GODIYMODULES MCU-20948-001 6-Axis 6DOF Motion Tracking Sensor Module User Manual

1. Introduction

This manual provides detailed instructions for the installation, operation, and maintenance of the GODIYMODULES MCU-20948-001 6-Axis 6DOF Motion Tracking Sensor Module. This module integrates an accelerometer and gyroscope, supporting both I2C and SPI communication protocols, and is designed for various motion tracking applications, particularly with Arduino-based systems.

2. Product Features

• Integrated 6-Axis (Accelerometer + Gyroscope) motion tracking.
• Supports both I2C and SPI digital communication interfaces.
• Low power consumption design.
• Wide operating voltage range: 1.71V to 3.6V.
• Compact module design for easy integration into projects.
• Compatible with Arduino-based development platforms.

3. Technical Specifications

4. Setup and Connection

This section details the physical connections required to integrate the MCU-20948-001 sensor module into your project.

4.1 Pinout Diagram

The image above displays the pin configuration of the MCU-20948-001 module. Understanding these pins is essential for correct wiring.

4.2 Power Supply

• Connect the VCC pin to a power source within the range of 1.71V to 3.6V.
• Connect the GND pin to the ground of your system.
• Caution: Applying a voltage higher than 3.6V, such as 5V, can permanently damage the sensor module.

4.3 Communication Interface

The module supports both I2C and SPI communication. Select the appropriate interface based on your project requirements.

4.3.1 I2C Connection

• Connect SCL to your microcontroller's I2C Clock pin.
• Connect SDA to your microcontroller's I2C Data pin.
• The default I2C address is typically 0x69 or 0x68, depending on the state of the ADO pin.

4.3.2 SPI Connection

• Connect SCL to your microcontroller's SPI Clock (SCK) pin.
• Connect SDA to your microcontroller's SPI Master Out Slave In (MOSI) pin.
• Connect ADO to your microcontroller's SPI Master In Slave Out (MISO) pin.
• Connect NCS to your microcontroller's Chip Select (CS) pin.

5. Operating Instructions

After successfully connecting the module, you can begin programming your microcontroller to read data from the sensor.

5.1 Software Libraries and Code

• For Arduino-based systems, specific libraries are required to interface with the MCU-20948-001 (ICM-20948) sensor. Search for "ICM-20948 Arduino library" in the Arduino IDE Library Manager or online.
• The register map and communication protocols for the ICM-20948 differ from older sensors like the MPU-9250. Ensure you use libraries and code specifically designed for the ICM-20948 to avoid compatibility issues.
• Refer to the documentation provided with your chosen library for example code and detailed usage instructions.

5.2 Data Acquisition

Once the library is integrated, you can initialize the sensor and read accelerometer and gyroscope data. The sensor provides raw data which may require calibration and filtering for accurate motion tracking.

• Accelerometer: Measures linear acceleration along X, Y, and Z axes.
• Gyroscope: Measures angular velocity (rotation rate) around X, Y, and Z axes.

6. Maintenance

The MCU-20948-001 sensor module is a low-maintenance device. Follow these guidelines to ensure its longevity:

• Keep the module clean and free from dust and moisture.
• Avoid exposing the module to extreme temperatures or direct sunlight.
• Handle the module with care to prevent physical damage to the components or solder joints.
• Ensure proper ventilation if enclosed in a casing to prevent overheating.

7. Troubleshooting

If you encounter issues with your MCU-20948-001 module, consider the following common problems and solutions:

• Module Not Responding / No Data:
  • Verify power connections (VCC and GND) and ensure the voltage is between 1.71V and 3.6V. A 5V supply will damage the module.
  • Check communication wiring (SCL, SDA for I2C; SCL, SDA, ADO, NCS for SPI) for correct connections and continuity.
  • Confirm the correct I2C address (0x68 or 0x69) is being used in your code.
  • Ensure the correct software library for the ICM-20948 is installed and properly configured. Libraries for MPU-9250 are not compatible.
• Inaccurate Readings:
  • Perform sensor calibration routines if available in your chosen library.
  • Ensure the module is securely mounted and not subject to vibrations or external magnetic interference (if using a magnetometer, though this module is 6-axis).
• Magnetometer Not Working (if applicable):
  • While this product is advertised as 6-axis, some ICM-20948 chips include a magnetometer. If your specific chip has one and it's not working, ensure the magnetometer is enabled and correctly addressed in your software. Some breakout boards might not expose all 9-axis functionality or require specific initialization.

8. Safety Information

• Do not exceed the specified operating voltage (1.71V to 3.6V). Overvoltage will damage the module.
• Avoid short-circuiting the pins.
• Keep the module away from water, corrosive liquids, and extreme temperatures.
• This product contains small components and should be kept out of reach of children.
• If you are unsure about any connection or operation, consult relevant technical documentation or seek professional assistance.

9. Warranty and Support

For technical support or inquiries regarding the GODIYMODULES MCU-20948-001 sensor module, please refer to the seller's contact information or the product listing page where you purchased the item. Specific warranty details may vary by retailer.