WiT WT901SD Manuel utilisateur
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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Tutorial link
Google Drive
Link to instructions DEMO:
WITMOTION Youtube Channel
WT901SD Playlist
If you have technical problems or cannot find the information that you need in the
provided documents, please contact our support team. Our engineering team is
committed to providing the required support necessary to ensure that you are
successful with the operation of our AHRS sensors.
Contact
Technical Support Contact Info
Application
● AGV Truck
● Platform Stability
● Auto Safety System
● 3D Virtual Reality
● Industrial Control
● Robot
● Car Navigation
● UAV
● Truck-mounted Satellite Antenna Equipment
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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Contents
Tutorial link.................................................................................................................... - 2 -
Contact............................................................................................................................ - 2 -
Application......................................................................................................................- 2 -
Contents..........................................................................................................................- 3 -
1 Introduction............................................................................................................... - 5 -
1.1 Warning Statement......................................................................................- 6 -
2 Use Instructions with PC...................................................................................... - 7 -
2.1 Connection Method...................................................................................... - 7 -
2.1.1 Serial Connection............................................................................. - 7 -
2.2 Software Introduction.................................................................................- 9 -
2.2.1 Main Menu........................................................................................ - 9 -
2.2.2 Menu of Configuration..................................................................- 10 -
2.3 Calibration.....................................................................................................- 14 -
2.3.1 Accelerometer Calibration.......................................................... - 14 -
2.3.2 Magnetic Field Calibration.......................................................... - 15 -
2.3.3 Gyroscope Automatic Calibration............................................ - 18 -
2.3.4 Reset Z-axis Angle........................................................................ - 18 -
2.3.5 Reset Height to 0........................................................................... - 18 -
2.4 Configuration............................................................................................... - 19 -
2.4.1 Return Content............................................................................... - 19 -
2.4.2 Output Rate......................................................................................- 20 -
2.4.3 Baud Rate..........................................................................................- 21 -
2.4.4 Calibrate Time.................................................................................- 22 -
2.4.5 Data Recording............................................................................... - 23 -
2.4.6 Data Playback..................................................................................- 25 -
2.4.7 File Conversion................................................................................- 27 -
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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2.4.8 Standby and Wake Up................................................................. - 28 -
2.4.9 Placement Direction......................................................................- 29 -
2.4.10 Bandwidth...................................................................................... - 30 -
2.4.11 Restore Factory Setting............................................................ - 32 -
2.4.12 Set IIC Address............................................................................- 33 -
2.4.13 Set Extended Port....................................................................... - 34 -
2.4.14 6-axis/ 9-axis Algorithm...........................................................- 36 -
3 Offline Record.........................................................................................................- 37 -
3.1 Instructions.................................................................................................. - 37 -
3.2 Read Stored Date.......................................................................................- 38 -
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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1 Introduction
The WT901SD is a multi-sensor device detecting acceleration, angular
velocity, angle as well as magnetic filed. The small outline makes it perfectly
suitable for industrial retrofit applications such as condition monitoring and
predictive maintenance. Configuring the device enables the customer to
address a broad variety of use cases by interpreting the sensor data by smart
algorithms.
WT901SD’s scientific name is AHRS IMU sensor. A sensor measures 3-axis
angle, angular velocity, acceleration, magnetic field. Its strength lies in the
algorithm which can calculate three-axis angle accurately.
WT901SD is an CE standard accelerometer. It is employed where the highest
measurement accuracy is required. WT901SD offers several advantages over
competing sensor:
• Heated for best data availability: new WITMOTION patented zero-bias
automatic detection calibration algorithm outperforms traditional
accelerometer sensor
• High precision Roll Pitch Yaw (X Y Z axis) Acceleration + Angular Velocity +
Angle + Magnetic Field output
• Low cost of ownership: remote diagnostics and lifetime technical support by
WITMOTION service team
• Developed tutorial: providing manual, datasheet, Demo video, free software
for Windows computer, APP for Android smartphones , and sample code for
MCU integration including 51 serial, STM32, Arduino, Matlab, Raspberry Pi,
communication protocol for project development
• WITMOTION sensors have been praised by thousands of engineers as a
recommended attitude measurement solution
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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1.1 Warning Statement
Putting more than 5 Volt across the sensor wiring of
the main power supply can lead to permanent damage
to the sensor.
VCC cannot connect with GND directly, otherwise it
will lead to the burning of the circuit board.
For proper instrument grounding: use WITMOTION
with its original factory-made cable or accessories.
For secondary developing project or integration:
use WITMOTION with its compiled sample code.
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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2 Use Instructions with PC
For configuration setting, it is recommended to connect with the PC software
before offline record.
2.1 Connection Method
PC software is only compatible with Windows system.
Link to WT901SD’s demo video
2.1.1 Serial Connection
Step 1. Connect the sensor with a serial converter
PIN Connection:
VCC - 5V
TX - RX
RX - TX
GND - GND
(When connecting with computer, VCC-5V is recommended.)
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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Recommended tools:
3-in-1 serial converter 6-in-1 serial converter
Step 2. Unzip the software and install the driver CH340 or CP2102
(Depending on which accessory for usage.)
Link to tutorial of 3-in-1 serial converter/ TTL serial cable (CH340 driver)
Link to tutorial of 6-in-1 serial converter (CP2102 driver)
Step 3. Plugin the converter to computer and confirm the “com port” in device
manager
Step 4. Open the software(Minimu.exe)
Data will appear after auto-search finishes
Notice: If not successful, please operate manually
Choose the com port and baud rate 9600, data will be shown on the software.
WT901SD | manual v0707 | http://wiki.wit-motion.com/english
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2.2 Software Introduction
Link to download software
2.2.1 Main Menu
Main Menu of software
Button
Function
File
Launch recorded HEX file (Bin format)
Tools
Hide or display tools box on left side
Record
Record function
3D
3D DEMO
Config
Configuration setting
Help
Language
English or Chinese
Bluetooth Set
Binding device or unbind
Firmware update
Option for firmware update
About Minimu
Info about Minimu.exe
Factory test
For manufacturer internal test only
Auto-search
Auto searching the sensor
Port
Com port selection
Baud
Baud rate selection
Type
Fixed setting as Normal for WT901SD
Open
Open com port
Close
Close com port
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