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Related Manuals for WiT WT901C
Summary of Contents for WiT WT901C
- Page 1 USER MANUAL WT901C(RS232) Inclinometer Sensor WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 1 -...
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Page 2: Tutorial Link
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 WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 2 -... -
Page 3: Table Of Contents
2.4.3 Baud Rate ..................- 22 - 2.4.4 Data Recording ................- 23 - 2.4.5 Data Playback .................. - 25 - 2.4.6 Standby and Wake Up ..............- 27 - 2.4.7 Placement Direction ..............- 28 - WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 3 -... - Page 4 4.2 STM32 ......................- 41 - 4.3 Raspberry pi ....................- 41 - 4.4 C# ........................- 41 - 4.5 C++ ......................... - 42 - 4.6 Matlab ......................- 42 - WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 4 -...
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Page 5: Introduction
Its strength lies in the algorithm which can calculate three-axis angle accurately. WT901C is employed where the highest measurement accuracy is required. It offers several advantages over competing sensor: • Heated for best data availability: new WITMOTION patented zero-bias... -
Page 6: Warning Statement
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. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 6 -... -
Page 7: Use Instructions With Pc
Serial Connection Step 1. Connect the sensor with a serial converter PIN Connection: VCC - 3.3~5V TX - Yellow RX - Green GND - GND (When connecting with computer, VCC-5V is recommended.) WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 7 -... - Page 8 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. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 8 -...
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Page 9: Software Introduction
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 WT901C Open Open com port Close Close com port WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 9 -... -
Page 10: Menu Of Configuration
Menu of Configuration Menu of Configuration Button Function Read Config Reading the current configuration Lock Lock the sensor Unlock Unlock the sensor Calibrate Time Calibration time of chip Save Config Save configuration WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 10 -... - Page 11 WTGAHRS1, HWT901B) Reset Z-axis Angle Reset Z-axis angle to 0 degree, not available for WT901C in 9-axis algorithm Angle Reference Setting current angle as 0 degree Gyro Auto Calibrate Auto-calibration of gyroscope WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 11 -...
- Page 12 IMU series, such as WTGAHRS1, WTGAHRS2 Quaternion Quaternion data output Positioning Accuracy Option for GPS positioning accuracy output, including Satellite quantity, PDOP, HDOP, VDOP data, only for GPS IMU series, such as WTGAHRS1, WTGAHRS2 WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 12 -...
- Page 13 Menu of Port D0 Model Extended port D0 D1 Model Extended port D1 D2 Model Extended port D2 D3 Model Extended port D3 Pulse width Pulse width of PWM Cycle Cycle of PWM WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 13 -...
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Page 14: Calibration
After calibration, the measurement will be accurate. Methods: Step 1. Keep the module horizontally stationary Step 2. Click the accelerometer calibration Step 3. Click the “Start calibration”and wait for 3 seconds Step 4. Click “Complete Calibration” WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 14 -... -
Page 15: Magnetic Field Calibration
Usually, the magnetic field sensor will have a large zero error when it is manufactured. If it is not calibrated, it will bring a large measurement error, which will affect the accuracy of the measurement of the z-axis Angle of the heading Angle. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 15 -... - Page 16 Step 1. Open the Config menu Step 2. Click the magnetic field calibration button. click the “Start calibration” Step 3. Slowly rotate the module 360° around X, Y, Z, 3-axis accordingly WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 16 -...
- Page 17 Step 4. After rotation, click “End calibration” Successful result: Most of data dots will be within the ellipse. If not successful, please stay away from the objective that can create magnetic field interference. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 17 -...
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Page 18: Gyroscope Automatic Calibration
The gyroscope calibration is to calibrate the angular velocity, and the sensor will calibrate automatically. It is recommended that the automatic calibration of gyroscopes can be inactivated only if the module rotates at a constant speed. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 18 -... -
Page 19: Reset Z-Axis Angle
Z axis backs to 0 degree in the module data bar. 2.3.5 Reset Height to 0 Only available for the module built-in barometer like WT901B, HWT901B, WTGAHRS1, WTGAHRS2. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 19 -... -
Page 20: Configuration
Taking WT901C as an example, the default output of the module is acceleration, angular velocity, angle, and magnetic field. Notice: If choosing the GPS Original, there will be no other data output. -
Page 21: Output Rate
To put it simply, if the return rate is high, the baud rate should also be set higher, generally 115200. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 21 -... -
Page 22: Baud Rate
Note: After the change, the module will no longer output data at the original baud rate. The data will be output only when the baud rate that has been changed is selected on the PC software again. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 22 -... -
Page 23: Data Recording
2.4.4 Data Recording Method are as follows: Step 1: Click “Record” and “Begin” Step 2: Click “Stop” WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 23 -... - Page 24 Windows system’s time. The changes in other data is correct. It is highly recommended that data can be pasted to an Excel file. In this way, all data will be shown in order. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 24 -...
