My y axis doesn't retract far enough to release my micro switch when homing. Any ideas? Mach 3 running on Windows 10 and and Rain smart cUSB controller.Sorry if it's silly.

3 things
1. Increase your debounce to 50 or more. Top right hand corner of config |general config
2. Add  soft limits so that tool head will slow down when it is near the switch. Soft limits is 0 to 0.1" before reaching the far end limit switch.
3. Add 2 ferrite sleeves to your USB cable

Hi,
can you tell us more about the controller, make and model?

Do you have microswitches or proximity sensors for home switches?. Proximity sensors tend to have not enough
hysteresis for home switches.

Craig

Hi,
can you tell us more about the controller, make and model?

Do you have microswitches or proximity sensors for home switches?. Proximity sensors tend to have not enough
hysteresis for home switches.

Craig

I guessed it is
https://www.sainsmart.com/products/4-axis-cnc-mach3-usb-motion-controller-card-interface-breakout-board.
He misspelt Sain smart as "Rain Smart".

I'm using microswitches. And running a Smart Said USB controller board. I fought with a smooth stepper ESS board and could not get it to work. So I ended up with the Smart Said.

You have switch bounce or noise triggering your switches.

Hi,
the ESS (if genuine) is a very much better board. What was it that you had trouble with?

Craig