[3-Axis Stepper Controller]

MP,

Thank you for your detailed response.

I will be using old equipment so I won't consider it a priority to isolate.

Thanks again, this is a great project, and I am enjoying building the cnc machine and the electronics.

David

[3-Axis Stepper Controller]

Thank you.

I was worried this forum wasn't monitored anymore.

David :)

[3-Axis Stepper Controller]

I hope people still read this forum, haven't had an answer to the above question yet.

Anyway, here's another one regarding limit switches.

Attached is an altered version of a diagram that was posted earlier, what I need to know is, with three limit switches for x,y and z are they wired in series as shown. (excuse the poor artwork)

[3-Axis Stepper Controller]

Hi, First time posting here, but I have a quick question.

I have made the pcb and I am just about to populate it. Someone suggested to me that I should use opto-isolators to protect the motherboard from power spikes.

Is this necessary?

Has anyone else had this happen?

Has anyone redesigned the board to have opto-couplers?

Thanks for your help.

David