[4] Connect Sensor to Copter & Pixhawk
I2C/Power Connection: The four-wire connector enables I2C communication to Pixhawk, and also powers the sensor. Connectors are available on the web-store. Check the diagram below for proper wiring.
![connecting-irlock-to-pixhawk-min.jpg 2007](https://files.readme.io/jvf5ifSPSruAM5CAdby8_connecting-irlock-to-pixhawk-min.jpg)
Sensor-to-Pixhawk Pin Connections
Mounting Orientation: The sensor should be mounted in a particular orientation with respect to the Pixhawk flight controller. For example, see the IRIS+ images to the right. The sensor should face straight down (i.e., toward the ground). It is important that the sensor is mounted level with Pixhawk.
An IRIS+ Sensor bracket is available in the web-store.
![bracketBottom02 (2)_jpg.jpg 1000](https://files.readme.io/FYNvaOkaTCwuxzJzsibE_bracketBottom02%20(2)_jpg.jpg)
Mounted on bottom of IRIS+
![pixhawk-to-pixy-i2c-pin-connection-pic.jpg 1600](https://files.readme.io/pFRJIvNQo2BkZ8XAEZ5G_pixhawk-to-pixy-i2c-pin-connection-pic.jpg)
Mounted to front of IRIS
![i2c-cable-connection-min.jpg 1600](https://files.readme.io/e8Df1hbCT4avJpH3rnWw_i2c-cable-connection-min.jpg)
Connect to I2C Splitter
![pixhawk-i2c-cable-connection-e1433186576517-min.jpg 1600](https://files.readme.io/dQTjRmxxQIqJmoPnLbpP_pixhawk-i2c-cable-connection-e1433186576517-min.jpg)
Example of correct sensor orientation
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