🔐 Security Systems
- RFID-based access control systems
- Custom authorization for different users and guests
- Auto-activation of security systems when no one is home
- Integration with camera and alarm systems
- Remote control of electric locks and alarms via relay
- Audible and visual warning systems
🏠 Smart Home & Automation
- Motion-activated lighting and devices
- Presence-based automation logic
- Scheduled device operation
- Remote control of fans, lights, curtains, etc.
- Automatic system activation/deactivation based on occupancy
- Buzzer and indicator-based alert systems
🚪 Practical Electronic Systems
- Elevator control panels with floor selection and indicators
- Smart doorbell systems with audio/visual alerts
- Relay-based door unlocking systems
- Indoor notification and control units
- Floor and direction indicators using displays
🕹️ Control & Joystick Systems
- Custom joystick design for PC use
- Upcycling old RC controllers with Arduino
- Potentiometer and switch-based control panels
- Flight simulator-compatible control hardware
- Multi-mode toggle and spring switches for input systems
📱 Mobile App-Controlled Systems
- Mobile apps to control security devices
- Tap-to-unlock door systems
- Remote triggering via smartphone
- Android-based app interface for smart devices
🖥️ Interface & Display Systems
- Custom LCD interfaces showing time, user data, and status
- Real-time entry/exit display
- Personalized UI elements with developer branding
- Visual alerts and status feedback on screen
📊 Tracking & Logging Systems
- Entry/exit activity logging
- Persistent user history storage
- Real-time event tracking without data loss
- User-specific action records
⚙️ Hardware & System Integration
- Arduino-based multi-module systems
- Integration of relay, LCD, buzzer, sensors, and more
- Power and circuit planning for reliable performance
- Logical control structures for automation scenarios