Uno Power Supply

I'm putting an Arduino Uno into a golf cart to control an LCD screen which will be powered by the golf cart batteries.

To power this, can I just supply the 6-12V using the Vin and GND pins?

Or will I have to supply power using the boards power jack?

Thanks in advance for your help.

You can supply power through the Vin pin, however:

  • 6V is a bit low and you might not get normal operation -- at least 7V is recommended
  • the Vin input is not protected by a reverse-blocking diode like the power jack. If you get the wiring backwards, your board is toast.

-- The Rugged Motor Driver: two H-bridges, more power than an L298, fully protected