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| − | = '''WT901B | AHRS IMU Sensor''' =
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| − | With the WT901B IMU sensor device one can detect acceleration, angle, angular velocity, magnetic filed and air pressure. The both robust and small product is perfectly suitable for smartwatches.
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| − | == Product Features ==
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| − | === Built-in sensors ===
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| − | [[File:Accelerometer.png|50px|Accelerometer]]
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| − | Accelerometer: Acceleration X Y Z, 3-axis
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| − | [[File:Gyroscope.png|50px|Gyroscope]]
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| − | Gyroscope: Angular Velocity X Y Z, 3-axis
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| − | [[File:Magnetometer.png|50px|Magnetometer]]
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| − | Magnetometer: Magnetic Field X Y Z, 3-axis
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| − | [[File:Barometer.png|50px|Barometer]]
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| − | Barometer: Air Pressure 1-Axis
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| − | === Board Dimensions ===
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| − | [[File:BoardSize.png|100px|WT901B Size]]
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| − | Size: 15mm x 15mm x 2mm, Weight: 1g
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| − | Tolerance Size & Weight: +/- 0.1
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| − | === Board Pin Definition ===
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| − | [[File:BoardPinDefinition.png|300px|WT901B Pin Definition]]
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| − | * VCC: 3.3-5V input supply
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| − | * RX: Serial data input, TTL interface
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| − | * TX: Serial data output, TTL interface
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| − | * GND: Ground
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| − | * DO: Analog input, digital input and output, PWM
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| − | * D1: Analog input, digital input and output, PWM, connect GPS
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| − | * D2: Analog input, digital input and output, PWM
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| − | * D3: Analog input, digital input and output, PWM
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| − | * SDA: I2C signal line
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| − | * SCL: I2C clock line
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| − | == How to get it to work ==
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| − | === Connecting to an ESP32 ===
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| − | We need to connect the four pins VCC, RX, TX and GND of the WT901B to the corresponding pins of the ESP32. Therefore, we need to connect WT901B …
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| − | * ...VCC to the power supply (3-5V works) of our microcontroller’s 3.3V pin
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| − | * ...GND to one of the GND pins on our microcontroller
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| − | * ...TX to one of the corresponding pins on our microcontroller
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| − | * ...RX to one of the corresponding pins on our microcontroller
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| − | '''[https://joy-it.net/files/files/Produkte/SBC-NodeMCU-ESP32/SBC-NodeMCU-ESP32-Anleitung-2021-06-29.pdf Pin-Out Joy-it NodeMCU-ESP32 ]'''
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| − | === Required Library ===
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| − | * Download and save JY901.h:
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| − | ** Go to: '''[https://drive.google.com/drive/folders/1F2oTeQccvxNKxq6nW6isxhYecPMagr8M]'''
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| − | ** Download Sample Code zip folder
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| − | ** Unzip the folder and navigate to Arduino > Arduino > JY901SerialMega2560
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| − | ** Add folder with files to the library folder of your project
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| − | * import library in your main file: #include <JY901.h>
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| − | === Code Example ===
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| − | <syntaxhighlight lang="python" line='line'>
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| − | #include <Arduino.h>
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| − | #include <Wire.h>
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| − | #include <JY901.h>
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| − | void setup() {
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| − | Serial.begin(115200);
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| − | JY901.StartIIC();
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| − | }
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| − | void loop() {
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| − | //print received data. Data was received in serialEvent;
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| − | JY901.GetAcc();
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| − | Serial.print((float)JY901.stcAcc.a[0]/32768*16);
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| − | JY901.GetGyro();
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| − | Serial.print((float)JY901.stcGyro.w[0]/32768*2000);
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| − | JY901.GetAngle();
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| − | Serial.print((float)JY901.stcAngle.Angle[0]/32768*180);
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| − | JY901.GetMag();
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| − | Serial.print(JY901.stcMag.h[0]);
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| − | }
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| − | </syntaxhighlight>
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| − | For more Code Examples, use the drive folder provided by WITMOTION: '''[https://drive.google.com/drive/folders/1F2oTeQccvxNKxq6nW6isxhYecPMagr8M]'''
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| − | == Instructional Video ==
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| − | Please insert video from uni2work
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| − | == Additional links ==
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| − | ==== Official GitHub Page Witmotion ====
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| − | https://github.com/WITMOTION/
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| − | ==== Official GitHub Page Witmotion WT901B Sensor ====
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| − | https://github.com/WITMOTION/WT901B
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| − | ==== Datasheet ====
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| − | https://raw.githubusercontent.com/WITMOTION/WT901B/master/WT901B%20Datasheet.pdf
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| − | ==== Manual ====
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| − | https://raw.githubusercontent.com/WITMOTION/WT901B/master/WT901B%20Manual.pdf
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| − | ==== Official Google Drive Folder ====
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| − | https://drive.google.com/drive/folders/1F2oTeQccvxNKxq6nW6isxhYecPMagr8M
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| − | ==== Sources of the Pictures ====
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| − | All the pictures where taken from the official WT901B Datasheet by WITMOTION.
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