Blueberry home solutions smart hub for raspberry pi blueberry i2ccable the blueberry 15cm i2c cable allows you to interconnect modules from the blueberry smart hub system for the raspberry pi for example use the cable to connect the wireless temperature and humidity sensor to the 4 character 14 segment display apply power and watch the temperature and humidity being regularly updated on the display very useful for testing and commissioning your internet of things system blueberry i2c cab