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By chrg

I have big easy driver v1.2. I have given supply to driver with 15v ,5A adapter.Whenever I measure voltage at Test Point of big easy driver,noise can be heard from motor.So can I give this test point voltage directly to arduino uno's ADC port to measure voltage and calculate current from this voltage in arduino. Is it safe to measure this voltage at this test point continuously with arduino uno? What I should do to remove noise when continuously measuring voltage at test point?

By jremington
Please describe in detail how you are measuring the voltage at the test point.

The symptoms suggest that your method is injecting a signal (possibly AC line interference) into the driver circuitry.