Lightweight Devanagari text rendering engine for Arduino SSD1306 OLED displays.

Devatext provides native UTF-8 rendering of Hindi/Sanskrit text using PROGMEM glyph storage and a minimal bare-metal display pipeline — designed for small AVR boards with limited memory.

• UTF-8 Devanagari rendering
• Supports Hindi & Sanskrit glyphs
• Matra handling
• Optimized PROGMEM bitmap storage
• No external graphics libraries required
• Lightweight for ATmega328-class boards
• Direct SSD1306 control path

After acceptance into Library Manager:

1. Open Arduino IDE
2. Go to Sketch → Include Library → Manage Libraries
3. Search:

Devatext

4. Install

git clone https://github.com/Aryan-git-byte/Devatext

Move into:

Documents/Arduino/libraries/

Restart Arduino IDE.

#include <Devatext.h>

Devanagari display(devanagariDefaultGlyphs, DEVANAGARI_GLYPH_COUNT);

void setup() {
  display.begin();
  display.print("नमस्ते");
}

void loop() {}

See full example:

examples/HelloDevanagari

Devatext converts UTF-8 Devanagari input into glyph indices and renders them from PROGMEM bitmaps directly onto SSD1306 buffers.

Pipeline:

1. UTF-8 decode
2. Glyph lookup
3. Matra positioning
4. Bitmap fetch from flash
5. Pixel write to display buffer

This avoids heavy graphics stacks and keeps RAM usage minimal.

• Arduino Uno
• Arduino Nano

• SSD1306 OLED (I2C)

• AVR

Devatext/
 ├── src/
 ├── examples/
 ├── library.properties
 ├── LICENSE
 └── README.md

• Designed primarily for AVR boards
• SSD1306 focused rendering path
• Glyph set currently limited to bundled tables

• ESP32 / ARM support
• Larger glyph coverage
• Faster glyph lookup structures
• Layout shaping improvements
• Additional display drivers

Contributions welcome — especially:

• Glyph expansions
• Performance optimizations
• Cross-architecture support
• Rendering improvements

Open an issue or submit a PR.

MIT License — see LICENSE file.

Aryan Kumar Embedded systems learner and builder focused on practical electronics and display systems.

GitHub https://github.com/Aryan-git-byte

Most Arduino display stacks focus on Latin rendering. Devatext explores native Indic rendering on resource-constrained microcontrollers — bringing regional language display capability to embedded systems.

Devatext is a lightweight, hardware-focused Devanagari rendering engine designed for small Arduino boards. It prioritizes memory efficiency, direct control, and simplicity while enabling meaningful native language display in embedded projects.