1. Product Overview
The WitMotion WT9011DCL is a high-performance Bluetooth 5.0 9-axis Inertial Measurement Unit (IMU) sensor. It integrates a 3-axis accelerometer, 3-axis gyroscope, and 3-axis magnetometer, providing precise attitude and motion data. Utilizing a MPU9250 chip and Kalman filtering algorithm, it offers enhanced stability and accuracy for various applications.
Key features include:
- Bluetooth 5.0 for long-distance transmission (up to 50m in open area)
- Low power consumption
- Integrated 3-axis Acceleration, Gyroscope, and Angle measurement
- 3-axis Magnetometer (XYZ)
- MPU9250 Chip for reliable performance
- Kalman Filtering for enhanced stability and accuracy
- Compact design (32.5mm*23.5mm*11.4mm)
- Lifetime technical support
2. Package Contents
Upon receiving your WitMotion WT9011DCL sensor, please verify that all items are present and in good condition:
- WT9011DCL Sensor
- Type-C Cable
- Packaging Box
3. Setup Guide
3.1 Powering the Sensor
The WT9011DCL sensor operates on a voltage input of 3.3-5V. Connect the sensor to a compatible power source using the provided Type-C cable.
3.2 Software Installation
The sensor supports data acquisition and configuration via PC software, Android, and iOS applications. WitMotion provides a comprehensive development kit.
For PC:
Download the official PC software from the WitMotion website. The software allows for easy configuration, calibration, and data visualization.
For Android/iOS:
Search for "WITMOTION" in the Apple App Store or Google Play Store to download the official application. The app allows for easy configuration and real-time data viewing.
4. Operating Instructions
4.1 Connecting to the Sensor
The WT9011DCL uses Bluetooth 5.0 for wireless communication. Ensure Bluetooth is enabled on your PC or mobile device. The sensor will appear as a discoverable device. Pair with the sensor using the WitMotion software or app.
4.2 Data Acquisition and Visualization
Once connected, the software/app will display real-time data for acceleration, angular velocity, and angle. The PC software offers advanced visualization options, including 3D pose models and data curves.
4.3 Calibration
For optimal accuracy, especially for magnetic field measurements, calibration may be required. The PC software provides a visual magnetic field calibration tool.
The software also offers configuration options for system settings, algorithm selection (e.g., Axis 9), installation direction, and sensor range (acceleration, gyro, bandwidth).
4.4 Data Recording and Export
The software and app allow you to record measurement data directly. This data can be saved for later analysis or application. The Android/iOS app can extract data in TXT format.
5. Specifications
Detailed technical specifications for the WT9011DCL sensor:
| Feature | Value |
|---|---|
| Type | Acceleration Sensor |
| Output | Digital Output |
| Brand Name | WitMotion |
| Origin | Mainland China |
| Use | Tilt Angle Measurement |
| Voltage Input | 3.3-5V |
| Consumption Current | Typical 25mA (Working: 14mA, Broadcast: 21mA, Standby: 14uA-30uA) |
| Volume | 32.5mm*23.5mm*11.4mm |
| Measuring | 3-axis XYZ Acceleration, Angular rate, Gyro, Angle, Magnet Field |
| Range | Acceleration: ±16g, Angular Velocity: ±2000 degree/second, Mag field: ±2Gauss, Angle: X/Z±180°, Y±90° |
| Resolution | Acceleration: 0.5mg/LSB (2048LSB/g), Angular velocity: 0.061(°/s)/LSB, Mag field: 0.0667mG/LSB, Angle: 0.0055°/LSB |
| Accuracy | X, Y axis: 0.2° Z axis: 1° (no magnetic field interference and after calibration) |
| Output Frequency | 0.2~200Hz |
| Transmission | Using BLE 5.0 technology, up to 50m (open area) |
| Communication | BLE 5.0 |
| Usage Time | 40h |
| Weight | 9g |
| Battery | 130mAh |
| Interface | Bluetooth 5.0 / Type-C |
| Baud Rate | 115200kps |
| Compatibility | PC, Android, IOS system |
| Bluetooth Version | Bluetooth 5.0, Low-consumption |
| Technical Support | Provide Android, IOS App, PC software, Sample code |
| After-Sale Service | Lifetime Technical Support |
6. Maintenance
To ensure the longevity and optimal performance of your WT9011DCL sensor, follow these maintenance guidelines:
- Cleaning: Use a soft, dry cloth to clean the sensor. Avoid using harsh chemicals or abrasive materials.
- Storage: Store the sensor in a cool, dry place away from direct sunlight and extreme temperatures.
- Handling: Handle the sensor with care to prevent physical damage. Avoid dropping or subjecting it to strong impacts.
- Environmental Conditions: The sensor is designed for various applications but avoid exposing it to excessive moisture, dust, or corrosive environments.
7. Troubleshooting
If you encounter issues with your WT9011DCL sensor, refer to the following common problems and solutions:
- Sensor not connecting via Bluetooth:
- Ensure the sensor is powered on and within range (up to 50m in open area).
- Verify Bluetooth is enabled on your PC or mobile device.
- Try restarting the sensor and your device.
- Ensure no other devices are interfering with the Bluetooth connection.
- Inaccurate readings:
- Perform a magnetic field calibration using the PC software, especially if operating in environments with varying magnetic interference.
- Ensure the sensor is mounted securely and not subject to excessive vibration.
- Check for any strong magnetic fields or metal objects near the sensor that could cause interference.
- Software/App not displaying data:
- Confirm the sensor is successfully connected to the software/app.
- Check if the correct COM port is selected in the PC software (if using a wired connection or Bluetooth adapter).
- Ensure the software/app is up to date.
8. User Tips
- Microcontroller Integration: The WT9011DCL can be integrated with microcontrollers like Raspberry Pi or ESP32. WitMotion provides sample code to facilitate this, allowing for custom projects and data processing.
- Real-time Data: The sensor is designed for real-time data transmission. For data logging, ensure your connected device (PC or smartphone app) is actively recording the data. The sensor does not have internal storage for offline logging.
- Application Versatility: This sensor is suitable for a wide range of applications including VR equipment, drones, medical rehabilitation, sports monitoring, motion capture, gesture recognition, and virtual interaction.
9. Frequently Asked Questions (FAQ)
- Q: Can the WT9011DCL sensor be used with Raspberry Pi or ESP32?
- A: Yes, the sensor communicates via Bluetooth 5.0 and Type-C, making it compatible with Raspberry Pi, ESP32, and other microcontrollers. WitMotion provides sample code to assist with integration.
- Q: Does the sensor store data internally for later retrieval?
- A: No, the WT9011DCL sensor transmits data in real-time. It does not have internal data logging capabilities. Data must be recorded by the connected device (PC software or mobile app).
- Q: What is the effective range of the Bluetooth connection?
- A: The sensor utilizes Bluetooth 5.0 technology, offering a transmission range of up to 50 meters in open areas.
- Q: How do I calibrate the sensor for accurate readings?
- A: Calibration, especially for the magnetic field, can be performed using the provided PC software. The software includes a visual calibration tool to guide you through the process.
10. Warranty and Support
WitMotion provides lifetime technical support for the WT9011DCL sensor. If you encounter any issues or have questions regarding the product, please contact WitMotion's official support channels. Refer to the WitMotion website for contact information and additional resources, including sample code and detailed documentation.