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Prusa i3 - Rumba board - Diamond hotend

Posted by DKLeader 
Prusa i3 - Rumba board - Diamond hotend
October 11, 2017 01:04PM

My problem is that I cannot get my step motors activated / running. This being xyz and extruders.
Seems they are not getting energized / signal.

Following is working:
Fans, hotend and heattbed.
Sending M119 shows that endstops are working and set correct.

I have the following setup :
A Hictop Prusa i3
It has been modified with a Rumba board and Diamond hotend.
I have installed Marlin software using Arduino 1.8.4
Marlin firmware downloaded from [reprap.org]
In "Confiiguration.h" I have selected the correct board.
Disabled the endstops not used.

I have attached a few pictures from the setup and my configuration.h.

Hope someone could give me some ideas on what could be testet.

Best Regards
open | download - Photo-2017-10-11-21-48-45_4985 (Small).JPG (100.1 KB)
open | download - Photo-2017-10-11-21-48-12_4984 (Small).JPG (95.1 KB)
open | download - Photo-2017-10-11-21-47-38_4983 (Small).JPG (71.9 KB)
open | download - Photo-2017-10-11-20-03-32_4982 (Small).JPG (96.2 KB)
open | download - Photo-2017-10-11-20-03-15_4981 (Small).JPG (79.4 KB)
open | download - Photo-2017-10-11-20-02-55_4980 (Small).JPG (62.6 KB)
open | download - Configuration.h (35.6 KB)
Re: Prusa i3 - Rumba board - Diamond hotend
October 11, 2017 03:11PM
Marlin has a safety interlock to prevent cold extrusion, so you have to heat up your hot-end above 170 degrees.

I don't think that applies to the XYZ motors though. Fans and hotend working means your 12V supply is good. Are your stepper drivers plugged in the right way round? When the motors are on but not moving, are they easy to move? You should see 12V across one or other pair of wires to each stepper when energised but stopped.
Re: Prusa i3 - Rumba board - Diamond hotend
October 14, 2017 06:32AM
I have tried with temp above 170 as knew about this interlock - this did not change the situation.

The stepper drivers are turned in the correct direction.
The motors can easily be moved even when they have received "on" signal.

Will try to measure if there is 12 V on one or the other pair of wires.

Best regards
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