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I have the USB version the NVUM. I just installed the MPG and got it working with two issues. The ESTOP on my MPG was wired to the NC contact on the switch in the MPG. I moved it to the NO...

Jimmy: Don't be too upset over it. I have the standard NVUM and it does work pretty well it just has some issues. I gave up on the hassles that went with a parallel interface and I don't regret...

I thought about the issue you documented and wanted to note that there are several versions of the NVUM USB driver out. One is labeled 100KHZ. That driver does not work reliably in my system...

I am using HY-DIV268N-5A, with minor modifications. All three axis are working well with two NEMA 23 and one NEMA 34 motor. I have run them fast and slow. Not seeing any dropout.
I am using a...

Hello: This is Tommy. I am located just outside of Austin TX. I have returned to finish what I started long ago before a series of family illnesses. Already received help from several members...

Go to LinuxCNC . I went through the same process as you. I am not a Windows fan, but for work I am forced to use it. Supporting Linux and Windows both was too stressful. I gave up, bought a...

Ky1duck: I was able to get a board very quickly. I had already modified my power supplies and had everything ready. Installed Estop, no problem. Installed X axis driver interface as documented. ...

miky4u2: Sorry for the last note; I just now read your web site. I do need the latest driver, but for the NVUM USB board. The Chinese vendors are giving me a headache. No idea who created what or...

Wow those are great photos. I just ordered one. I see fairly decent optoisolators, and the power supply has two levels of isolation. I would feel a lot better with schematics, but I can guess at...

I would like to see what the NVUM looks like without the cover. Can someone take a picture and post so that we can see what is there and maybe get an idea of how well it might be isolated?...

miky4u2: I am a little confused, I thought these were built by Novosun. Their website is http://www.nvcnc.net You can download their driver directly from their website. Note that there are 2...

Do not assume that the schematic posted by Lucas matches your HY-DIV268-5A driver. There are multiple versions out there. Mine for instance has a different capacitor in the TOQ timing circuit. It...