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Page 25: Data Playback
Recorded data playback method: Step 1: Disconnect the sensor Step 2: Click “File” Button and then click “Load” Step 3: Choose the original path of software installation and load the Bin file WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 25 -... - Page 26 Step 4: Click “Run” and the Binary file will be playback When playback, the rate can be editable. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 26 -...
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Page 27: Standby And Wake Up
Wake Up: The module enters the working state from the standby state. The module defaults to a working state, in the“Config”of the software, click “Sleep”option to enter the sleep state, click“Sleep”again to release sleep. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 27 -... -
Page 28: Placement Direction
Step 1: Rotate the module 90 degrees around the X-axis Step 2: Place the sensor 90 degrees vertically Step 3: Click “Vertical” as install directions on “Config” menu WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 28 -... -
Page 29: Bandwidth
1. The higher rate of bandwidth setting will lead to the higher fluctuation in data waveform. Conversely, the lower rate of bandwidth, data will become more fluent. For example: Bandwidth as 20Hz, Output rate as 10Hz. The waveform is very steady. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 29 -... - Page 30 For example, if the bandwidth setting is 20Hz, retrieval rate as 100Hz, there will be 5 repeating data. If you prefer there is no repeating data, it is required to increase the bandwidth more than 100Hz. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 30 -...
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Page 31: Restore Factory Setting
Restore Factory Setting Operation method: Connect the WT901C module and the computer through the USB-TTL module, click the setting tab, and click to restore the default. After restoring the factory settings, power on the module again. (This method needs to know the baud... -
Page 32: 6-Axis/ 9-Axis Algorithm
9-axis algorithm: Z-axis angle is mainly calculated and analyzed based on the magnetic field. Z-axis angle will have few drift. The default algorithm of WT901C is 9-axis. If there is magnetic field interference around installed environment, it is recommended to switch to 6-axis algorithm to detect the angle. -
Page 33: Use Instructions With Android Phone
Use Instructions with Android Phone For APP configuration introduction, please referring to the Chapter 2.2 APP Installation Install the APK file, give permission of Location and Storage Link to download Android APP WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 33 -... -
Page 34: Hardware Preparation
Hardware Preparation Connecting with Android smartphone requires a serial cable and a Type-C converter or OTG converter according to phone’s interface. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 34 -... -
Page 35: Connection
“Choose an APP for the USB device”, which means that the device has been detected. Choose “WitMotion”, “ JUST ONCE” or “ALWAYS” is optional. 2. Only CH340 driver can be detected via WitMotion APP. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 35 -... - Page 36 Step 3. Open APP and choose “9-axis Series” as sensor series WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 36 -...
- Page 37 Step 4. Select the baud rate- 9600. After selection and wait for a few seconds, the data will show automatically. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 37 -...
- Page 38 WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 38 -...
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Page 39: Calibration
Step 1. Keep the module horizontally stationary Step 2. Click the “Calibration” menu Step 3. Click the “Acceleration Calibration” and wait for 3 seconds Step 5. Judge the result--confirm if there is 1g on Z-axis acceleration WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 39 -... -
Page 40: Magnetic Field Calibration
Step 4. After rotation, click “Magnetic Calibration Finish” Check the result: The Z-axis angle will have fewer drift than before. Notice: If not successful, please stay away from the objective that can create magnetic field interference. WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 40 -... -
Page 41: Mcu Connection
Link to sample code instructions demo Notice: There is no sample code provided for Linux or Python system at present. Arduino Download link Arduino UNO3 Demo Link STM32 Download link Raspberry pi Tutorial link DEMO link WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 41 -... -
Page 42: Matlab
DEMO link Matlab Receive Sample Code Dataplot DEMO WT901C RS232| manual v0707 | http://wiki.wit-motion.com/english - 42 -...
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