This kit includes two brackets that mount to the Trekker Bumper and act as a catcher for balls. It includes a sensor and the connectors to determine if the Trekker has caught the ball. This kit will only plug into V2.x OOPic II Expansion Boards.
The InvenSense MPU-6050 sensor contains an accelerometer and a gyroscope in a single chip. It is very accurate, this sensor is used in self balancing robots, drones, smartphones, etc. The sensor uses the I2C-bus to interface with microcontroller.