Spin - Motorcycle Companion

Purpose:

Comprehensive motorcycle-focused GPS navigation with advanced ride metrics, emergency features, maintenance tracking, and engine sound analysis. The spinning wheel in the header rotates to reflect your current speed, spinning faster as you ride faster.

📊 Metrics Tab

Ride Session Management: Single button to start/stop rides and sessions simultaneously.
Real-time Dashboard: Current speed, max speed, average speed, lean angles, distance, elevation.
Cornering Analysis: Detects corners using GPS curvature and lean angle, calculates cornering G-forces and speeds.
Elevation Profile: Live chart showing altitude changes with total elevation gain.
Lean Angle Indicator: Visual gauge showing current and maximum lean angles.
Acceleration Timer: Measures 0-100 km/h (customizable target) with achievement popup.
Statistics Display: Shows both current ride data and aggregated data from all saved sessions.

🎵 Engine Sound Analysis

Real-time RPM Monitoring: Uses microphone to detect engine RPM from sound frequencies.
Gear Position Estimation: Automatically estimates current gear based on speed/RPM ratio.
Engine Health Monitoring: Detects engine knock, exhaust leaks, and unusual vibrations.
Gear Shift Detection: Tracks shift patterns and analyzes shift quality.
Impulse Response Calibration: Record your engine sound for precise RPM calibration (3-second sample).
Sound Spectrum Visualization: Real-time frequency display with waveform visualization.
Calibration Monitor: Debug tool to see real-time frequency and volume readings.

🚀 Navigation Tab

GPS Locator: Lock your position and navigate back with audio cues (initially muted for safety).
Calibrate Sensors: Place phone on bike in riding position and tap to set baseline for lean angle and crash detection calibration.
Auto-Lock Mode: Automatically locks position when motorcycle is stationary for specified time (user adjustable).
Direction Indicator: Visual compass pointing to locked position with real-time updates.
Sonar Locator Parameters: Adjust audio feedback frequency and maximum distance range.
Mute Sound: Toggle audio feedback on/off. Starts muted to prevent unexpected sounds.
Position Map: Real-time tracking with user marker (blue) and lock marker (red).

💾 Session Management

Start Ride & Session: Single button combines ride tracking and session recording.
Auto-Pause & Session: Pauses session time manually or automatically, using values from Nav Section Auto-Lock Mode.
Auto-Save: Automatically saves session data every 30 seconds during rides.
Save Session: Save ride with custom name and optional notes.
Quick Save: Instant save without prompts for quick recording.
Export Session: Download individual ride data as JSON file.
Session History: Browse, view, export, or delete all past rides.
General Statistics: Aggregated data from all sessions with best performance metrics.

🚨 Emergency Tab

Emergency Alert: Send your GPS location to all emergency contacts with one tap.
Crash Detection: Automatically detects crashes when bike remains tilted >45° from normal position for 3+ seconds.
Emergency Contacts: Add multiple contacts with call/message buttons for quick access.
Custom Message: Edit the emergency message template with your personal details.
Emergency Call: Direct access to emergency services (112/911).
Test Features: Safe testing of emergency alerts and crash detection.
Toggle Emergency System: Enable/disable all emergency features as needed.

🔧 Maintenance Tab (Upkeep)

Dual Tracking System: Track maintenance by kilometers OR weeks.
Automatic Progress Tracking: Kilometer-based items update automatically during rides.
Time-based Alerts: Week-based items track time automatically and alert when due.
Visual Progress Bars: Color-coded indicators (green/yellow/red) show maintenance status.
Custom Maintenance Items: Add any maintenance task with custom intervals.
Persistent Storage: All maintenance items saved automatically and persist between app sessions.
Individual Management: Delete specific items or reset all maintenance tasks.
Due Notifications: Get alerts when maintenance is due with option to reset.

🎛️ Advanced Features

Triple-Tap Overlay 1: Quick triple-tap on the Right side of the screen to show enlarged stats display with spinning wheel.
Real-time Wheel Animation: Header wheel spins according to your speed; stops when stationary.
Triple-Tap Overlay 2: Quick triple-tap on the Left side of the screen to show enlarged position map.
Comprehensive Data Export: Export all metrics, sessions, and maintenance data in JSON format.
Offline Capable: Works without internet connection for basic GPS navigation and tracking.
Battery Efficient: Optimized sensors and GPS usage for longer battery life.
Crash Detection Calibration: Learns your normal riding position for accurate crash detection.
Session Load Prompts: Option to load previous sessions or start fresh on app launch.

🏝️ Crete Weather Tab

Real-time Weather Intelligence: Live weather data globally from Open-Meteo.
Real-time Weather Intelligence: Live weather data from official Greek government stations across Crete.
Motorcycle-Specific Alerts: Custom alerts for riding conditions like high winds, heavy rain, and extreme temperatures.
Automatic Risk Assessment: System evaluates weather conditions and calculates motorcycle riding risk levels.
Multi-Station Monitoring: View conditions from multiple weather stations across all Crete regions.
Bilingual Alerts: Weather warnings displayed in both Greek and English.
Live Data Updates: Automatic refresh every 15 minutes with latest conditions.
Public API Access: Uses official APDKriti Meteo data from data.gov.gr - no API key required.
Fallback System: If live data is unavailable, displays realistic demo data to ensure functionality.

