Second extruder not moving

DeJe

<font face="Arial, Verdana">We have two (electical) identical printers using Ardiuno Due and modified RAMPS 1.4.</font>

Firmware ist Repetier 0.92.9.

Setup is fine and is working but second extruder does not move, on both machines. All working I mean X/Y/Z is moving correctly, heat bed working, thermistors for all hotends plus bed are OK. Also first extruder is working fine.

I allready switched cables for extruders -> second motor running, first not. I also switch motor drivers -> second motor not working, first working. So I think hardware is OK.

I also did a M502, M500 but nothing changed. I noticed that for second extruder it's not even enabled. I can manually move it by hand.

Any help would be appreciated.

DeJe

OK, I found ... a bug in the firmware. ;)

In pins.h and motherboard type "401" (Arduino Due) ORIG_E1_ENABLE_PIN is defined as "40".

This is wrong and schould be "30".

I changed and second extruder is working as expected. :D

Thanks for reading.

PS: should I file a bug somewere?

Repetier

RAMPS is not officially supported as it is normally incompatible. So I wonder it is the only pin which was wrong. I know the original due author used it for his hacked board but is no official board.

Did you change anything pin related? If not I will change the pin so all similar hacks should work.

DeJe

Yes I know it's not officially supported. But it works great here cause the RAMPS is OK (for little money) for my HW and the due can handle the speed I need (CoreXY, dual extruder, Display, ...). :D

I downloaded the complete Package from the configuration page this weekend and this was the only pin I changed.

Thank you in advance.