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Highlights
WT61P’s scientific name is the AHRS IMU sensor. A sensor measures 3-axis angle, angular velocity, acceleration. WitMotion WT61P integrates a high-precision gyroscope, accelerometer, and adopts a high-performance microprocessor, advanced dynamics fusion algorithm, and Kalman dynamic filtering algorithm to quickly analyze the module's current real-time motion posture.
- By WitMotion advanced digital filtering technology, the sensor can effectively reduce measurement noise and improve measurement accuracy
- With its in-built posture solver and the dynamic Kalman filter algorithm, the sensor can accurately output the current posture of the product in a dynamic environment. The measurement accuracy of the X and Y axis can reach 0.05°, and the stability is extremely high.
- 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: <25mA
- Voltage: 3.3-5V (requiring a power source of 3.3-5V)
- Data output frequency：0.2-200Hz
- Baud Rate: 4800-230400 (adjustable)
- Output Content: 3-axis Acceleration+Angle+Angular Velocity+Quaternion
- Range: Acceleration (±6g), Gyroscope (±2000°/s), Angle (X, Z-axis: ±180°, Y ±90°)
- Resolution: Acceleration (0.005g), Gyroscope (0.61°/s)
- Angle Accuracy(after calibrated): X, Y-axis: 0.05° (Static) , X, Y-axis: 0.1° (Dynamic)
Note: There will be acculated error on Z-axis angle by time when moving. It is required to calibrate.
The bulk inquiry is welcome. Production capacity is 100,000pcs / month. If you have any interest or need any help, please feel free to reach us.
Hardware Analysis
- Embedded highly-integrated MEMS accelerometer and gyroscope sensor, more stable and reliable in attitude measurement
- Premium power chip ensuring stable supply voltage
- 4-layer PCB design and using stamps holes gold-immersion process to prevent oxidation
Cortex-M0 core processor
Built-in Cortex-M0 core processor which can operate reaching 48MHZ, faster speed in the data processing
Connection with External GPS Module
The attitude sensor module can be connected to all GPS modules that comply with the NMEA-0183 specification to form a GPS-IMU inertial navigation system to obtain information such as longitude, altitude, heading, speed, and displacement.
Such as the NEO-6MGPS module.
Note: The GPS module is not included inside the package.
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
Time and energy saving: No need to write a filtering program or study the complicated protocol of MPU6050/ 9250 to analyze and collect the attitude angle data.
Small in Size
With its clear circuit board design, orderly soldering joints, the extended soldering scheme is diverse. Easy to solder and mount to customer's board.
- Net Weight: 1g
- Interface: TTL / IIC
- Size: 15.24mm x15.24mm X2mm/ 0.6" x 0.6" x 0.08"
- Humanity design, PIN connection in two rows orderly. For details, please check the datasheet.
Note: Operating temperature: -40℃ ~ +85℃
Example Source Code
Thanks to its diverse interface and small size, it is extremely suitable for the embedded systems. The sample codes would be provided to reduce the work and time spent on the writing program of MCU.
- Provided codes including 51 serial, C++, C#, STM32, Arduino, and Matlab
Tutorial
- Manual & Datasheet
- Free software for Windows PC (Minimu.exe)
- APP for Android phone
- Instruction video (search WITMOTION on Youtube)
- CH340 & CP2102 serial Drivers
Packing List
- 1x WT61P inclinometer module
- 2* Six pin male header (1x6)
- 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
3D Display
Data Curve Display
Configuration
Android App interface
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 sensors, 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
Michael Taylor
Reviewed in the United States on July 20, 2023
The sensors perform pretty well for being $30 sensors. There is definitely a fair bit of work necessary if you are not familiar with how these things work and are trying to use your own software instead of the manufacturer’s. That being said, once they are configured to your liking, they mostly work well.I may have gotten a defective unit(s) but I purchased two and had the same problem with both: The TX/RX channels do not appear to work, even when using the manufacturer’s software. Thankfully, the I2C channels worked fine and they are what I really wanted to use anyways.The support team went above and beyond and helped me as best they could, given that I am someone who started this project with no understanding of how to use these at all. Special thanks to Ms. Luo on the Wit Motion support team for her help.
Customer
Reviewed in the United States on March 9, 2022
Z-axis error is described in the product introduction: "Note: There will be acculated error on Z-axis angle by time when moving. It is required to calibrate." But did not expect it could be that much.In my testing, I rotated the sensor around Z-axis 180 degrees two or three times in normal speed (not fast), the Z-axis angle error will be too much (tens of degree). The only calibration I found is Zero the Z-axis angle but it doesn't help in reducing the error.
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