Arduino Character Generator

Create custom 8x8 characters for Arduino LCD displays with visual editor and instant code generation.

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About This Tool

This Arduino Character Generator allows you to design custom 8x8 pixel characters for LCD displays commonly used with Arduino projects. The tool provides an intuitive grid-based editor where you can click pixels to create your design, preview it in real-time, and generate ready-to-use C/C++ code with proper byte array formatting. Perfect for creating custom icons, symbols, or graphics for your Arduino LCD projects without manual binary calculations.

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How to Use

Click pixels in the 8x8 grid to design your character (black = pixel on, white = pixel off)
Use the 'Clear Grid' button to reset your design
Preview your character in the display area
Click 'Generate Arduino Code' to create the C/C++ byte array
Copy the generated code directly into your Arduino sketch
Use the character array with the lcd.createChar() function in your project

Frequently Asked Questions

Find Quick Answers

What LCD displays does this work with?

This generator creates character arrays compatible with standard HD44780-based LCD displays (16x2, 20x4, etc.) commonly used with Arduino. The 8x8 pixel format is the standard for custom characters in these displays.

How do I use the generated code in my Arduino project?

Copy the generated byte array into your Arduino sketch. Use lcd.createChar(num, array) to assign it to a character slot (0-7), then display it with lcd.write(num). The tool provides complete example code showing the entire process.

Can I save or export my designs?

The tool works entirely in your browser - you can copy the generated code to save it. For persistent storage, save the code in your Arduino sketch files or note the binary values for future recreation.

What's the maximum number of custom characters I can create?

Most Arduino LCD libraries support up to 8 custom characters (numbered 0-7). You can generate multiple characters with this tool and use them together in your project.

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