LedDisplayFonts Library

A lightweight and easy-to-use Arduino library for displaying numbers and special characters (like :) on LED matrices using the DMD library. Perfect for creating countdown timers, clocks, or any project that requires numeric displays.

Features

• 🎯 Supports numbers 0-9 and the colon (:) character
• 🛠️ Easy-to-use drawChar function for displaying characters
• 🔌 Compatible with LED matrices controlled by the DMD library
• 📦 Example included: A count-up timer demo from 00:00 to 59:59

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Installation

Arduino IDE

1. Download the latest release from the Releases page.
2. Extract the ZIP file into your Arduino libraries folder.
3. Restart the Arduino IDE.

Arduino CLI

arduino-cli lib install LedDisplayFonts

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Usage

Basic Example

#include <LedDisplayFonts.h>
#include <DMD.h>

DMD led_module(1, 1); // Initialize DMD with 1 row and 1 column
LedDisplayFonts displayFonts(led_module);

void setup() {
  // Initialize your display here
}

void loop() {
  displayFonts.drawChar(0, 0, '5'); // Display the number 5 at (0, 0)
}

Example: Count-Up Timer

Find the CountUpDemo sketch in:

File > Examples > LedDisplayFonts > CountUpDemo

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Dependencies

• DMD – LED matrix control
• SPI – Communication protocol
• TimerOne – Timing/scanning
• LedP10 – Brightness control

Install via Arduino Library Manager or manually.

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License

Licensed under the MIT License. See LICENSE for details.

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Contributing

1. Open an issue for bugs/features
2. Fork the repo → create a feature branch → submit a PR

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Credits

• Developer: JakubSdf
• Inspiration: DMD Library

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Support

Like this project? Give it a ⭐ on GitHub or: