Quote Originally Posted by m_c View Post
What probe did you buy?

One thing you'll need to check, is what voltage/current the probe is designed to work with. I made up a small interface board for my probe, so it was only switching the designed 5V, so I could use it to switch a 24V opto. Details can be found in this post over on the mach forum - http://www.machsupport.com/forum/ind...html#msg195436
Two of these, almost a year ago, lol.

https://www.machsupport.com/forum/in...ic,5004.0.html