WitMotion HWT101CT Z-Axis Single-Axis Inclinometer, 0.1° Accuracy, 0.2–1000 Hz, IP67, TTL/RS232/RS485 (Modbus RTU)

Overview

WitMotion HWT101CT is a high-precision single-axis (Z-axis) angle sensor designed for heading/azimuth measurement. It integrates a crystal gyroscope and a posture solver with Kalman filtering, delivering stable Z-axis angle output with 0.1° accuracy and 0.01° stability. The sensor supports TTL/RS232/RS485 (Modbus RTU) interfaces, an adjustable output rate from 0.2 to 1000 Hz, and an embedded backup battery that saves the heading angle before power-off. Its IP67 aluminum enclosure is suitable for harsh environments.

Key Features

• Z-axis angle output with built-in crystal gyro and attitude solver

• Accuracy 0.1°; stability 0.01°

• Output rate 0.2–1000 Hz (default 10 Hz)

• Baud rate 4800–921 600 bps (default 9600)

• Multi-cascade: RS485 version supports cascading up to 128 units

• Embedded backup battery for saving heading angle on power-down

• IP67 protection; aluminum shell

• Horizontal installation only; suitable for slow static or dynamic measurement (not for intensive vibration)

• Free Windows software: real-time display, graphs, 3D demo, recording/export to TXT, configuration & calibration

• Dev kits & resources: manual/datasheet, drivers, STM32/Arduino/51 routines, Windows C/C#, Matlab

Specifications

*The spec image labels this field as “Height 108.6g”, which indicates weight = 108.6 g.

Dimensions & Mounting

• Body: 45 mm × 45 mm × 17.4 mm; corner holes with 3 mm thickness panel

• Install on a flat, smooth, stable surface.

• Keep the sensor axis parallel to the measured axis; avoid tilt between axes.

• Horizontal installation only (see figures: correct vs error alignment).

Software & Tools

• Windows PC software: real-time angles/graphs, 3D demo (car/plane/cube/head views), data recording/playback, raw-data review, configuration (baud, output rate), Z-axis reset, zero-bias auto-acquisition, manual calibration.

• Data export: TXT log with timestamps and channels.

• Development kits: STM32 serial routine, Arduino serial library, 51 MCU routines, Windows C/C#, Matlab examples.

• Bundled assets: Manual, Serial Driver, PC Software, Program folders.

Applications

UAVs/drones, smart cars/AGVs, intelligent robots, balance vehicles, smart sweepers, medical devices, and other heading/rotation monitoring scenarios.

Installation Notes (Essentials)

1. Firmly fix the sensor to a level mounting surface to avoid angle errors.

2. Ensure the two axes are parallel (sensor axis A ↔ measured axis B).

3. Use the PC tool for zero-bias and manual calibration after installation.

Details

High-precision single-axis HWT101CT angle sensor offers Z-axis output with 0.1-degree accuracy. It uses a built-in crystal gyroscope and posture solver, enhanced by Kalman filtering and Witmotion algorithm for stable, noise-free measurements. The compact, IP67-rated design features a black casing and cable connector, ideal for demanding environments needing reliable angular data.

WitMotion HWT101CT inclinometer offers data saving with backup battery and IP67 protection, providing reliable performance in harsh environments and up to 30 minutes of water resistance.

High-precision WitMotion HWT101CT inclinometer offers 0.1° accuracy, multiple serial ports, embedded battery, and supports horizontal installation in static or dynamic environments with Z-axis gyro measurement.

WitMotion HWT101CT inclinometer supports multi-cascade via 485 communication, enabling up to 128 units for simultaneous heading angle measurement, displayed on a laptop interface.

WitMotion HWT101CT inclinometer for drones, sweepers, smart cars, balance cars, robots, and medical devices. More applications available.

WitMotion HWT101CT inclinometer, 9-36V, <25mA, TTL/RS232/RS485, Z-axis angle and angular velocity output, ±180° range, 0.1° accuracy, 45×45×17.4mm size, -40~+80°C operating temperature.

WitMotion HWT101CT inclinometer software offers real-time 3D data visualization, angle measurement, graph display, and data recording. Features include easy-to-read graphs, attitude measurement, and intuitive interface for monitoring sensor data.

3D demo displays sensor motion intuitively with car, head, plane, and cube models. Config menu allows easy setup of WitMotion sensor settings including baud rate, output rate, calibration, and bias adjustment.

Powerful data storage and export to TXT format. Includes development kits with manual, datasheet, sample codes, drivers, and free software for Windows PC, supporting STM32, Arduino, Windows C++, and Matlab.

Install sensor on a stable surface, aligning its axis with the measured axis. Ensure Axis A is parallel to Axis B to avoid angular misalignment and ensure accurate tilt measurement.

WitMotion HWT101DT inclinometer pin connections for TTL, 232, 485, and single-chip TTL modes. Includes wiring diagrams with color-coded pins: red (VCC), yellow (TX/A), green (RX/B), black (GND). Voltage ranges 5-36V.