Development of SensorLab Application

Didarul Alam Rahat

Completed work

Mobile Engineer

Dart

Flutter

GitHub

Mobile

📱 SensorLab - All-in-One Sensor Toolkit

A comprehensive Flutter application that provides access to all device sensors with an intuitive, multi-language interface

🚀 Features • 📋 Requirements • ⚙️ Setup • 🏗️ Architecture • 📚 Modules • 🤝 Contributing

🚀 Features

🌐 Multi-Language Support

4 Languages: English, Spanish, Japanese, Khmer

500+ Localized Strings: Complete internationalization

Dynamic Language Switching: Change language on-the-fly

📊 Comprehensive Sensor Suite

Motion Sensors: Accelerometer, Gyroscope, Magnetometer

Environmental: Light, Humidity, Noise, Proximity

Location & Navigation: GPS, Compass

Health & Fitness: Heart Rate, Activity Tracking, Calorie Counter

Utility: QR/Barcode Scanner, Flashlight

🎨 Modern UI/UX

Material Design 3: Latest design system

Dark/Light Themes: System-adaptive theming

Responsive Layout: Optimized for all screen sizes

Accessibility: Full screen reader support

📋 Requirements

System Requirements

Flutter SDK: >=3.0.0

Dart SDK: >=3.0.0

Android Studio: Latest version (for Android development)

Xcode: Latest version (for iOS development, macOS only)

Platform Support

Platform Minimum Version Recommended Android API Level 21 (5.0) API Level 33+ iOS iOS 11.0 iOS 15.0+ Web Modern browsers Chrome 90+

Hardware Requirements

RAM: 8GB minimum, 16GB recommended

Storage: 10GB free space

Processor: Intel i5 / AMD Ryzen 5 or better

⚙️ Setup & Installation

1. Prerequisites Setup

Install Flutter SDK

# Download Flutter SDK from https://flutter.dev/docs/get-started/install
# Add Flutter to your PATH
export PATH="$PATH:`pwd`/flutter/bin"

# Verify installation
flutter doctor

Install Android Studio

# Download from https://developer.android.com/studio
# Install Android SDK and Android SDK Command-line Tools
# Setup Android emulator or connect physical device

Configure Development Environment

# Accept Android licenses
flutter doctor --android-licenses

# Install required dependencies
flutter pub global activate flutterfire_cli

2. Project Setup

Clone Repository

git clone https://github.com/Darahat/All-in-One-Sensor-Toolkit.git
cd All-in-One-Sensor-Toolkit

Install Dependencies

# Install Flutter dependencies
flutter pub get

# Generate platform-specific files
flutter packages pub run build_runner build

Configure Gradle (Android)

Ensure your android/build.gradle has:

buildscript {
    ext.kotlin_version = '1.8.22'
    dependencies {
        classpath 'org.jetbrains.kotlin:kotlin-gradle-plugin:$kotlin_version'
        classpath 'com.android.tools.build:gradle:8.1.0'
    }
}

Generate Localization Files

# Generate localization classes
flutter gen-l10n

3. Running the Application

Development Mode

# Run on connected device/emulator
flutter run

# Run with specific flavor
flutter run --flavor development

# Run with hot reload enabled (default)
flutter run --hot

Build for Production

# Build Android APK
flutter build apk --release

# Build Android App Bundle (recommended)
flutter build appbundle --release

# Build iOS (requires macOS)
flutter build ios --release

# Build for Web
flutter build web --release

4. Environment Configuration

🔐 Android Signing Setup

For building release APKs, you need to configure Android app signing:

# Copy the template file
cp android/key.properties.example android/key.properties

# Generate a keystore (replace with your details)
keytool -genkey -v -keystore android/release-key.jks -keyalg RSA -keysize 2048 -validity 10000 -alias upload

# Edit android/key.properties with your actual values

⚠️ Security Note: Never commit key.properties or keystore files to version control!

For detailed setup instructions, see: Android Setup Guide

🔑 Environment Variables Setup

For optional features (AdMob, API keys), configure environment variables:

# Copy the template file
cp .env.example .env

# Edit .env with your actual values (optional)

⚠️ Security Note: Never commit .env files to version control!

Configuration Overview

The app uses a two-file configuration system:

android/key.properties - Android signing and AdMob App ID

.env - AdMob ad unit IDs and API keys (optional)

Both files are excluded from version control for security.

