hwt31 high attitude angle senor specification

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HWT31 High Attitude Angle Senor

SPECIFICATION

Model ： HWT31

Description ：High precision 2 axis attitude angle sensor

Quality control system standard: ISO9001:2016

Tilt switch production standard：GB/T191SJ 20873-2016

Criterion of detection：GB/T191SJ 20873-2016

Revision date：2019.12.17

Link to tutorial of HWT31 :(software, manual, etc.):

https://drive.google.com/file/d/1gKsY0beKHkvC_4E90ObW40cTSKM0RDnH/

https://drive.google.com/file/d/1cu6676F2HA-3wRK-Y5ynb4SEfIEAMp9a/

https://drive.google.com/file/d/1gKsY0beKHkvC_4E90ObW40cTSKM0RDnH/

https://drive.google.com/drive/folders/1I6sBC-8Q3_vtY-GrFDZbWJZJFk7UnNfO

https://www.youtube.com/channel/UCxBLgvYQNk-sGVDp42ch-Ug

https://www.facebook.com/attitudesensor/



Catalog

1 Description...................................................................................................- 3 -

2 Product parameters...................................................................................... - 3 -

3 Pin description............................................................................................. - 4 -

4 Axial direction............................................................................................. - 5 -

5 Connection...................................................................................................- 5 -

5.1 Connect with PC software.................................................................- 6 -

5.2 Connect to Phone.............................................................................. - 8 -

5.3 calibration(calibration on PC software).......................................... - 12 -

5.3.1 Accelerometer calibration....................................................... - 12 -

5.4 Data recording.................................................................................- 13 -

5.5 Dormancy and break dormancy...................................................... - 14 -

5.6 measure width................................................................................. - 14 -

6 Application area.........................................................................................- 16 -



1 Description

The HWT31 uses the SCA3300-D01, a high-performance three axis acceleration sensor

based on MURATA's long-term proven capacitive 3D-MEMS technology. The SCA3300-D01

is packaged in a 12-pin plastic case with integrated block sensing components and ASIC

application circuitry. The processed sensor signals are output by a flexible SPI interface. The

design, production and testing of the product are carried out in accordance with high

stability, high reliability and high quality performance requirements. So, the product has an

extremely stable output over a wide range of temperatures and vibrations and is also

self-testing.

An internal voltage stabilizing circuit module, voltage 3.3v~5v, pin compatible with the

3.3V/5V embedded system.

The advanced Kalman filtering technology of this product can effectively reduce the

measurement noise and improve the measurement accuracy.

Stamp hole gold plating PCB design, can be embedded in the user´s PCB board.

2 Product parameters



1) Voltage: 3.3V-5V

2) Current: 5.5~6 mA

3) Size : 15.24mmx 15.24mm X 5mm

4) Pad pitch: up and down100mil (2.54mm), left and right 600mil(15.24mm).

5) Measuring dimensions:

Acceleration: X Y Z

Angular Velocity: X Y

6) Range: Acceleration:±16g

Angle: ±90°

7) Temperature compensation.

8) Attitude stabilization measurement: 0.05°

9) Acceleration precision: ±15mg.

10) Error: 0.05°

11) Data output: time, acceleration, angle.

12) Data output frequency 10Hz.

13) Baud rate: 115200

14) Extended port function: Digital output

3 Pin description



Note: D0 D1 No function

4 Axial direction

As shown in the figure above, the coordinates of the module are indicated, and

the right is the X-axis, the upper is Y axis, the Z axis is perpendicular to the surface

of the paper to yourself. The direction of rotation is defined by the right hand rule.

that is, the thumb of the right hand is pointed to the axial direction, and the four is

the direction of the bending of the right hand.

5 Connection



5.1 Connect with PC software

Note: Please download .net framework4.0 the users who cannot run the PC Software:http://www.microsoft.com/zh-cn/download/details.aspx?id=17718

Hardware connection :

VCC = 3.3V , TX = RX ,RX = TX, GND = GND

Module 6 in 1 Convert:

Driver installation:

Fisrt, install the driver CP2102 when we used the USB serial module ,after installed

the driver. then get the corresponding Com number in the device manager. Driver

as followed:

https://wiki.wit-motion.com/english/doku.php?id=communication_module

http://www.microsoft.com/zh-cn/download/details.aspx?id=17718

https://wiki.wit-motion.com/english/doku.php?id=communication_module



Then Open the software “MiniIMU.exe” and select the Com number

which you have got in the device manager before.

Click the menu “Type” , Select the model as “WT31” in the software.



Click the menu “Baud ”in the software and then select 115200, then the software

will show the data.

5.2 Connect to Phone

1) Install the app in the Phone, then turn on the Bluetooth in the Phone.



APP download address:

https://wiki.wit-motion.com/english/doku.php?id=module

2）choose WT301

3)choose 115200





Then the data will show

4) Calibration(calibration on phone)

Please keep the HWT31 on the horizontal level and make the “acceleration

calibration” as below:



1) Accelerometer Calibration

The accelerometer calibration is used to remove the zero bias of the

accelerometer. When the sensor is out of the factory, there will be different

degrees of bias error. After manual calibration, the measurement will be

accurate.

1、Methods as below: Firstly keep the module horizontally stationary, click

“Acceleration”, after 1~2s the acceleration X Y Z value will at 0 0 1. X Y angle:

0°.After calibration the value will be accurate.



5.3calibration(calibration on PC software)

5.3.1 Accelerometer calibration

The accelerometer calibration is used to get rid of the null bias of the

accelerometer. There will be different degrees of null bias in the sensors when they

firstly came out of the factory.

The calibration method is as follows:

Firstly, the module is kept horizontal and static, and the calibration is added. After

1 to 2 seconds, the three axial values of the module acceleration will be around 0 0

1 and the X and Y axis angles will be around 0°. The X Y-axis angle is more accurate

after calibration.



5.4 Data recording

There is no memory chip inside the sensor module，but the data can be saved by

PC software

Attention：The button ”Record ” can save the data as a file.



The saved files in the PC software Data.tsv：

5.5Dormancy and break dormancy

Dormancy：The module pauses working and enters the standby state, dormancy

can reduce power consumption.

Break dormancy：The module enters the working state from the standby state.

How to use：The default state of the module is working state，Click “Sleep”in the

“config”of the PC software to enter the standby state, click “Sleep” again the

module will break the dormancy.

5.6measure width

Retrieval Rate： The module output the data within the measurement Retrieval

Rate. Data greater than bandwidth is automatically filtered out.

How to use：Click the “Retrieval Rate” of the “config ” in the PC software.

default is 10 HZ.



PS: The default setting of Static threshold and bandwidth works in most case. you

should not set it any more.



6 Application areaAgricultural machinery Internet of things

Solar energ Power monitoring

Medical instruments Construction machinery

Geological monitoring



WitMotion ShenZhen Co., Ltd

HWT31 Temp-compensation Accelerometer

Contact: Mr. Kyle Tsang

E-mail : [email protected]

Skype: live:kyle_8394

WhatsApp: +86 136 523 39539

Amazon in USA: www.amazon.com/witmotion

Amazon in Canada: www.amazon.ca/witmotion

Amazon in Japan: www.amazon.co.jp/witmotion

Official Direct Store: www.aliexpress.com/store/4709011

Address : Honghai building 1405 Songgang town Baoan District

Shenzhen Guangdong Province China

mailto:[email protected]

https://www.amazon.com/witmotion

https://www.amazon.com/witmotion

https://www.amazon.co.jp/witmotion

hwt31 high attitude angle senor specification

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