Dump circuit?

[jdholbrook]

Hi,
Just ordered my HobbyCNC board and am getting the supporting components rounded up.
I would like to run the board at 42+volts (45ish) so am considering using a dump circuit to protect the drives.
My steppers are 5.4v at 1.5a is why I wanted to run the volts as high as possible.
Has anyone used a dump circuit with the HobbyCNC board?

Thanks
James

[HobbyCNC]

Jim,
Keep the volts below 40 for good results. That last few volts really won't make any difference in speed.

HobbyCNC.com

[jdholbrook]

Will do then.
Thanks

[mod-rn man]

I'm I rookie, & in the process of collecting parts for my machine including a commercial 48V PSU + I've pretty much decided to use the Hobbycnc board. So here is my rookie question (proably the first of many)
Following your comments about keeping the voltage under 40, how can I "adjust" the voltage downward? I can solder & have a basic understanding of components if that helps.

Thanks