I have an arduino Uno with a motor shield attached I would like to drive 2 12 volt dc motors. Can I just attach a 12 volt power supply to the arduino Uno?
I ask because if I can attach a 12 volt power supply to the uno, I would like to also try and drive some leds from the Uno as well. I remember that the VIN jumper needs to be connected if connecting a power supply through the Arduino uno. There is also a pin labeled VIN.
If I can connect a 12 volt power supply to the arduino uno, can I power the leds from the vin pin.