🏗️ Architecture

Clean Architecture Pattern

📁 lib/
├── 📁 src/
│   ├── 📁 core/                    # Core functionality
│   │   ├── 📁 constants/           # App constants
│   │   ├── 📁 errors/              # Error handling
│   │   ├── 📁 services/            # Core services
│   │   └── 📁 utils/               # Utility functions
│   │
│   └── 📁 features/                # Feature modules
│       ├── 📁 health/              # Health & fitness tracking
│       │   ├── 📁 domain/          # Business logic
│       │   │   ├── 📁 entities/    # Core entities
│       │   │   ├── 📁 repositories/ # Repository interfaces
│       │   │   └── 📁 usecases/    # Business use cases
│       │   ├── 📁 infrastructure/  # External data sources
│       │   ├── 📁 application/     # Application services
│       │   └── 📁 presentation/    # UI components
│       │       ├── 📁 screens/     # Screen widgets
│       │       ├── 📁 widgets/     # Reusable widgets
│       │       └── 📁 providers/   # State management
│       │
│       ├── 📁 accelerometer/       # Motion sensor
│       ├── 📁 gyroscope/          # Rotation sensor
│       ├── 📁 compass/            # Navigation
│       ├── 📁 geolocator/         # GPS tracking
│       ├── 📁 light_meter/        # Ambient light
│       ├── 📁 noise_meter/        # Sound level
│       ├── 📁 humidity/           # Humidity sensor
│       ├── 📁 proximity/          # Proximity detection
│       ├── 📁 heart_beat/         # Heart rate monitor
│       ├── 📁 qr_scanner/         # QR/Barcode scanner
│       ├── 📁 flashlight/         # Device flashlight
│       └── 📁 app_settings/       # Application settings
│
├── 📁 l10n/                       # Localization files
│   ├── 📄 app_en.arb             # English translations
│   ├── 📄 app_es.arb             # Spanish translations
│   ├── 📄 app_ja.arb             # Japanese translations
│   └── 📄 app_km.arb             # Khmer translations
│
└── 📄 main.dart                   # Application entry point

📚 Modules Documentation

Core Modules

Module Description Documentation 🏥 Health Activity tracking, calorie counter, health metrics 📖 Health Module 📊 Accelerometer 3-axis acceleration measurement 📖 Accelerometer Module 🌀 Gyroscope Device rotation and angular velocity 📖 Gyroscope Module 🧭 Compass Magnetic field and navigation 📖 Compass Module 📍 Geolocator GPS positioning and location services 📖 Geolocator Module 💡 Light Meter Ambient light measurement 📖 Light Meter Module 🔊 Noise Meter Sound level monitoring 📖 Noise Meter Docs 💧 Humidity Environmental humidity sensing 📖 Humidity Module 📏 Proximity Distance detection sensor 📖 Proximity Module ❤️ Heart Beat Heart rate monitoring via camera 📖 Heart Beat Module 📱 QR Scanner QR code and barcode scanning 📖 QR Scanner Module 🔦 Flashlight Device flashlight control 📖 Flashlight Module ⚙️ App Settings Application configuration 📖 Settings Module

🔧 Integration & Usage

For Developers

Want to use SensorLab features in your own app? We've got you covered!

Guide Description Best For 🚀 Quick Start Template Ready-to-use health app template Beginners, rapid prototyping 📖 Integration Guide Complete feature integration guide Custom implementations 📚 Module Documentation Individual module guides Specific feature integration

Popular Use Cases

Health & Fitness Apps - Activity tracking, user profiles, settings

IoT Sensor Dashboards - Real-time sensor data visualization

Educational Projects - Learning Flutter, sensors, localization

Prototype Development - Quick sensor integration testing

🤝 Contributing

Development Setup

Fork the repository

Create a feature branch: git checkout -b feature/amazing-feature

Commit changes: git commit -m 'Add amazing feature'

Push to branch: git push origin feature/amazing-feature

Open a Pull Request

Coding Standards

Follow Dart Style Guide

Use Flutter Linting

Write tests for new features

Update documentation

📄 License

This project is licensed under the MIT License - see the LICENSE file for details.

Made with ❤️ using Flutter Made with ❤️ by darahat ⭐ Star this repository if you find it helpful! ⭐

flutter dart mobile sensors accelerometer gyroscope compass gps health tracker qr scanner internationalization cross platform android ios real time data clean architecture material design riverpod sensor toolkit measurement app

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Completed work

Posted Dec 3, 2025

Developed SensorLab, a multi-language app for sensor access using Flutter.

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Timeline

Apr 4, 2025 - Oct 15, 2025