GY-87 IMU module is a very high accuracy module compared to similar models such as MPU9250 and can provide acceleration, change of angle and strength of the magnetic field in three axes x, y and z. This module is actually a combination of 3 sensors. MPU6050, HMC5883L and a barometric temperature and pressure sensor. The barometric temperature and pressure sensor can be either BMP180 or BMP085. The communication protocol is I2C.

GY-87 Module Pinout

This module has 8 pins:

• VCC_IN: Module power supply – 5V
• 3V: Module power supply – 3.3V
• GND: Ground
• SCL: Serial Clock for I2C protocol
• SDA: Serial Data for I2C protocol
• FSYNC: Synchronous digital input (I2C speed setting)
• INTA: MPU6050 IC interrupt pin
• DRDY: Data ready pin for HMC5883L IC