GY-801 Multi-Sensor Board

Wiring Connections:

• Power and Ground:
  • VCC: Connect to 3.3V or 5V power supply (depending on your microcontroller)
  • GND: Connect to Ground
• I2C Communication:
  • SCL: Connect to SCL pin on microcontroller
  • SDA: Connect to SDA pin on microcontroller
• SPI Communication (Optional for some sensors):
  • CS: Chip select pin for SPI communication
  • MOSI: Master Out Slave In for SPI
  • MISO: Master In Slave Out for SPI
  • SCK: Serial Clock for SPI

Power:

• Operating Voltage: 3.3V to 5V (works with both 3.3V and 5V microcontrollers)
• Current Consumption: Typically 1.6mA for the entire board, but may vary slightly depending on active sensors

Input and Output:

• Input: I2C or SPI commands from a microcontroller to configure and read data from the sensors
• Output: Digital data for acceleration, gyroscopic rotation, magnetic field strength, pressure, and altitude, depending on the sensor in use

Physical Characteristics:

• Size: Compact, approximately 21mm x 17mm
• Weight: Very lightweight, typically a few grams
• Mounting: Four holes at the corners for secure mounting on a PCB or project enclosure
• Pin Layout: Clearly labeled pins for easy connection to your microcontroller

Technical Specifications:

• ADXL345 Accelerometer:
  • Measurement Range: ±2g, ±4g, ±8g, ±16g
  • Sensitivity: 256 LSB/g (least significant bits per g)
• HMC5883L Magnetometer:
  • Magnetic Field Range: ±1.3 to ±8 Gauss
  • Sensitivity: 0.73 mG/LSB at ±1.3 Gauss
• L3G4200D Gyroscope:
  • Angular Rate Range: ±250, ±500, ±2000 degrees/second
  • Sensitivity: 8.75, 17.5, 70 mdps/digit (milli-degrees per second per digit)
• BMP085 Barometer/Altimeter:
  • Pressure Range: 300 to 1100 hPa
  • Altitude Range: 0 to 9000 meters
  • Resolution: 0.03 hPa (or 0.25 meters altitude)

Additional Features:

• Versatile Application: Ideal for multi-sensor applications such as drones, robotics, and navigation systems, where multiple types of data are needed for accurate control or measurement.
• Cross-Compatibility: Can be used with popular platforms like Arduino, Raspberry Pi, and others due to its standard I2C/SPI communication protocols.
• Pre-Calibrated Sensors: Sensors come pre-calibrated from the factory, ensuring accuracy out of the box, though further calibration can be done if higher precision is needed.
• Ease of Integration: With a small form factor and multiple sensors integrated into one board, it reduces the need for separate modules, saving space and simplifying design.

How to Use:

• Step 1: Solder header pins to the board if they are not pre-soldered.
• Step 2: Mount the GY-801 board securely to your project using the mounting holes provided.
• Step 3: Connect the VCC and GND pins to your microcontroller’s power supply and ground, ensuring correct voltage levels.
• Step 4: Use the I2C (SCL and SDA) or SPI (CS, MOSI, MISO, SCK) pins to connect the board to your microcontroller.
• Step 5: Write or upload code to your microcontroller that initializes the sensors and reads data from them. Libraries for these sensors are available for popular platforms like Arduino.
• Step 6: Calibrate the sensors if necessary, particularly the magnetometer and gyroscope, to ensure accurate readings in your specific environment.
• Step 7: Use the sensor data in your project for navigation, stabilization, environmental sensing, or other applications as needed.
• Step 8: Troubleshoot by checking connections and code if the sensor readings do not appear as expected.

The GY-801 multi-sensor board is a powerful tool for anyone looking to add advanced sensing capabilities to their project. With its compact size, multiple sensors, and easy integration, it’s an excellent choice for a wide range of applications.