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.
This easy-to-use tracked robot is designed for tight spaces and low ceilings. It has a full pan and tilt camera with 30X optical zoom. Multiple control options including wireless or tethered using a tablet with a video display.