I want to run a 9g servo off of the pins from an arduino nano board, using only the 5v USB connection.
The servo specifically is a SG90, which I have measured a stall current of ~250mA - I don't intend to stall it, just have it run with almost no load
I am not sure which pins to power it off of from the arduino itself - do I use the VCC or the +5v? does it matter which ground I use? should I use a breadboard to help me place any other components that may be needed, i.e. a capacitor or something? does the arduino nano negotiate to get more than the default of 100mA from a USB power connection?