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  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

  • WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration

● (1) High Precision Military-grade Pitch Roll Yaw (X Y Z axis) Accelerometer + Angular Velocity + Angle +Magnet Field + Quaternion data output

● (2) Designed with advanced Kalman filters and 32-bits processor, ensure high stability and precision of 0.1-200HZ data output, dynamic angle measurement accuracy at 0.05 degree

● (3)In-built with military-grade RM3100 magnet field sensor, which barely affected by the magnetic field interference, can automatically correct the data output to the accurate value. There is few drift of Z-axis angle.

● (4) Equipped with IP67 waterproof and built-in accelerometer SCA300 chip make it more precise. Product motion attitude data output still remains accurate even in harsh environment.

● (5) BUY WITH CONFIRDENCE: R&D by WitMotion Team( 6-year Professional Attitude Measuring Solution Provider), Lifetime Technical Support: (Email: kyle@wit-motion.com, Mob/Whatsapp: +86 13652339539), Providing PC software, mobile phone APP, and 51 serial, STM32, Arduino, and Matlab sample code

Specification

WitMotion HWT905 RS232 High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration



Highlights

HWT905’s scientific name is AHRS IMU sensor. A sensor measures 3-axis angle, angular velocity, acceleration and magnetic field. HWT905 is employed where the highest measurement accuracy is required.

Its strength lies in the algorithm which can calculate three-axis angle accurately.

Robust MEMS designs and high performance in harsh environment

Ground breaking bias stability, low noise level and good vibration robustness

Persued for best data accuracy and stability: WTMOTION patented zero-bias automatic detection calibration algorithm and R&D dynamic fusion algorithm outperforms traditional accelerometer sensor


Technical Specifications:

Current: <40mA

Voltage: 3.3-5V (requiring a power source of 3.3-5V)

Data output frequency:0.2-200Hz

Baud Rate: 4800-961200 (adjustable)

Working Temperature: -40℃ ~ +85℃

Output Content: 3-axis Acceleration+Angle+Angular Velocity+Magnetic Field+Quaternion

Range: Acceleration (±6g), Gyroscope (±2000°/s), Magnet Field (±4900µT), Angle (X, Z-axis: ±180°, Y ±90°)

Resolution: Acceleration (0.005g), Gyroscope (0.61°/s), Magnet Field (16 bits)

Angle Accuracy(after calibrated): X, Y-axis: 0.05° (Static) , X, Y-axis: 0.1° (Dynamic)


Note: Z-axis angle will be affected by magnetic field. It is required to calibrate and keep the sensor at least 20cm away from the stuff like metal that may create magnetic field interference.

SCA3300 Temperature Compensation

SCA3300 Temperature Compensation

Embedded highly-integrated Murata SCA3300 MEMS accelerometer
● Excellent bias stability, low noise level and linearity
● Unique mechanical over damping ensuring high performance in harsh environment

RM3100 Magnetometer Compensation Chip

RM3100 Magnetometer Compensation Chip

In-built military-grade PNI RM3100 geomagnetic sensor, measurements are stable over temperature and inherently free from offset drift.
● high resolution, low power consumption
● accurate calculation of heading and orientation

32-bit MCU Processor

32-bit MCU Processor

Built-in low-power 32 Bits core processor
● high-performance reaching 168MHZ
● faster in data processing

WITMOTION Alrogithm Advantages

WITMOTION Alrogithm Advantages

WITMOTION products are derived from the aerospace Satellite Attitude Determination Algorithm.
Built-in core algorithm:
● R&D Dynamic Fusion Algorithm
● Kalman filtering (program filter)
● Digital filtering
● State estimation algorithm
Time and energy saving: No need to study the complicated protocol of MPU6050/ 9250 to analyze the attitude angle.

 Premium Casing and Cable

Premium Casing and Cable

● Casing Size: 55*36.8*24mm / 2.165*1.14*0.95"
● Robust aluminum casing
● IP67 Waterproof
● Dust-resistant
● Premium cable (1 meter)

Certification

Certification

● HWT905 is CE certified, meets EU standards for health, safety, and environmental protection
● WitMotion Shenzhen Co.,Ltd is in conformity with Quality Management System Standard: GB/T19001-2016 idt ISO9001:2015.

Tutorial

Tutorial

● Manual & Datasheet
● Free software for Windows PC (Minimu.exe)
● APP for Android phone
● Instruction video (search WITMOTION on Youtube)
● CH340 & CP2102 serial Drivers
● Sample code including 51 serial, C+, STM32, Arduino, and Matlab

Packing List

Packing List

1 x HWT905-TTL inclinometer
● 1 x 3-in-1 UART converter
● 1x Instruction card printed with QR code of document center
Our Promise:
● 30 days return refund policy for any quality issue
● Quality secured, 100% inspected & tested at factory before shipping
● Remote diagnostics and lifetime technical support by Witmotion engineering team

PC software for Windows

Free & Genuinely Useful Software

Compared with traditional sensor’s simplied serial software, WITMOTION software offers several advantages over competing sensor:
● configurations setting
● dashboard, 3D DEMO, data curve & chart display in real-time
● data record and playback, raw data reviewing, and more
Notice: There is no software for the Linux, Python, or Mac system at present. Witmotion software is provided as free, compatible with the Windows system only, including Win 10, 8, 7, XP.

