Guy does demoscene tricks to ESP32 powered display (2022)

The article discusses a personal project involving the ESP32 microcontroller, which started as a simple message board for leaving notes. The author initially aimed to use an SSD1306 display and WiFi for remote message updates but later optimized the system by storing messages in EEPROM and implementing a web server for easier updates. As the project evolved, the author explored more complex features, including animations and sound, leading to the integration of a demoscene tracker and a desktop simulator for faster iteration. The project also involved upgrading to a color display and utilizing various coding techniques, such as RLE compression and delta encoding, to optimize memory usage. The author reflects on the challenges faced, including the learning curve associated with CAD for creating a laser-cut front panel. Ultimately, the project exemplifies the concept of scope creep, where the initial goal expanded into a multifaceted learning experience, resulting in a functional and aesthetically pleasing product.

- The project began as a simple message board using an ESP32 and evolved into a complex system with animations and sound.

- The author utilized various coding techniques, including RLE compression and delta encoding, to optimize memory usage.

- A desktop simulator was created to facilitate faster iteration and debugging during development.

- The project highlights the concept of scope creep, leading to a broader learning experience and a successful final product.

- The author learned valuable skills in areas such as I2C vs SPI communication, capacitive button debouncing, and palette cycling.