Datasheet

Wiring

Wiring for use with I2C

Chances are you'll use this board with the I2C interface pins. I2C is handy because you can

have multiple sensors all connected on two I2C pins and share them nicely as long as each

one has a unique address. I2C isn't particularly fast but that's fine for a sensor like this one

(it's not good for video or audio type data)

I2C is really fast to get started, so we suggest that. Connect the VIN pin to 5V and GND pin

to ground. Then connect the SDA pin to your I2C SDA/data line and SCL pin to your I2C

SCL/clock line.

On UNO/Duemilanove/etc, SDA == Analog 4, SCL == Analog 5

On Leonardo/Micro, SDA == Digital 2, SCL == Digital 3

On Mega/ADK/Due, SDA == Digital 20, SCL == Digital 21

The reset pin is not required for use, but if you can spare a pin, it will make the system a little

more rugged - the Arduino will do a hard reset of the CAP1188 on startup, connect RST to

any digital I/O pin. In the library example code you can set up that pin in the CAP1188 object