Description
Product Overview
The GY-91 10DOF IMU Sensor Module is a compact motion tracking board that combines the MPU9250 9-axis motion sensor with the BMP280 high-precision barometric pressure sensor. This module integrates a 3-axis gyroscope, 3-axis accelerometer, and a barometer, making it ideal for applications requiring motion tracking, orientation sensing, and altitude measurement .
Please Note: This is a refurbished chip version. The magnetometer (compass) function is NOT operational on this module .
The MPU9250 is a second-generation 9-axis Motion Tracking device that features a 16-bit ADC for high-resolution data output and supports both I2C and SPI communication protocols. The BMP280 provides accurate pressure and temperature readings, enabling altitude calculation .
The module operates from 3V to 5V power supply thanks to an onboard low-dropout regulator, making it directly compatible with both 3.3V and 5V systems such as Arduino, ESP32, ESP8266, and Raspberry Pi .
Functional Sensors
| Sensor | Function | Status |
|---|---|---|
| 3-Axis Gyroscope | Measures angular velocity (pitch, roll, yaw) | ✅ Fully Functional |
| 3-Axis Accelerometer | Measures linear acceleration (including gravity) | ✅ Fully Functional |
| BMP280 Barometer | Measures atmospheric pressure and temperature | ✅ Fully Functional |
| 3-Axis Magnetometer | Measures magnetic field for heading reference | ❌ Not Functional (Refurbished Chip) |
Key Features
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10-DOF Sensing: Combines 6-axis motion sensing (gyro + accel) with barometric pressure for altitude
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MPU9250 Motion Sensor: 3-axis gyroscope + 3-axis accelerometer with 16-bit ADC output
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BMP280 Barometer: High-precision pressure and temperature sensor for altitude measurement
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Dual Communication Protocols: Supports both I2C and SPI for flexible microcontroller integration
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Selectable Measurement Ranges:
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Gyroscope: ±250, ±500, ±1000, ±2000°/s
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Accelerometer: ±2g, ±4g, ±8g, ±16g
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Pressure Range: 300 – 1100 hPa
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Wide Operating Voltage: 3V – 5V DC (onboard low-dropout regulator)
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16-bit Data Output: High-resolution conversion for motion data
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Compact Size: Small footprint measuring approximately 14.3mm × 20.5mm
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Standard Pin Spacing: 2.54mm pitch for easy breadboard integration
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Operating Temperature: -40°C to +85°C
Technical Specifications
| Parameter | Operating Value |
|---|---|
| Sensor Chips | MPU9250 (Refurbished) + BMP280 |
| Operating Voltage | 3V – 5V DC |
| Communication Protocols | I2C, SPI |
| Gyroscope Ranges | ±250, ±500, ±1000, ±2000 °/s |
| Accelerometer Ranges | ±2g, ±4g, ±8g, ±16g |
| Magnetometer | Not Functional |
| Pressure Range | 300 – 1100 hPa |
| ADC Resolution | 16-bit |
| Module Dimensions | 14.3mm × 20.5mm |
| Pin Spacing | 2.54mm |
| Operating Temperature | -40°C to +85°C |
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