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Mendel 90 Extruder (feed) motor problem (youtube link)

Posted by caratzillion

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caratzillion

Mendel 90 Extruder (feed) motor problem (youtube link)
September 02, 2013 08:27PM

Registered: 13 years ago
Posts: 2

Can't seem to wrap my head around this problem.. the video explains it all i suppose! confused smiley

Thanks for any help!

[www.youtube.com]

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nophead

Re: Mendel 90 Extruder (feed) motor problem (youtube link)
September 03, 2013 03:21AM

Admin
Registered: 19 years ago
Posts: 7,883

If it does it with no filament loaded then the motor is not wired correctly. Most likely only one coil is connected.

[www.hydraraptor.blogspot.com]

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Jonny1983

Re: Mendel 90 Extruder (feed) motor problem (youtube link)
September 03, 2013 04:28AM

Registered: 13 years ago
Posts: 42

That does look like a wiring issue.
Simple way to check if you have a LED handy is to clip it to the the end of each pair of the motor separately. Then spin the motor by hand and see if the LED lights up. I'd guess that it's a problem on the extruder PCB soldering end.

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nophead

Re: Mendel 90 Extruder (feed) motor problem (youtube link)
September 03, 2013 05:34AM

Admin
Registered: 19 years ago
Posts: 7,883

The wiring is easy to test by measuring the resistance between the terminals at the Melzi end as described in the manual.

A few people have problems with the soldering on the PCB but the most common cause of faulty wiring is the IDC connector. I am not sure why but I have been using them for more than 30 years so it's hard for me to see them from a newbie's perspective.

[www.hydraraptor.blogspot.com]

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caratzillion

Re: Mendel 90 Extruder (feed) motor problem (youtube link)
September 16, 2013 08:40AM

Registered: 13 years ago
Posts: 2

Thanks for all the help guys, problem was indeed probably in the IDC connector (again) i have 4 wires going straight from the motor to the melzi and everything is fine
I think if i understand the IDC connector better i woulden't have had the problem in the first place! either way it works fine and the first prints are amazing! (just little green android men for now)