MPU-6050 6-Axis Gyroscope & Accelerometer Module (3-Axis Gyro + 3-Axis Accel)

If you want to build a drone that flies stable or a robot that balances on two wheels, you need an IMU (Inertial Measurement Unit), and the MPU-6050 is the industry favorite. It contains both a gyroscope (to measure rotation) and an accelerometer (to measure gravity and speed) on a single chip. It communicates with your Arduino or Raspberry Pi via a simple I2C interface (just 2 wires). It even features an onboard Digital Motion Processor (DMP) that handles complex calculations internally, saving your microcontroller’s processing power for other tasks.