Electric Imp - April Breakout Board
The April board is a must have for anyone new to working with the Imp card and provides the SD card socket, 0.1" header, and ID chip to identify your card on the Imp Cloud service.
The board requires 3.3V which can be supplied by the on-board mini-USB connector, or you may use the battery inputs. You will need to configure the 3-pin jumper to either 'BAT' or 'USB'.
NOTE: The Electric Imp card module is sold separately.