Datasheet

For those working with Seeduino or Arduino boards, the layout should be quite familiar. The labels on
the "Power" header pins may be confusing - the new Arduino Uno has two ground pins between the Vin
and 5v, and label "GND" twice, but the Grove labels match the Duemilanove which label "GND" once,
wider, to indicate both pins.
There is one small thing to take note of when connecting to analog or digital sockets. Each socket
contains 5V, GND, and two I/O pin connections:
When using the digital I/O, note the staggered alignment of the pins – that is, one socket handles D1 and
D2, the next D2 and D3, and so on. If you are going to use an input the small unit and an output unit