# I2C / BMP180 Example This example references two addtional drivers [i2c](https://github.com/kanflo/esp-open-rtos-driver-i2c) and [bmp180](https://github.com/Angus71/esp-open-rtos-driver-bmp180), which are provided in the `../../extras` folder. If you plan to use one or both of this drivers in your own projects, please check the main development pages for updated versions or reported issues. To run this example connect the BMP085/BMP180 SCL to GPIO0 and SDA to GPIO2.