WitMotion WT61C High-Accuracy Accelerometer Sensor (MPU6050) - 6-Axis Acc+Gyro+Angle AHRS IMU for Arduino / TTL & RS232

Overview

The WitMotion WT61C is a cost-effective 6-axis AHRS IMU that fuses a 3-axis accelerometer and 3-axis gyroscope to output acceleration, angular velocity, and 3-axis angle (roll/pitch/yaw). Powered by the WitMotion fusion (Kalman) algorithm, it delivers XY static angle accuracy of 0.05° (0.1° dynamic), making it ideal for inclination, vibration, and attitude detection in embedded projects, robotics, automation, leveling platforms, and VR/AR integrations. It supports TTL (3.3–5 V) and RS232 (5–36 V) serial interfaces and works seamlessly with Arduino, STM32, C/C++, and MATLAB using the provided SDK and PC tools.

Key Features

• 6-Axis outputs: 3-axis acceleration, 3-axis angular velocity, plus 3-axis angle.

• High accuracy: XY static 0.05°, dynamic 0.1°; acceleration stability 0.01 g.

• Wide ranges: Acceleration ±16 g; Gyro ±2000 °/s; Angle X/Z ±180°, Y 90°.

• Adjustable output rate: 0.2–100 Hz; baud 9600 / 115200 bps.

• Dual interface: TTL 3.3–5 V or RS232 5–36 V for easy MCU/industrial integration.

• WitMotion Fusion Algorithm: Kalman filtering with drift compensation for stable attitude.

• Configurable via software: Acc calibration, placement orientation, bandwidth, output rate, reset Z-axis to 0°.

• Developer resources: Free Windows PC software (MiniIMU.exe), drivers (CH340/CP2102), manual & datasheet, SDK for 51 serial, C/C++, STM32, Arduino, MATLAB, plus Android app and demo videos.

• Data tools: Raw data view, real-time charts, TXT export, and a 3D motion demo (source code available on request).

Technical Specifications

• Model: WT61C

• Brand: WitMotion

• Input Voltage: TTL: 3.3–5 V; RS232: 5–36 V

• Current: < 25 mA

• Interface: TTL / RS232

• Output Data: 3-axis acceleration, 3-axis gyro, 3-axis angle (accumulated error in Z-axis)

• Measuring Range: Acc ±16 g; Gyro ±2000 °/s; Angle X/Z ±180°, Y 90°

• Resolution: Acc 0.0005 g; Gyro 0.61 °/s

• Stability: Acc 0.01 g

• Angle Accuracy: XY static 0.05°, dynamic 0.1°

• Output Frequency: 0.2–100 Hz

• Baud Rate: 9600 / 115200 bps

• Size: 51 × 36 × 15 mm (≈ 2.02″ × 1.41″ × 0.59″)

• Installation: Vertical or horizontal

• Net Weight: 20 g

• Operating Temp: −40 ~ 85 °C

• Axis Definition: Cartesian coordinates, right-hand rule

Pinout (XH2.54-4P, TTL)

1. VCC — 3.3–5 V

2. TX — Serial data input, TTL

3. RX — Serial data output, TTL

4. GND — Ground

Angle Output Protocol (frame head 0x55 0x53)

Angle decode (°):

• Roll = ((RollH<<8)|RollL) / 32768 * 180

• Pitch = ((PitchH<<8)|PitchL) / 32768 * 180

• Yaw = ((YawH<<8)|YawL) / 32768 * 180

Checksum:
Sum = 0x55 + 0x53 + RollH + RollL + PitchH + PitchL + YawH + YawL + VH + VL
(Acceleration and angular-velocity packets follow a similar format.)

Software & Integration

• Windows tools show raw frames, parsed data, live plots, and attitude gauges; support recording & TXT export.

• 3D Demo visualizes motion; source code can be provided.

• MCU connection: direct serial to Arduino/MCU; TTL is recommended for simpler integration.

Typical Applications

• Automation & robotics, tilt-angle monitoring, leveling platforms, vibration monitoring, industrial testing, IoT integration, VR/AR headsets.

Details

Cost-effective IMU with 0.05° accuracy in X Y axes. Features inclination, vibration, and attitude sensing using WitMotion Fusion Algorithm. Includes acceleration, gyroscope, angle, vibration, Kalman filtering, and MCU functions.

WitMotion WT61C sensor offers 3-axis acceleration and gyroscope with ±16g/±2000°/s range, 0.0005g resolution, TTL/RS232 interface, 9600/115200bps baud rate, -40°C to 85°C operation, and dimensions of 51.3×36.1×15mm.

WitMotion WT61C accelerometer sensor enables automation, VR headsets, leveling, and vibration monitoring. Features free software for easy setup, displaying real-time attitude data with user-friendly interface for consumer electronics, IoT, industrial testing, and more applications.

Configurable sensor with acceleration calibration, direction setting, and real-time data measurement. Features include Z-axis reset, bandwidth adjustment, and live motion curve display for precise monitoring and analysis.

WitMotion WT61C offers high-accuracy motion sensing with data export to TXT files, 3D visualization for intuitive motion analysis, and easy MCU integration via TTL interface.

Development Kits for WitMotion WT61C include software, drivers, and documentation for STM32, Arduino, Windows, and Matlab. Features SDK, manuals, datasheets, demo videos, and Android app support.

WitMotion WT61C sensor offers angle output protocol with roll, pitch, yaw, firmware version, and checksum. Comes with calculation formulas, documentation, cables, and QC label.