Having trouble with new build UGS gets an active alarm when I switch on the power supply to the microsteppers I am using grbl 1.1h, arduino uno and an electro cookie for the controller. I have back tracked all leads and grounds and I am not seeing any shorted wires. I also took the time to rewire but still get the same result. If I disable hard limits machine runs fine just cant run the home function. any help would be appreciated.