Variometer – Vertical speed indicator for paragliders

Designed and engineered from scratch by me during my first year of Computer Engineering, NAVIO is a lightweight, full-featured variometer tailored for aerial applications such as paragliding, RC aircraft, and drones. This project demonstrates my integrated skillset in embedded systems development, electronics design, and wireless communication — all implemented on custom hardware.

I build and sold a product called variometer to detect vertical speed using the build in barometer. It helps paraglider pilots easily detect thermal activit y and make correct inputs to the glider. The device utilizes an ESP32 microcontroller with flight logging, WiFi, and Bluetooth capabilities, allowing it to connect to a mobile phone for increased ease of use. It features a speaker, a sun-readable screen, a sensitive barometer, and other necessar y components. I designed the entire system myself, including the custom P CB, embedded soft ware, and enclosure. This project taught me how to build a MVP from scratch, iterate through ever y design process until it is good enough, test the device, present it to potential customers, and make it market-ready.

🔧 Key Highlights:

• Microcontroller: ESP32 dual-core MCU enabling concurrent data processing and wireless transmission
• Sensor: BMP280 barometric sensor used for high-resolution altitude and vertical speed measurements
• Display: Real-time telemetry visualization via onboard LCD
• Connectivity:
  • Bluetooth: Live transmission to a custom mobile application
  • Wi-Fi OTA: Wireless firmware update support for seamless iteration and maintenance
• Custom PCB: Designed, routed, and manufactured independently — showcasing my proficiency in electronic circuit design and hardware integration

💡 Why NAVIO Matters:

This project is more than just a variometer — it’s a demonstration of end-to-end system design, from sensor communication and firmware development to wireless protocols and hardware manufacturing. As a first-year student, I developed NAVIO not only to solve a real-world problem but to push the boundaries of what a student-level engineer can achieve independently.

🛠 Skills Demonstrated:

• Embedded C++ development on ESP32 platform
• I²C communication and real-time sensor data handling
• PCB design and prototyping using [e.g., KiCad / Altium Designer]
• Implementation of OTA update systems over Wi-Fi
• Bluetooth Low Energy (BLE) data transmission
• UX-focused display integration (LCD screen layout and refresh optimization)

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