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This is DFRobot's Gravity Interface. Digital and analog connections are easy to recognize and

support most of DFRobot's I/O expansion shields and modules. Search "Gravity" in the DFRobot

store to find compatible modules.

VCC Jumper Caps

There are two Jump caps, you can change the position of two caps for the different VCC power

input. See the following schematic for details:

The middle pin is the shield VCC pin.

If you connect caps on the left side, VCC pins get power from the shield external port;

If you connect caps on the right side, VCC pins get power from the board 5V port;

This is suitable for some applications that require greater current.