I have two 24 Vdc motor systems that I want to control with a UNO. Each of the existing systems consist of: (1) 24 Vdc .2 hp motor (1) motor controller (2) 12 V lead acid battery (1) potentiometer (0 - 5 V) I want to replace the two potentiometers with the UNO and eliminate one set of batteries…

Integrating Uno into existing system

johnwasser October 15, 2012, 1:35pm 2

You can use the 'lower' 12V battery to power the Arduino. Connect +12V to the power jack or the Vin pin.

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