I just bought and assembled the mBot2 with the SmartWorld AddOn recently.
When I connect servos to the mBot2 Shield, they work perfectly.
When I connect any sensor (I tried with the ultrasonic sensor and the Quad RGB sensor) to the mBuild port on the mBot2 Shield, it does NOT work, I tried with an example program given on the site it gives zero output, the lights do not turn on, nothing; however as soon as I connect any/all of the sensors to the mBuild port on the CyberPi it works great. I can actually see the distances in the ultrasonic sensor.
What could the issue be?