กลับไปหน้ารวมไฟล์
marine-signalling-light-using-the-morse-symbols-e18ee7-en.md

Marine Communication Redefined: Mobile Morse Signaling

Communication at sea is vital for safety, yet many amateur sailors lack the specialized equipment for long-distance optical signaling. This project bridges the gap by transforming a standard high-power boat searching light into an automated Morse Code signal device, controlled directly from your smartphone or computer.

High-Power Switching: The MOSFET Interface

Standard boat searchlights draw significant current, far beyond what an Arduino's digital pins can handle.

  • N-Channel Power MOSFET: This project uses an N-Channel MOSFET as a high-speed electronic switch. By applying a tiny 5V signal from the Arduino to the Gate, the MOSFET allows large amounts of current to flow from the boat's battery to the 12V searchlight.
  • Precision Pulse Modulation: Unlike a mechanical relay, a MOSFET can switch on and off thousands of times per second with zero wear, allowing for the crisp, rapid pulses required for high-speed Morse transmission.

Cross-Platform Terminal Control

One of the project's most innovative features is its flexible user interface.

  • USB OTG Mobile Integration: By using a USB On-The-Go (OTG) cable, an Android smartphone can act as the main input terminal.
  • Serial Communication Logic: Using the Serial USB Terminal app, the user simply types a text message on their phone. The Arduino receives this string over the USB serial link, parses it character-by-character, and translates it into Morse Code "dots" and "dashes."
  • International Standards: The code implements the International Morse Code timings (e.g., a dash is three times the length of a dot), ensuring the signals are readable by other vessels or emergency responders.

Safety, Training, and Heritage

Beyond its practical use in emergency signaling, this project is a powerful educational tool for Radio Amateurs and maritime enthusiasts. It provides a tangible way to practice the International Code of Signals (ICS) while honoring the long history of optical telegraphy. Whether used for signaling distress or communicating with fellow sailors during a regatta, this project adds a critical layer of safety and capability to any vessel.

I didn't found a signalling light for my sailing boat so I decided to make it by myself. I know International Maritime Organisation's International Code of Signals (ICS) but I haven't had suitable light to practice for emergency situations. I am also radio amateur (OH8JK) and I found that this project may serve also learning the Morse code.

ข้อมูล Frontmatter ดั้งเดิม 

title: "Marine signalling light using the Morse symbols"
description: "How you can upgrade your searching light in your boat as an signaling light too. You can use computer or even mobile phone as a terminal."
author: "jarmokiuru"
category: ""
tags:
  - "transportation"
  - "security"
  - "communication"
views: 834
likes: 1
price: 450
difficulty: "Easy"
components:
  - "1x Power MOSFET N-Channel"
  - "1x Arduino UNO"
  - "1x USB OTG cable for cell phone"
tools: []
apps:
  - "1x Serial USB Terminal by Kai Morich"
downloadableFiles:
  - "https://projects.arduinocontent.cc/71aef09b-e0e7-454b-b423-2b87ed7c026b.ino"
  - "https://projects.arduinocontent.cc/71aef09b-e0e7-454b-b423-2b87ed7c026b.ino"
documentationLinks: []
passwordHash: "a0c0a9777db548e84d6d8a8beb3c297ea01f22fd2d2d14048b9aa6d834bf2b29"
encryptedPayload: "U2FsdGVkX1+fjBmsUZ5FgR0cZfy8sHcKB4EqIN8/H7pcObpA7vWY4xdlPVjiv/TeT7kgJzazg665fhqht+0Z1sxTXIouyC5urJUDlwMZpq+QYtTXIFtBDj14Mxbk8nIC"
seoDescription: "Upgrade your boat searching light into a Marine signalling light using Morse symbols with a computer or mobile phone terminal."
videoLinks: []
heroImage: "https://cdn.jsdelivr.net/gh/bigboxthailand/arduino-assets@main/images/projects/marine-signalling-light-using-the-morse-symbols-e18ee7_cover.jpg"
lang: "en"