WITMOTION WTGAHRS2 USER MANUAL

Tutorial Links and Support

Tutorial Links:

• Google Drive
• WITMOTION Youtube Channel
• WTGAHRS2 Playlist

If you have technical problems or cannot find the information that you need in the provided documents, please contact the WITMOTION support team. The engineering team is committed to providing the required support necessary to ensure successful operation of AHRS sensors.

Technical Support Contact Info

Applications

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

1 Introduction

The WTGAHRS2 is a multi-sensor device detecting acceleration, angular velocity, angle, magnetic field, and GPS. Its robust housing and small outline make it suitable for industrial retrofit applications such as condition monitoring and predictive maintenance. Configuring the device allows users to address a broad variety of use cases by interpreting sensor data with smart algorithms.

WTGAHRS2's scientific name is GPS IMU sensor. It measures 3-axis angle, angular velocity, acceleration, magnetic field, and GPS data. Its strength lies in its algorithm for accurate three-axis angle calculation.

WTGAHRS2 is employed where the highest measurement accuracy is required. It offers several advantages over competing sensors:

• Heated for best data availability: new WITMOTION patented zero-bias automatic detection calibration algorithm outperforms traditional accelerometer sensors.
• High precision Roll Pitch Yaw (X Y Z axis) Acceleration + Angular Velocity + Angle + Magnetic Field output + GPS data.
• Low cost of ownership: remote diagnostics and lifetime technical support by WITMOTION service team.
• Developed tutorial: providing manual, datasheet, Demo video, free software for Windows computer, APP for Android smartphones, and sample code for MCU integration (Python, STM32, Arduino, Raspberry Pi, C++), communication protocol for project development.
• WITMOTION sensors are praised by thousands of engineers as a recommended attitude measurement solution.

1.1 Warning Statement

• ⚡Putting more than 5 Volt across the sensor wiring of the main power supply can lead to permanent damage to the sensor.
• ☀️GPS positioning requires operation outdoors.
• ?For proper instrument grounding: use WITMOTION with its original factory-made cable or accessories.
• ?Do not access the I2C interface.
• ?For secondary developing project or integration: use WITMOTION with its compiled sample code.

2 Use Instructions

Access the following resources directly or from the download center:

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

3 Use Instructions with PC

3.1 Connection Method

PC software is only compatible with Windows system.

Link to WTGAHRS2's demo video

3.1.1 Software Connection

Step 1. Connect the sensor with a serial converter

PIN Connection:

VCC

- 5V

TX

- RX

RX

- TX

GND

- GND

(When connecting with computer, VCC-5V is recommended.)

Diagram showing TTL PIN Definition. A table with colored labels: RED for VCC 5V, YELLOW for TX, GREEN for RX, BLACK for GND. Below this, a simplified connection diagram illustrates a serial converter connected to a computer and the WTGAHRS2 sensor, showing the VCC, TX, RX, and GND wires.

Diagram illustrating the connection between a microcontroller (MCU) and the WTGAHRS2 sensor. The MCU has pins labeled VCC, TX, RX, GND. These are connected to the corresponding VCC, TX, RX, and GND pins on the sensor. The diagram also shows the physical WTGAHRS2 sensor module with its cable.

4 Software Introduction

Software function introduction

(Ps. You can check the functions of the software menu from the link.)

Screenshot of the WITMOTION PC software interface. The interface displays real-time sensor data including Angle X, Angle Y, and Angle Z with values like 122.173°, 27.361°, and 139.587°. Navigation menus are visible, including 'Main interface', 'Data list', 'Graph', 'Map', '3D pose', 'Raw data', 'Configuration', 'Tools', and 'Help'. A section shows COM port selection and Baud rate settings. A table of contents for the software instructions is also displayed, listing sections like 'How to download software and driver', 'Contents', 'Use Instructions with PC', 'Main Menu', 'Data Review', and 'Configuration'.

5 Software Introduction

Software function introduction

(Ps. You can check the functions of the software menu from the link.)

Screenshot of the WITMOTION PC software interface, similar to the one in Section 4, displaying real-time sensor data (Angle X, Y, Z) and navigation menus. It includes options for COM port selection, Baud rate, and various data display modes like 'Graph' and '3D pose'. A detailed table of contents for the software manual is also visible, outlining sections and page numbers for software features, configuration, and data handling.