Hello, yesterday I got my stepper motors and I decided to test them, so I wired the ramps like this: I put all the DRV8825 on the right place, put only one stepper motor on Y axis, one endstop for Ymin, and the LCD connected, on the terminal blocks I had only the 12V 5A input wired, after messing around with the motor movement and pressed auto home, it went to the endstop as expected and about 5 seconds later I started to smell burning and there was smoke coming out between the arduino and the ramps 1.4, I immediately turned it off and after it cooled down it was working again, I read something online about tuning the Vref to limit the current on the drivers and when I went to check it, I put the black pointer on the GND and the red one on the potentiometer while the printer was turned on but I always got a 0 reading on all of the drivers, what could it be?
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