Quote Originally Posted by JAZZCNC View Post
Even the super cheap Ebay ones work ok dave.

You haven't wired the switch powers in series have you.? That flickering looks like struggling for volts.!
Hi

No, all wired in parallel as described in manual, I have a quality bench psu and will test them on that now...

If you fully cover the end with the target the LED is solid on, but mach picks up the very first flicker and takes that as the position, as expected.

Maybe these are fakes or junk clones which have the output conditioning circuit missing??