How to have fun with Arduino (and become a Geek in the process)

Step 4 Powering your board

There are 3 power pins with a jumper over two of them. The power jumper goes over the last two pins if you are using usb power (just like shown here). Lift off the jumper and push down over the first two if you are connecting 9 volts from a wall wart.

Comments

[computergeek321]

and the Arduino uno

[Dannne11]

good to know :D

[apeine]

You only have to do that if you have a diecimila of older boards. Boards like Duemilanove and Mega switch automatically.