Tutorial Link

Access tutorials and resources:

• Google Drive
• WITMOTION Youtube Channel (Link to instructions DEMO)
• WT901C RS485 Playlist

For technical problems or information not found in provided documents, contact the WITMOTION support team. The engineering team is committed to providing support for successful operation of AHRS sensors.

Contact

Technical Support Contact Info

Application

• AGV Truck
• Platform Stability
• Auto Safety System
• 3D Virtual Reality
• Industrial Control
• Robot
• Car Navigation
• UAV
• Truck-mounted Satellite Antenna Equipment

Introduction

The WT901C is a multi-sensor device detecting acceleration, angular velocity, angle, and magnetic field. Its compact size makes it suitable for industrial retrofit applications like condition monitoring and predictive maintenance. The device can address various use cases by interpreting sensor data through smart algorithms.

WT901C's scientific name is AHRS IMU sensor. It measures 3-axis angle, angular velocity, acceleration, and magnetic field, excelling in calculating three-axis angle accurately. It is employed where high measurement accuracy is required.

Advantages over competing sensors:

• Heated for best data availability: WITMOTION's patented zero-bias automatic detection calibration algorithm outperforms traditional accelerometer sensors.
• High precision Roll Pitch Yaw (X Y Z axis) output for Acceleration, Angular Velocity, Angle, and Magnetic Field.
• Low cost of ownership: includes remote diagnostics and lifetime technical support by the WITMOTION service team.
• Developed tutorial resources: manual, datasheet, demo video, free software for Windows, and communication protocol for project development.
• WITMOTION sensors are praised by thousands of engineers as a recommended attitude measurement solution.

Warning Statement

• Applying more than 5 Volt to the sensor wiring can cause permanent damage.
• Connecting VCC directly to GND will burn the circuit board.
• For proper instrument grounding, use WITMOTION's original factory-made cable or accessories.
• For secondary developing projects or integration, use WITMOTION's compiled sample code.

Use Instructions with PC

Access the document or download center via the following hyperlinks:

• Software and driver download
• Quick-guide Manual
• Teaching Video
• Common Software with detailed instructions
• SDK (sample code)
• SDK Tutorial Documentation
• Communication Protocol

Software Introduction

Software function introduction. (You can check the functions of the software menu from the link.)

The software interface displays real-time sensor data, including Angle X, Angle Y, and Angle Z with their respective values (e.g., 122.173°, 27.361°, 139.587°). It features a menu bar with options like Data, Graph, Map, 3D pose, Raw data, Record, Tools, Language, and Help. Configuration sections are also accessible.

Key software sections and features include:

• Software & Driver: How to download software and driver, PC Software Download, Install Driver.
• Use Instructions with PC: Connecting with wiring sensor, Connecting with Bluetooth Sensor (including Select Sensor Model, Search Device).
• Main Menu: Function configuration (Record, Data playback, Tools, View, Help, Language, Configuration), Data Review (Main Interface, Curve Display, Map Function, 3D Demo, Raw data).
• Configuration: Read sensor configuration, System settings (Reset, Sleep and disable sleep, Alarm setting).

Connect the sensor with a serial converter

PIN Connection

• VCC: 5-36V
• B: B
• A: A
• GND: GND

(VCC 5-36V is recommended for connection)

RS485 PIN DEFINITION

The RS485 interface uses the following pin assignments:

• RED wire: VCC (5-36V)
• YELLOW wire: A
• GREEN wire: B
• BLACK wire: GND

A wiring diagram illustrates the connection of the sensor's VCC, B, A, and GND pins to the corresponding terminals on a power supply and serial converter unit.