LVGL Analog Clock for T-RGB Round Display
An analog clock application for the LILYGO T-RGB 2.1-inch round display, using LVGL 8 on ESP32-S3 with NTP synchronization, WiFi configuration, and a clean circular watchface layout.
Overview
This project builds a functional analog clock on the LILYGO T-RGB's 480×480 round display using LVGL 8.3.6 and the Arduino GFX library. The round form factor makes it an ideal platform for clock faces — the circular LCD fills the whole bezel with a watchface-style design.
Features
WiFi credentials and timezone are configured in the sketch, and the clock syncs to an NTP server on startup for accurate timekeeping. The LVGL arc and line drawing primitives render hour, minute, and second hands against a circular dial. The capacitive touch layer of the T-RGB's display is also wired in via the OneButton library for user interaction.
Build Details
Built with PlatformIO and managed via GFX Library for Arduino 1.4.2, OneButton 2.5.0, and LVGL 8.3.6. Written in C with minimal C++ glue code. The repository is specifically documented for the LilyGO T-RGB 2.1-inch half-circle display module with full platform configuration instructions included. This is a clean starting point for any round-display clock or watchface project on the T-RGB.
