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Hi, this is Cellie from the Netherlands.

My passion is coding—mainly ESP32 using Arduino/PlatformIO—and making complex things simple to use.

Below you can find some of the ESP32 libraries I’ve created to make life easier.
All open-source code I publish is MIT licensed.

If you like what I do, you can support me with a one-time donation.
Any amount is appreciated, but there’s absolutely no obligation.

All donations go toward hardware purchases for future development.

Featured work

  1. CelliesProjects/moonPhase-esp32

    ESP32 library to calculate the moon phase angle and illuminated fraction for a given time. Version 2.0 introduces API cleanup, stricter compilation, and improved accuracy.

    C++ 32
  2. CelliesProjects/wm8978-esp32

    Arduino IDE library for wm8978 dac on ESP32.

    C++ 24
  3. CelliesProjects/ESP32_VS1053_Stream

    A streaming library for Arduino esp32 with a vs1053 mp3/aac/ogg/flac decoder. Plays http, https and chunked streams. Stream metadata is parsed. Also plays ogg, mp3 and flac from sdcard.

    C++ 110
  4. CelliesProjects/OpenStreetMap-esp32

    This PlatformIO library provides a OpenStreetMap (OSM) map fetching and caching system for ESP32-based devices.

    C++ 17
  5. CelliesProjects/LGFX-ScreenShot

    This library allows you to take screenshots of a 16-bit RGB565 `LGFX_Sprite` or `LGFX_Device` display and save these as 24-bit BMP files on an SD card

    C++ 1
  6. CelliesProjects/flocking-esp32

    A real-time boids / flocking simulation running on an ESP32-S3 with a touch UI, rendered using LovyanGFX.

    C

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