/SEAingBreathDocs

Additional materials for project "SEAingBreath"

This is not complete tutorial, but there is a complete source code for Android Bridge App and Unity App

How to use MySignals HW with Android phone using Unity 3d

What is needed:

Basic concept

You have to run two applications on Android: BridgeApp and UnityApp. BridgeApp is receiving data coming from MySignals BLE module over Bluetooth and sending it to the UnityApp which is Unity app using a custom Android plugin. Sender is always running in the backround as Android service

Arduino setup

  1. Install Arduino IDE
  2. Download arduino library. If this link broken you can download latest version here MySignals Hardware SDK
  3. Add all .zip libraries one by one to Arduino: Sketch > Include Library > Add .ZIP Library
  4. Connect your board to computer. If there is no green light on the board just check the connection between mySignals board and Arduino Uno is strong.
  5. Select board: Tools > Board > Arduino/Genuino Uno
  6. Select port: Tools > Port > usually it should be something /dev/cu.usbmodem1411/
  7. Upload some examples to the board to make sure everything is working. Open File > Examples > MySignals > Sensor > sensor_airflow then upload: Sketch > Upload and wait untill the message "upload done" appear. Now you can open Tools > Serial monitor to check data coming from the sensor. If you see weird characters just try to change baud at the bottom right.

Android Studio

  1. Create new project App Name : MySignalsReceiver, Company domain : yourname.com > next > Target Android devices: default settings > Empty Activity : MainActivity
  2. Go to Res > Layout > Activity_main.xml, double click it, drag button to component tree. Repeat for the second button.
  3. Go to Res > Values > Strings, open in Editor, press plus button, key: send button, Devault value: Start, the same thing for the Stop button.Rename buttons IDs as start_button and stop_button respectively.
  4. In Main_activity.java add 2 functions:
/** Called when the user taps the Start button */
    public void onStart(View view) {
        // Do something in response to button
    }

    /** Called when the user taps the Stop button */
    public void onStop(View view) {
        // Do something in response to button
    }
  1. If you see View is highlighted with red, press Alt+Enter and Import class in drop-down menu.
  2. Go to the button properties and rename the buttons.
  3. Go to AndroidManifest.xml and paste this code after </application>
/** Called when the user taps the Start button */
    public void onStart(View view) {
        // Do something in response to button
    }

    /** Called when the user taps the Stop button */
    public void onStop(View view) {
        // Do something in response to button
    }

<uses-permission android:name="android.permission.ACCESS_COARSE_LOCATION"/>
    <uses-permission android:name="android.permission.ACCESS_FINE_LOCATION"/>
    <uses-permission android:name="android.permission.BLUETOOTH" />
    <uses-permission android:name="android.permission.BLUETOOTH_ADMIN" />
    <uses-permission android:name="android.permission.BLUETOOTH_PRIVILEGED" />

    <uses-feature
        android:name="android.hardware.bluetooth_le"
        android:required="true" />

This allows bluetooth devices search.

Paste this code into the MainActivity. Don't forget to replace package com.name to your name.

Now we have to download and add MySignals Android SDK. Copy the unzipped file in Finder and go to to Project, open App and go to libs, select libs folder and press cmd+v. Then select mysignalsconnect.jar, right click > add as library.

Now we'll create a new class BLEService for Bluetooth service.