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I unplugged and completely removed the breakout board from the rack.
I only powered the card with a USB 5V supply.
I get the same results than before :

The outputs 10, 11, 12,...

I use a separate power supply to 5V via USB. In my tests, everything is plugged in, then I turn on the BOB and then the PC. I noticed that the PC also fed the BOB after completing my tests, when I...

Hi,

Thanks for your precious help john.

I checked the parallel cable and all possible ground loops. Nothing to mention.

I added the link on my board and now i have the power led turned on...

Thanks John,

I used common mechanical lever micro switches. I have two normally closed switches in serie per axis at end limits. I have 3 axis so i used 3 breakout board inputs with 1 common...

Hello,

I'm not electronics engineer and CNC hobbyist beginner, I'd like to get your advices :

Is this breakout board only able to work with opened circuit limit switches ?
(Is there any...