I'm building a gecko based controller for my mill and would like to be able to monitor the voltage and amperage my drivers / steppers use from my power supply. Would I wire my ammeter and voltmeter in series with the driver power supply inputs or in parrallel?
PS(+)--->Voltmeter--->Shunt Resistor--->Ammeter--->Drivers--->PS(-)
OR
PS(+)--->Voltmeter--->PS(-)
PS(+)--->Shunt Resistor--->Ammeter--->PS(-)
PS(+)--->Drivers--->PS(-)
Thanks for any help!