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● High precision output data : Pitch Roll Yaw Accleration + Gyro + Angle+ Magnetic field
● Equipped with low consumption bluetooth 5.0, compatible with Andriod & iOS system(support up to 7pcs module testing in the same time, connecting via 1 mobile phone)
● Bluetooth 5.0 support Android and iOS,Small in szie, easy to mount, professional second-development
● TTL level serial portThe patented zero-bias automatic detection calibration algorithm automatically recognizes the motion state of the module and automatically calibrates the gyro bias when the module is stationary.
● 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 mobile phone APP. Tutorial Link: https://wiki.wit-motion.com/english
Specification
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 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
No need to study the complicated protocol of MPU6050/ 9250 to get 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 or unsatisfied order
● 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)
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
3D Display
Data Curve Display
Configuration
Android App (Single-connection)
WT901BLE supports Bluetooth connection with Android smartphones.
Easy connection, simply chooses the module (BLE 5.0 Series), pair with the device, and start using.
Search WitMotion on Google Play Store and download it.
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
 WT901BLECL Inclinometer |  BWT901CL Accelerometer |  BWT61CL Tilt Sensor |  WT901BLE Digital Compass |  Military-grade HWT905 Magnetometer |  WTGAHRS2 GPS IMU | |
| Interface | BLE 5.0, Type-C | Bluetooth 2.0, Type-C | Bluetooth 2.0, Type-C | TTL | RS485 Modbus RTU | TTL |
| Compatibility | Android phone, Windows PC | Android phone, Windows PC | Android phone, Windows PC | Windows PC, Android phone, MCU Arduino, Raspberry pi, etc | Windows PC, PLC system, MCU Arduino, Raspberry pi, etc. | Windows PC, Android phone, MCU Arduino, Raspberry pi, etc |
| Input Voltage | 3.3-5V, in-built battery | 3.3-5V, in-built battery | 3.3-5V, in-built battery | 3.3-5V | 9-36V | 3.3-5V |
| 3-Axis Acceleration | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3-Axis Angular velocity (Gyroscope) | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3-Axis Angle | ✓ | ✓ | ✓ | ✓ | ✓ | ✓ |
| 3-Axis Magnetic Field | ✓ | ✓ | ✓ | ✓ | ✓ | |
| Output Frequency | 0.2HZ-50HZ | 0.2HZ--200HZ | 0.2HZ--100HZ | 0.2HZ--200HZ | 0.2HZ--200HZ | 0.2HZ--200HZ |
| Housing | Plastic case | Plastic case | Plastic case | Aluminum case, IP67 waterproof | Plastic case | |
| Main Features | Value for money, Bluetooth range<50 meters, multiple-connection up to 4 units, 10 hours battery life | Bluetooth range<10 meters, multiple-connection up to 8 units, 4 hours battery life | Bluetooth range<10 meters, multiple-connection up to 8 units, 4 hours battery life | 9-axis High Accuracy sensor, Kalman Filtering | Military-Grade Accuracy, RM3100 magnetometer& SCA3300 temp compensation | Chinese Beidou navigation system+ GPS, High-stability IMU sensor |
Download Center
Complete Tutorial
Video
Instruction Demo
WT901BLE 5 0 Use Instructions with PC
WT901BLE Bluetooth Accelerometer Use Instructions with Android Smartphone
FAQ
Q: Is the iOS APP available now?
A: The iOS APP is under construction at present. The sample code of iOS APP can be provided if customers have requirements.
Link to sample code of iOS APP:
https://drive.google.com/open?id=1hEb_kDNtK1ydkAwWcPWExnVoR7Q4i5NH
Q: Is the sensor compatible with MCU like Arduino?
A: The sensor is Bluetooth 5.0 communication, built-in nRF52832 chip.
If you need to connect the sensor with Arduino via Bluetooth, it is required to build a same nRF52832 chip on Arduino board as a master.
And the sensor can work as slave. So the sensor can communicate. It is recommended that you can study the sensor's communication protocol for research and development.
Please be noted that the service related to the sensor's integration is not supported.
Reviews
Jorge James
they are excellent sensors
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