PC software for Windows

PC software for Windows

3D Display

3D Display

Data Curve Display

Data Curve Display

Configuration

Configuration

WitMotion HWT905 TTL High Accuracy 0.05 ° Military-Grade Sensor Inclinometer 9 Axis AHRS Sensor Waterproof IP67 & Anti-vibration


About WITMOTION

Established in 2014, WitMotion Shenzhen Co.,Ltd aims to become a global leader in attitude sensor, AHRS IMU. Foud out more here in our Witmotion Brand Store on Amazon.

The company is dedicated to make attitude measurement and tilt angle sensing solutions more accessible and easier for engineers around the world. Widely used every day by customers in over 50 countries for energy and electric power, tower control, Monitoring, engineering machinery, medical, academic, integrated system, more developing projects.


WITMOTION' s  R&D Dept.

● 20+professional engineer industry's top R&D team, and has a long-term collaboration with the Beihang University PhD team.

● WitMotion R&D protocol and Dynamic Fusion Algorithm

● over 50+ patents and software program


Research and Development Facilities:

● World's top-level of triaxial nonmagnetic turntable: All finished items will be calibrated through the turntable, ensuring the X Y Z angle's accuracy.

● High& low temperature test chamber, making sure that the sensor can actually work well under -40℃ ~ +85℃ environment

● Vector Network Analyzers(VNA): Bluetooth antenna impedance matching

● 6 degrees of freedom vibration test bench: sensor's high performance and stability secured under vibration and dynamic environment


Premium Components & QC System: All components are selected and certified under a strict quality control system from the procurement, manufacturing process to assembly, inspection.


Automatic Production&Assemble line of Factory:

Automatic Solder Paste Printing, Imported Placement Machine, Multi-temperature Reflow Soldering, Fully Automatic Inspection


Military-grade HWT905-TTL Tilt Angle SensorMilitary-grade HWT905-TTL Tilt Angle SensorMilitary-grade HWT905-RS232 InclinometerMilitary-grade HWT905-RS232 InclinometerMilitary-grade HWT905-RS485 Magnetometer
Military-grade HWT905-RS485 Magnetometer
Military-grade HWT901B-TTL AccelerometerMilitary-grade HWT901B-TTL AccelerometerIndustrial-grade SINDT-RS485 InclinometerIndustrial-grade SINDT-RS485 InclinometerWTGAHRS2 GPS IMUWTGAHRS2 GPS IMU
InterfaceTTLRS232RS485 Modbus RTUTTLRS485 Modbus RTUTTL
CompatibilityWindows PC, Android phone, MCU Arduino, Raspberry pi, etcWindows PC, PLC system, MCU Arduino, Raspberry pi, etc.Windows PC, PLC system, MCU Arduino, Raspberry pi, etc.Windows PC, Android phone, MCU Arduino, Raspberry pi, etcWindows PC, PLC system, MCU Arduino, Raspberry pi, etc.Windows PC, Android phone, MCU Arduino, Raspberry pi, etc
Input Voltage3.3-5V9-36V9-36V3.3-5V9-36V3.3-5V
3-Axis Acceleration
3-Axis Angular velocity (Gyroscope)
3-Axis Angle
3-Axis Magnetic Field
Output Frequency0.2HZ--200HZ0.2HZ--200HZRS485 Modbus RTU0.2HZ--200HZRS485 Modbus RTU0.2HZ--200HZ
HousingAluminum case, IP67 waterproofAluminum case, IP67 waterproofAluminum case, IP67 waterproofAluminum caseAluminum case, IP67 waterproofPlastic case
Main FeaturesMilitary-Grade Accuracy, RM3100 magnetometer& SCA3300 temp compensationMilitary-Grade Accuracy, RM3100 magnetometer& SCA3300 temp compensationMilitary-Grade Accuracy, RM3100 magnetometer& SCA3300 temp compensation, support 128 units multiple-connectionMilitary-Grade Accuracy, RM3100 magnetometer compensationDual-axis tilt angle measurement, support 128 units multiple-connectionChinese Beidou navigation system+ GPS, High-stability IMU sensor

Download Center

Video

Instruction Demo

HWT905 Inclinometer Use Instructions with PC


HWT905 Use Instructions with Android Smartphone


Reviews

  • Josignature

    Dec. 23, 2020

    This accelerometer works as info provided by manufacturer. Really easy to setup and it has excellent sensitivity and performance. The only thing doesn't work is when you try to run a data file saved or try to convert this data; but it save data in txt format and you can manipulate it whatever you want!

  • Ted

    Dec. 23, 2020

    Edit: Tech support did get back to me (the listed tech support e-mail is no longer monitored). The issue, according to tech support, is that the HT905 that was sold requires 9-36V input. If you see "RS232" on the back, that is what it implies.  They indicated they will exchange it at no cost, through Amazon, for the one I want. I wish the item listing would present the specifications more precisely upfront.

    The device seemed to be solid construction & I was looking forward to using a robust outdoor IMU for our project. I would say the documentation on their website is 'fair' (maybe 2-3 -stars); the software utilities work differently than described in the documentation. However, after unpackaging I noticed that the cable strain grommet mount on the IMU case side appears to be 'crooked'. I tried the sensor with their recommended RS232-TLL USB converter device. I could never get any interpretable data from it on any platform, with or without their software that can be downloaded for the device. I e-mailed them a couple times for help and never got any response (they are not in US). I am wondering if it was even tested in the factory before shipping. I wish I could return it. I would stay away from these, or similar products from WIT-MOTION since I'm not convinced there is good QC for these particular sensors. Because of these issues I give it 1 'star'.