Datasheet

smoothly. Some old Arduinos did not have a full 3.3V regulator and writing to an SD card

could cause the Arduino to reboot. To maintain compatibility we just keep it there. There's

also a green PWR (Power) good LED to the right

User LEDs

We have two user-configuratble LEDs. Connect a wire from any Arduino pin to L1 or L2

marked pads and pull high to turn on LED1 or LED2

The reset button to the right of the LEDs, will reset the entire Arduino, handy for when you

want to restart the board

Prototyping Area

The big middle section is filled with 0.1" grid prototyping holes so you can customize your

shield with sensors or other circuitry.

Breakout Pads