Are the instructions wrong for wiring the stepper motors?

[untitled86]

I try to read and follow instructions carefully. Assembly Instructions page 15, "4 – Install the Connectors on the Stepper Motors" says to wire pin 1 - red, pin 2 - blue, pin 3 - green and pin 4 - black. So that's what I did.

Now I'm ready to start calibrating so I sent the printer G28. And immediately my axes started going down (so I unplugged from wall).

According to the manual the hardware fix is to, "rewire the misbehaving stepper motors to switch the positions of the red and blue wires". WTF!? I followed the instructions.

Are the instructions wrong?

Also, the software fix for this is re-building firmware. I don't want to do that (right now). Can someone just upload the right firmware for me? I've got the Oynx bed, mine was a late Jan delivery of the Rostock Max if that matters.

[dbarrans]

No, the instructions aren't wrong. The firmware is. It's easy enough to fix in the firmware. You'll need to learn that anyway to put in your PID values for the hot end.

I wired my kit the same as yours, but my XYZ motors moved the right direction and the extruder moved backwards. Took only a few minutes to fix that. I guess I found a different Marlin version than you did.

- dan

[mhackney]

Stepper motor direction is a factor of 2 dimensions: 1) how it's wired and 2) what the software tells it to do. So, it sounds like the firmware you are using is not configured for the Rostock correctly. Seriously, the easy fix is to get a known good firmware or modify your firmware.

Read the build threads. Mine goes into detail and followed the manual. Use it to double check the manual if you think there are errors. In this case, I wired my steppers exactly like the manual, photographed and documented them in the thread, etc with no issues. There is a link in my thread to the firmware I used that was posted by another member here who has posted the link several times himself.

regards,
Michael

[Highcooley]

As far as I am informed, the motor wiring issue was corrected in the firmware on Jan 2nd (https://github.com/johnoly99/Marlin-for ... its/master) according to the manual. So the latest firmware should correspond with the manual, unless of course, the manual changed as well.

[untitled86]

A few things...

1) I was using instructions from Dec instead of the latest docs. Pretty stupid.

2) I tried swapping wires. That didn't solve the problem for me, has anyone actually had that work for them? I'm thinking the Rostock Max RAMBo simply doesn't work out of the box with the included firmware. In the future I'd hope SeeMeCNC would pre-load the latest and greatest.

3) Uploading firmware was pretty simple. It's only a few steps and I think they should be in the assembly instructions. Even if that doesn't happen, here's something for the next idiot...

a) Plug-in the printer.
b) Browse https://github.com/johnoly99/Marlin-for ... kmax-rambo click the ZIP button and extract the archive.
c) Launch the Arduino IDE 1.0.3.
d) Go to Tools | Board and selected Mega 2560
e) Go to Tools | Serial Port and pick your printer's port. (If you aren't sure, Load the Device Manager and you'll see a port appear and disappear as you unplug/plugin the printer)
f) Go to File | Open and select "Marlin.pde" from folder where you extracted the archive in step b.
g) Go to Sketch and click Verify/Compile
h) Go to Tools and select Upload.


At any rate, I opened Repetier Host and was able to connect and properly execute the G28 command, etc. I'm calibrating the thing now. Thanks for all your posts.