[CoderTriesCnc]

I don't fully understand VFD drives, but I don't think the spindle I have is one because a) it's low-powered, b) it was cheap, and c) it connects to the controller with two wires, not four.

I'm still 99% certain the controller takes data, not just power, over the USB port. The software seems to be communicating with it over USB although I can't be certain because nothing actually happens due to the power supply voltage problem. Why it also has a DB25 if USB is the only interface is a mystery. I'm still hoping it will somehow also take parallel step/dir data but as was pointed out, it's all speculation until I'm able to open it up and look inside.

[mactec54]

I don't fully understand VFD drives, but I don't think the spindle I have is one because a) it's low-powered, b) it was cheap, and c) it connects to the controller with two wires, not four.

I'm still 99% certain the controller takes data, not just power, over the USB port. The software seems to be communicating with it over USB although I can't be certain because nothing actually happens due to the power supply voltage problem. Why it also has a DB25 if USB is the only interface is a mystery. I'm still hoping it will somehow also take parallel step/dir data but as was pointed out, it's all speculation until I'm able to open it up and look inside.

You have a Dc spindle so there is no chance of there being an Ac VFD spindle Drive

[Stan Stocker]

Sorry for the confusion, with two leads it's not a VFD!