🌡️ Weather Parameters Monitored:

Wind Speed & Direction: Critical for motorcycle stability (alerts above 30 km/h)
Temperature Extremes: Heat waves (>35°C) and cold conditions (<5°C)
Precipitation: Heavy rain alerts for traction and visibility risks
Humidity & Pressure: Additional context for weather conditions

🚨 Risk Levels:

Low Risk (Green): Ideal riding conditions
Medium Risk (Yellow): Caution advised - moderate winds or light rain
High Risk (Red): Dangerous conditions - avoid riding

📍 Coverage Areas:

All Crete Regions: Chania, Rethymno, Heraklion, Lasithi
Mountain Areas: Special attention to high-altitude conditions
Coastal Regions: Wind and temperature monitoring

🔧 Alternative Applications

Versatile Sensor Platform: This app's core technology can be adapted for many different uses beyond motorcycle riding. The same sensors and tracking features could serve multiple purposes across various activities.

🏗️ Construction & Carpentry:

Angle Measurements: Use lean angle sensors for roof pitches, stair stringers and framework alignment
Level Monitoring: Check foundation work, shelving installation and structural leveling

🚢 Marine & Boating:

Sail Performance: Optimize sailing angles and monitor boat heel
Weather Routing: Avoid storms and plan safe sailing routes
Docking Assistance: GPS navigation for precise marina maneuvering
Maintenance Tracking: Engine hours, hull cleaning and equipment upkeep

🏔️ Outdoor Adventure:

Hiking & Trekking: Trail mapping with elevation profiles and GPS tracking
Climbing Safety: Angle measurement for rock climbing routes and slope assessment
Backcountry Navigation: GPS with emergency SOS for remote areas
Weather Awareness: Sudden weather change alerts for mountain safety

🏃 Sports & Fitness:

Running/Cycling: GPS tracking with performance analytics and route mapping
Winter Sports: Ski and snowboard angle analysis for technique improvement
Workout Tracking: Session management with progress statistics

🔬 Core Technology Transfer:

Angle Sensors: Any application requiring tilt or inclination measurement
GPS Tracking: Location-based services and position monitoring
Data Logging: Session recording and performance analysis
Alert Systems: Threshold monitoring and safety notifications
Maintenance Tracking: Equipment lifecycle management

🚀 Quick Start Guide

1. Basic Start:
   • Mount phone securely on motorcycle in riding position
   • Tap "Calibrate Sensors" in Navigation tab - keep phone steady for 5 seconds
   • Press Start Ride
   • Stop Ride and Save Session at the end of your ride
2. Initial Setup:
   • Mount phone securely on motorcycle in riding position
   • Tap "Calibrate Sensors" in Navigation tab - keep phone steady for 5 seconds
   • Calibation data are saved. You have to calibrate once and only if you later change phone position
   • For more accurate results, calibrate on each session/li>
   • Add emergency contacts in Emergency tab
   • Set up maintenance items in Upkeep tab
3. Before Riding:
   • Tap "Start Ride & Session" and go to Navigation tab and tap "Lock Position"
   • For engine analysis: Start Engine Analysis and calibrate with "Record Engine Sample"
   • Test emergency features safely before riding
4. During Ride:
   • Monitor Metrics tab for real-time performance data
   • Use Navigation tab to lock parking positions when needed
   • Triple-tap screen for quick enlarged stats overlay
   • Watch header wheel animation match your speed
   • Use Quick Save for important moments during ride
5. After Ride:
   • Tap "Stop Ride & Save" to end recording
   • Save session with name and notes when prompted
   • Check maintenance progress in Upkeep tab
   • Export session data for analysis or backup
   • Review ride statistics in session history

💡 Pro Tips

For Best Results:

• Mount phone securely aligned with bike's centerline for accurate lean angles
• Calibrate engine sound analysis in a quiet environment away from wind noise
• Set realistic maintenance intervals: 5,000-10,000 km for oil, 1,000 km for chain lubrication
• Test all emergency features in a safe environment before relying on them
• Use quick save frequently during long rides to prevent data loss
• Export session data regularly to backup your riding history
• Calibrate crash detection with your specific phone mounting position

Safety Features:

• Crash detection requires proper phone mounting and sensor calibration
• Emergency contacts should be set and tested before any ride
• Test audio navigation in a safe area first to understand the cues
• Keep phone charged - consider a motorcycle phone charger for long rides
• Emergency features start disabled until you explicitly enable them

Performance Tracking:

• Monitor cornering G-forces to improve technique and find limits safely
• Track acceleration times to measure performance improvements
• Use elevation data to plan routes and track climbing performance
• Analyze gear shift patterns to develop smoother riding habits
• Compare session data to track progress over time

🔧 Troubleshooting

Common Issues:

• No GPS signal: Ensure location services are enabled and outdoors
• No engine sound detection: Allow microphone access and start engine analysis first
• Inaccurate lean angles: Recalibrate sensors with phone properly mounted
• Audio not working: Check phone volume, unmute in app, and grant audio permissions
• Crash detection false positives: Recalibrate with phone in exact riding position
• Maintenance items not saving: Ensure storage permissions are granted
• Session data missing: Use Save Session explicitly or enable auto-save

Support:

• Grant all requested permissions (location, microphone, storage) for full functionality
• Use in landscape mode for better dashboard visibility while riding
• Regularly export data to prevent loss from browser cache clearing
• Report any issues for continuous improvement

Created:

• For ihearcolors.online
• By Dimitris Barnias 2025
• If you like this app, please support by buying me a cup of coffee (or two!)
• Any donation is welcome: PayPal newtones@icloud.com
• Report any bugs or suggest new features at: dbarnias@gmail.com