I am building a little pen plotter.
It is powered by a 12V 1.0A wall wart, as well as by a standard USB connection.
There is an Arduino Duemilanove, which will draw 120mA for the Atmega328 as well as 50mA for the control pins.
Also powered from VIN is a 12V 2.08W fan, which will run continuously.
Will this run without blowing something up?