Timer

Sailing Start Timer

This project is a microcontroller-based horn system designed to automate race starts for sailboat regattas. It replaces manual countdowns and whistle systems with a reliable, consistent, and rugged solution tailored to race officials on the water.

Summary

The Sailing Start Timer outputs a sequence of horn blasts that follow standard sailing race countdown rules. A single button press initiates the sequence, allowing race officials to focus on managing boats instead of watching the clock. The system is built with an Arduino and a waterproof speaker, and was designed to be both portable and weather-resistant.

Features

• Automated horn sequence for 5-minute, 3-minute, or custom countdowns
• One-button operation for simple race start triggering
• Loud, waterproof horn for outdoor use
• Rugged and portable design suitable for mark boats or committee boats
• Custom enclosure and PCB designed for durability

Hardware

• Arduino microcontroller
• Waterproof speaker module
• Push-button input
• Custom 3D-printed or machined enclosure
• Power system for extended outdoor operation (e.g. 12V or battery pack)

Software

• Written in Arduino C++
• Timer-based logic to produce horn blasts at key intervals
• Debounced user input handling
• Configurable countdown intervals via code or DIP switches (if implemented)

How It Works

1. User presses a button to trigger the countdown.
2. The microcontroller runs a timed sequence of horn blasts:
   • Long horn at 5:00
   • Warning signals at 4:00, 1:00, and 0:00 (based on racing rules)
3. Horn blasts are output through a waterproof horn module at full volume.
4. System resets automatically or after user input.

Use Case

This device is intended for use by sailing race officials on the water. It simplifies race starts, ensures consistent timing, and reduces errors from manual systems.

Author

Brian Zagalsky