@mark-doutre Alternatively, you could see if you could find a Bluetooth board that had I2C interface - I couldn't find one (though possibly BLE112 might be worth looking at - see: https://www.bluegiga.com/en-US/products/ble112-bluetooth-smart-module/), I really only found Bluetooth boards with either UART or SPI. You could possibly use an I2C to UART bridge or an I2C to SPI bridge - these seem to be relatively available.