SoliForum - 3D Printing Community — Da vinci load filament check

Re: Da vinci load filament check

null@example.com (tryersol) — Fri, 13 Jun 2014 21:32:42 +0000

I think the parts in green can be done directly via gcode only, and can be standardised/hardwired:

- Optical sensor detects filament has finished.
- Continues print untill filament is pulled half way into the hotend. (This to give room for the new filament to be fed in)
- Pauses print, raises extruder 20mm.
- Sets hotend temp to 0
- Sounds buzzer.
- New filament is fed in
- Sets hotend temp to 220
- It extrudes 30mm of filament (which you have to manually clean away)
- Extruder drops 20mm, and resumes printing.

But yes, the crucial part would be the detection, which would cause the gcode to run.

About the DaVinci using the sensor during a print, when I was on firmware A, I tested it, by snipping the filament off during a print. It just kept on printing after the filament ran through. I havent tested it on current firmwares, though

Re: Da vinci load filament check

null@example.com (Ovrclck350) — Fri, 13 Jun 2014 18:01:29 +0000

I think tha'ts probably a bit much to ask trying to write firmware for. BUT, I wonder with the XYZware firmware what happens in the middle of a print when it no longer "sees" filament.....or if it's only even looked at during the loading procedure.

Re: Da vinci load filament check

null@example.com (joshj) — Fri, 13 Jun 2014 15:23:49 +0000

That is totally feasible. I don't have the time, or know-how, or time to acquire the know-how to do so though.

Re: Da vinci load filament check

null@example.com (tryersol) — Fri, 13 Jun 2014 09:34:57 +0000

I think the sensor could be used as a protective measure.

Lets say you have a 28 hour print going. And half way through, the filament snaps.

Once that last bit of filament feeds through the nozzle, there is no more coming through. that means the nozzle will keep being heated for 14 hours with nothing inside it. This will carbonize the traces of abs inside, and is very messy to clean up.

Couldnt something be implemented like this:

Re: Da vinci load filament check

null@example.com (joshj) — Thu, 12 Jun 2014 12:11:34 +0000

if your running repetier the optic filament checker is not even looked at.

Re: Da vinci load filament check

null@example.com (Ovrclck350) — Thu, 12 Jun 2014 12:01:42 +0000

Did you even read the posts above? There's an optical sensor. You can fool it.

Re: Da vinci load filament check

null@example.com (heidkampn1) — Thu, 12 Jun 2014 04:41:27 +0000

Wondering if this is just an xyz firmware issue. I'm running repetier, but I don't want to buy translucent filament if it won't work. Any incite guys?

Re: Da vinci load filament check

null@example.com (Rescueweasel) — Wed, 14 May 2014 17:27:05 +0000

I took care of this and created a tutorial with step by step instructions and photos. Worked great the forum will not allow me to post links in my messages but if you click on the link in my signature it will take you to the page.

Re: Da vinci load filament check

null@example.com (Pilatus12) — Wed, 14 May 2014 14:28:08 +0000

I used a piece of zip tie inserted beside the filament path. (I bent a 90 in the zip tie) then used electrical tape to keep it in place. see photos.

Re: Da vinci load filament check

null@example.com (ysb) — Wed, 14 May 2014 11:40:27 +0000

Rescueweasel wrote:

I tried to load translucent filament with a white filament cartridge loaded and it would not do it. Found this forum post which helped. Thank you!
I got the materials to make a reset device but since da vinci does not have translucent filament does not seem to be an option if its checking for the color.
Anyone have any luck printing with translucent and making it work?

the problem is just the 'transparancy' not the color , the system just check if there is some filament. it didn't see your translucent filament as the light of the optical sensor pass thru it... i bet that if you put a black strip in front of the optical sensor, your filament will be ok.. end of story.. my 2 cents

Re: Da vinci load filament check

null@example.com (Rescueweasel) — Wed, 14 May 2014 01:58:05 +0000

I tried to load translucent filament with a white filament cartridge loaded and it would not do it. Found this forum post which helped. Thank you!

I got the materials to make a reset device but since da vinci does not have translucent filament does not seem to be an option if its checking for the color.

Anyone have any luck printing with translucent and making it work?

Re: Da vinci load filament check

null@example.com (ysb) — Tue, 13 May 2014 17:22:25 +0000

http://voltivo.com/forum/davinci/15-fil … m-decoding

info..

This is from reversing both the FW and the Windows app.
00:xyzCode - 'Z'
01:material - 'A' for ABS
02-04:color
05-07:mdate - manufacture date ??
08-0b:total len
0c-0f:total len now, used to be remaining len in older fw
10-11:temp head
12-13:temp bed
14-15:mloc - manufacture location ??
16-17:dloc - distribution location ??
18-23:sn - serial number, zero padded for now
24-25: check digit - 0x0034 in LE format is the only one i've seen so far
Also it looks like since fw 1.1.I the printer remembers cartridges serial numbers and the corresponding smallest filament lengths. So every time you reset the filament counter you need to tweak the serial number as well, otherwise the printer will limit the filament output so your prints will break apart.

Re: Da vinci load filament check

null@example.com (Pilatus12) — Tue, 13 May 2014 00:53:42 +0000

Thanks for your efforts! Suspicions confirmed!

Re: Da vinci load filament check

null@example.com (Seichou) — Mon, 12 May 2014 19:23:03 +0000

yeah thats what i was thinking i put a piece of masking tape around the black peice before placing it back in and it did trick the machine. so its definately there. puttting some paint on the inside would probably work better.

Re: Da vinci load filament check

null@example.com (Ovrclck350) — Mon, 12 May 2014 19:00:11 +0000

I'd bet the black guide is an optical assembly: