Introduction

FlutterMindWaveMobile2 is a plugin to connect and receive data from the Neurosky MindWave Mobile 2 using Flutter, a new mobile SDK to help developers build modern apps for iOS and Android.

Cross-Platform

FlutterMindWaveMobile2 aims to offer the most from both the Android Developer Tools 4.2 and iOS Developer Tools 4.8 from Neurosky. Data is fed from the COMM SDK into the EEG Algorithm SDK (see note below).

Note: iOS License Key Requirement for EEG Algorithm SDK

Android by default uses the EEG Algorithm, but iOS requires a license key to use the EEG Algorithm SDK. However, the COMMS SDK (used to feed the EEG Algorithm SDK) is still available and providing values on all channels except Band Power (BP) (see supported algorithms below).

Please contact Neurosky for a client specific license key.

Note: Will only work on actual devices

This plugin will NOT connect in Android Emulator and will NOT build on iOS simulator.

Supported Algorithms

All algorithm data have a fixed output interval of 1 second.

	Android	iOS (with License)	iOS (without License)	Description
Attention (Att)	✔️	✔️	✔️	Attention index ranges from 0 to 100. The higher the index, the higher the attention level.
Meditation (Med)	✔️	✔️	✔️	Meditation index ranges from 0 to 100. The higher the index, the higher the meditation level.
Band Power (BP)	✔️	✔️		EEG bandpowers (in dB) index for: delta, theta, alpha, beta, and gamma.
Eye Blink Detection (Blink)	✔️	✔️	✔️	Eye blink strength (no baseline data collection will be needed).
Signal Quality	✔️	✔️	✔️	Signal quality value of the device ranges from 0 to 200. The lower the value, the better the signal.

Usage

Add flutter_mindwave_mobile_2 as a dependency in your pubspec.yaml file:

dependencies:
  flutter_mindwave_mobile_2: '^0.1.0'

Then import the plugin into your dart file.

import 'package:flutter_mindwave_mobile_2/flutter_mindwave_mobile_2.dart';

Get Bluetooth device ID

This plugin requires the MindWave Mobile 2 Bluetooth device ID. An easy way to accomplish this is with using FlutterBlue. For example:

import 'package:flutter_blue/flutter_blue.dart';

FlutterBlue flutterBlue = FlutterBlue.instance;

var scanSubscription = flutterBlue
    .scan()
    .listen((ScanResult scanResult) {
        var device = scanResult.device;
        var name = device.name;
        if (name == 'MindWave Mobile') {
            var deviceId = device.id.toString();
        }
    });

Create a new FlutterMindWaveMobile2 instance

FlutterMindWaveMobile2 flutterMindWaveMobile2 = FlutterMindWaveMobile2();

Connect

Returns MWMConnectionState

var connectionSubscription = flutterMindWaveMobile2
    .connect(deviceId, licenseKey) // licenseKey is optional for iOS EEG Algorithm
    .listen((MWMConnectionState connectionState) {
        // Handle state
    });

Disconnect

connectionSubscription.cancel();
flutterMindWaveMobile2.disconnect();

Data streams

Algorithm State and Reason

Returns AlgoStateAndReason

var algoStateAndReasonSubscription = flutterMindWaveMobile2
    .onAlgoStateAndReason()
    .listen((AlgoStateAndReason algoStateAndReason) {
        // Handle algo state and reason
    });

Attention

Returns int

var attentionSubscription = flutterMindWaveMobile2
    .onAttention()
    .listen((int attention) {
        // Handle attention
    });

Meditation

Returns int

var meditationSubscription = flutterMindWaveMobile2
    .onMeditation()
    .listen((int meditation) {
        // Handle meditation
    });

Band Power

Returns BandPower

var bandPowerSubscription = flutterMindWaveMobile2
    .onBandPower()
    .listen((BandPower bandPower) {
        // Handle band power
    });

Eye Blink Detection

Returns int

var eyeBlinkDetectionSubscription = flutterMindWaveMobile2
    .onEyeBlink()
    .listen((int eyeBlinkStrength) {
        // Handle eye blink strength
    });

Signal Quality

Returns int

var signalQualitySubscription = flutterMindWaveMobile2
    .onSignalQuality()
    .listen((int signalQuality) {
        // Handle signal quality
    });

Classes

AlgoStateAndReason

Property	Type
state	AlgoState
reason	AlgoReason

BandPower

Property	Type
delta	double
theta	double
alpha	double
beta	double
gamma	double

Enums

MWMConnectionState

Values
disconnected
scanning (not used in package, but used in example with FlutterBlue)
connecting
connected

AlgoState

Values
inited
analysingBulkData
collectingBaseline
pause
running
stop
uninited

AlgoReason

Values
baselineExpired
byUser
cbChanged (Android only collecting baseline changed)
configChanged
noBaseline
signalQuality
userProfileChanged
unknown

Inspiration

This plugin is inspired by react-native-mindwave-mobile, but adds on the EGG Algorithm SDK.

Affiliation

This plugin is not affiliated or sponsored by Neurosky in any way.