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Highlights
WT901BLE’s scientific name is the AHRS IMU sensor. A sensor measures 3-axis angle, angular velocity, acceleration, magnetic field. Its strength lies in the algorithm which can calculate the three-axis angle accurately. It is 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.
- High precision Roll Pitch Yaw (X Y Z axis) Acceleration + Angular Velocity +Angle + Magnetic Field output
- 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)
- Working Temperature: -40℃ ~ +85℃
- Data output frequency：0.2-50Hz
- Interface: serial TTL, Low-energy Bluetooth 5.0
- Baud Rate: 115200 (default, can not be changed)
- Output Content: 3-axis Acceleration+Angle+Angular Velocity+Magnetic Field+Quaternion
- Range: Acceleration (±16g), 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.
Hardware Analysis
- In-built nRF52832 Bluetooth chip: coverage range within 50 meters
- Built-in Cortex-M0 core processor which can operate reaching 168MHZ, faster speed in the data processing
- Embedded highly-integrated MEMS accelerometer and gyroscope sensor, more stable and reliable in attitude measurement
Plastic Casing
- Net Weight: 1g
- Size: 20.4mm x15mm X2mm/ 0.8" x 0.6" x 0.08"
WITMOTION Algorithm 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
No need to study the complicated protocol of MPU6050/ 9250 to analyze the attitude angle.
Multiple-Connection
- WT901BLE supports up to 4 devices multiple-connection with 1 Android phone at the same time via Bluetooth.
- There is a multi-BLE APP inside the tutorial. (without curve display)
Notice: The iOS APP is under construction at present. The sample code of iOS APP can be provided if customers have requirements.
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
Certification
- WT901BLE 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
- Manual with detailed instructions
- Datasheet with complete communication protocol for developing
- Free software for Windows PC (Minimu.exe)
- Two APP for Android phone (single-connection & multi-connection)
- Instruction demo video (search WITMOTION on Youtube)
- CH340 & CP2102 serial Drivers
Packing List
- 1x WT901BLE BLE 5.0 inclinometer module
- 2* Six pin male header (1x6)
- 1x Instruction card printed with QR code of document center
Note: The battery is not involved. A power source of 3.3-5V is recommended.
For finished item with casing and battery, the WT901BLECL is suggested. (ASIN: B07T2C97WN)
PC software for Windows
3D Display
Data Curve Display
Configuration
Android APP
Config Menu
Real-time Data Viewing
Recorded Data
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
Kindle Customer
2025-08-28 10:31:32
Customer service is very good, and the device integrates well with Windows and Android. They also provide libraries for developers, and the developer support is very good also.
Jerry H.
2025-05-20 16:24:19
The technical support person (Kyle) was proactive in reaching out and responded to each inquiry. This working relationship is off to a good start and I anticipate it will continue to provide the needed support needed to be successful.
Jorge James
2024-12-16 09:36:04
they are excellent sensors
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