Feed not working post upgrade

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Feed not working post upgrade

Postby sauger » Tue Mar 28, 2017 2:27 pm

Just upgraded from a dual nozzle J end to the E3d hotend. Updated the firmware as instructed. As far as i can tell, Machine's running okay except that i can't get the feed to work. Doesn't feed to print and it won't feed if i try to run the Purge sub.

Heating/main cooling fan/BL Touch all seem to be operating as normal (as far as i can tell), just the feed servo. (i haven't seen the continuous cooling fan run yet either, but i haven't run a full test with this feed issue).

As far as i can tell, i've hooked everything up alright (it was pre-built when i got it for the most part). Maybe a firmware setting i've missed?

many thanks for any help.
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Re: Feed not working post upgrade

Postby sauger » Wed Mar 29, 2017 9:09 am

Edit: Apparently, I'm just a silly person. The motor cables from the previous dual extruder got mixed up.

New problem is that the extruder motor seems to be running backwards. is this possibly a firmware issue? Using a calibration print from before the changeover that worked fine as is.

Also, does the continuous cooling fan (the little guy clipped onto the extruder) only run above a certain temp?

(still fishing through the firmware for settings on these things, but haven't built the confidence to change anything yet)
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Re: Feed not working post upgrade

Postby sauger » Thu Mar 30, 2017 9:31 am

OK. Found it in the firmware and reversed the motor.

It's in the configuration.h file. I just set the #define INVERT_E0_DIR line to true (was at false by default) in case anybody else needs to find it.
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