Hello All,
I'm trying for months to found an answer on this forum about the end switch problem I meet from long time now.
I found several good tips who improve the behavior of my home made CNC but still the same issue.
I still have end switch detection despite all optimisations and the implementation of optocouplers with two diffenrents power supply.
My current configuration is the one in the joined file (best solution from GRBL github site)
I have 10cm of cable between the optocouplers and the Arduino nano board.
I have the issue even if the spindle is turned off.
I tried to replace the Arduino, motor cable with larger ones, add ferrites,
I don't know what else I could do...
If you have any idea I 'll take it.
Thank you
William