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1. Specifically designed for Raspberry Pi, the sensor expansion board has built-in gyroscopes, accelerometers, magnetometers, barometers, and temperature and humidity sensors. The I2C interface communicates with additional sensors. 2. If you want to rebuild your Raspberry Pi into a robot that can detect your posture and orientation, or if you want your Raspberry Pi to collect sensor data such as temperature, humidity, and atmospheric pressure in your surroundings, then this is for you. 3. Built-in 40-pin GPIO interface for Raspberry Pi series motherboards. 4. The built-in ICM20948 (3-axis acceleration, 3-axis gyroscope, and 3-axis magnetometer) detects motion attitude, orientation, and magnetic field. 5. The built-in SHTC3 digital temperature and humidity sensor detects the temperature and humidity of the environment. 6. The built-in LPS22HB atmospheric pressure sensor detects the atmospheric pressure of the environment. 7. The built-in TCS34725 color recognition sensor recognizes the color of surrounding objects. 8. The built-in ADS1015 chip, a 4-channel 12-bit precision ADC, extends the AD function for accessing more sensors. 9. The I2C control interface is introduced to facilitate access to the main control board such as STM32. 10. Provides a complete manual with support information (example programs such as for Raspberry/STM32).