Does that open builds board have more power, 2.5 amps?
Also have you seen Super Gerbil? Three axis for $140 and upgradeable to 5! Looks like the 4th axis box, $225, is needed for 4amp drivers. But a 4th!
https://awesome.tech/new-products-mini-gerbil-and-super-gerbil/
Nope, same. Super Gerbil looks sweet, great for a Super User such as yourself! The expandabilty is pretty cool, just drop in 2 additional drivers.
Wouldnât say itâs a bad idea, as long as the power supply is rated high enough (preferably 10-20% above) to cover the combined amperage. Only worry would be the spike power draw and noise the router could produce on the line.
When I swapped boards, I just used the original S3 power supply (cut, spliced, and stripped) but that would be a point of no return 
. At first anyway, did eventually swap the PS to a Mean Well
See solution first post edit.
Nope, didnât try. Iâll eventually install it, urgency is less now.
Got a few things percolating through the old grey matter, see what we come up with.
I too have had some noise on my A axis motor. The funny thing is, that with no power to the control box, I can hand turn it. and the red light shows up on the A stepper drive controller board. If I turn it slow, it barely makes chatter noise, but if it is turned faster, it has a louder chatter. However, if I un plug the stepper motor, and then turn it, it spins easily and without noise.
Turning the motor by hand causes it to act as a generator, resulting in the lights, and the chatter as impulses are generated by the current being sent to the stepper driver.
that makes sense. I did that because when I was running the axis, it had chatter, but now im thinking it may have been because my velocity was turned up too much in motor tuning. I turned down the velocity and am fixing to go try it. hope this works.
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