes... the sensor is bad or the wire broken/disconnected.


Having the filament NOT go through the sensor is ... difficult, however I have to ask

 

If you want to check that the wire is connected to the control board I will go find a picture for you.

You have to be willing to dig into it a little bit and I can understand NOT wanting to.

 

You can sort of see the board in this pic:



The two wires (red/black) that re going to the GPIO header on the raspberry pi

 

Also make sure your filament is run through tjis way:

 

I say that is because if somehow yours was assembled backwards (on the wrong side) there is no laser over there

 

Nope. the board that says ROBO is not the raspberry pi -- that is their controller, the Raspberry Pi is the one on the lower left. There is a red/black wire pair that goes to the last two pins on the I/O header for it -- those are the ones for the run-out sensor (a laser LED and an optical pickup). It is difficult to see in that picture (sorry). If you are connected to the correct side on the back then it is almost certainly a bad pickup or a bad wire. Give Robo a shout and have them handle it You could dismantle the mounting block where the filament runs in and see if everything looks OK in there and if you were desperate to print you can probably jumper the connection there and it would always show filament as "inserted" but try getting ahold of Robo tech support and see about them replacing the broken bits.

 

I assumed they would be. It would be touch for them to be left off
Only possible issue is a bad connection inside the black plastic port that holds the sensor or the wire disconnected in there or just a dead sensor.

 

I went and looked through my tear-down/rebuild for the dual extrusion thread

http://community.robo3d.com/index.php?threads/dual-extrusion-mod-for-c2.17686/

to see if I had a picture of the inside of that sensor rig, but sorry .. I don't. Kind of a pain to remove since the screws are reached from inside the top of the printer...

 

Only if you tear into it and only for the really simple problems. Give them a ring and see what they suggest OR if you bought the printer from Amazon or a third party with a good return policy -- return it and get a new one.

They should make it right for you, but waste no time before getting them on the horn

At this point it appears to be a bad sensor and that you can't do one your own.

 

...

Same advice

There is nothing you can really easily do to fix this as it is probably a defective sensor. Since the C2/R2 have gone more mainstream in terms of how the units are built there is less that a maker can do to fiddle with them. Could you go buy parts somewhere and fix it? Sure, but with it under warranty that is a losing game.

Even just removing the black cover for the filament sensor is not fun given how the printer is assembled and how the screws are mounted for it.

 

You should call them and insist on them booking the level 2 tech since the website is non-functional.
Regardless of how you bought it they need to support it.

 

@mark tomlinson can you jumper it out on the board?ie if NO unplug it...if NC jumper across?

 

Yes, you could. I am not sure if it is N/O or N/C -- I can check later today -- but either way you could obviously jump around it and disable the run-out sensor. While that is fine as a short-term fix it is not a real fix and Robo needs to address that.