You can jist flip the Z plug to reverse the direction of the stepper.
Doing some research and it sounds like the 5v regulator is bad on this board.
Are you sure your power supply (12V) is ok? We haven’t seen a bad 5V regulator on a legit rambo board before (plenty on the ramps).
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I can put a multimeter on it, but I would expect to have issues with with driving the steppers if that was the case.
Yeah, but the motors will move with almost any voltage. Even under 5V.
That green adapter has be a know pain in my but and I am not including them in the next batch of power supplies.
I have not seen any reg issues with ultimachine boards yet so I really hope that is not it.
12.8 no load coming out of the supply, 12.8 to the power block on the board (with or without the USB connected). 12.4 at the block when running the steppers(with the USB power connected - it freezes when the USB is disconnected)
Okay I am working on this now with Jason from ultimachine. The firmware I have up as of last night works better but without usb still blanks eventually. My old tagged version works fine so something has changed in the firmware. Getting there.
I will update it here.
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Awesome, thanks for the update! Jason emailed me last night and I linked him to the Github page for the firmware. It’s good to know that its reproducible and not just my board!
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Rad Build! The wire braid sheath is intense man, major shielding…I think I just got a reality check on my secret little desire to do a plasma table. 
keep up the awesome work!
It’s probably overkill since I used shielded wire as well, but it adds some protection to the wires which is a nice bonus.
I forgot I had some ferrite beads, so I clipped one onto each if the short exposed sections of the steppers. Again, overkill. But I had them, so why not?!
I need to finish wiring for the outlet relay, and the torch relay. I need to sit down and read how to trigger them with the gcode, and the wiring for the Archim1.