● (1) High precision Pitch Roll Yaw (X Y Z axis) Acceleration + Angular Velocity + Angle + Magnetic Field output
● (2) The module integrated high precision gyro accelerometer and geomagnetic field sensor
● (3) Wireless Bluetooth serial port communication,Bluetooth connection range≤10m, embedded in-built battery, also can connect with cable, professional for second-development
● (4) BUY WITH CONFIDENCE: R&D by WitMotion Team( 6-year Professional Attitude Measuring Solution Provider). Providing PC software, mobile phone APP, driver, manual, datasheet etc. Tutorial Link: https://github.com/WITMOTION/BWT901CL
● (5) What you get: 1 x WitMotion BWT901CL Bluetooth inclinometer + 1 x charging line +1 x instructions card, Lifetime friendly customer service (Please kindly contact us if you need any help)
BWT901BCL’s scientific name is the AHRS IMU sensor. A sensor measures 3-axis angle, angular velocity, acceleration, magnetic field, barometer. Its strength lies in the algorithm which can calculate the three-axis angle accurately. The robust housing and the small outline makes it perfectly suitable for industrial retrofit application such as motion capturing, engineering machine monitoring, etc.
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.
Working Temperature: -40℃ ~ +85℃
Battery life: about 4 hours
Data output frequency：0.2-200Hz
Interface: Type-C, Bluetooth 2.0
Baud Rate: 115200 (default, can not be changed)
Voltage: 3.3-5V, built-in rechargeable battery (260mAh capacity, 3.7V)
Output Content: 3-axis Acceleration+Angle+Angular Velocity+Magnetic Field+Quaternion+Air Pressure+Height
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), Barometer (1m)
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 BWT901B)
● In-built HC-06 Bluetooth chip: coverage range within 10 meters (without obstacles like walls)
● Built-in Cortex-M0 core processor which can operate reaching 48MHZ, faster speed in the data processing
● Embedded highly-integrated MEMS accelerometer and gyroscope sensor, more stable and reliable in attitude measurement
● Net Weight: 20g
● Size: 51.3mm x36mm X15mm/ 2.02" x 1.41" x 0.59"
● Two Wings design at the edge, better for installation
● User Friendly: LED lights Indicator, standby (blue flashes), pairing( blue light lits on), Charging( red light), fully charged( red disappear)
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.
● BWT901BCL supports multiple-connection with 1 Windows computer at the same time.
● There is a software for multi-connection inside the tutorial.
1. The multiple-connection is required to buy the tool, USB-HID adapter from Witmotion store. (search ASIN: B07PWZ3H1N )
2. Each BWT901CL can only pair with 1 USB-HID adapter.
● 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
● BWT901BCL 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.
● Manual with detailed instructions
● Datasheet with complete communication protocol for developing
● App for Android phone (search WITMOTION on Play Store)
● Two PC software (single-connection & multi-connection )
● Instruction demo video (search WITMOTION on Youtube)
● CH340 serial Drivers
● 1x BWT901BCL Bluetooth 2.0 inclinometer (UART version))
● 1* Type-C charging cable (25cm))
● 1x Instruction card printed with QR code of document center
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
Data Curve Display
Android App (Single-connection)
BWT901BCL supports Bluetooth connection with Android smartphones.
Easy connection, simply chooses the module (9-axis Series), pair with the device, and start using.
Search WitMotion on Google Play Store and download it.
Real-time Data Viewing
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||WT901 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 Angular velocity (Gyroscope)||✓||✓||✓||✓||✓||✓|
|3-Axis Magnetic Field||✓||✓||✓||✓||✓|
|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|
BWT901CL Multi-connection Instructions DEMO
BWT901CL Bluetooth Inclinometer Use Instructions with Android Smartphone