lvgl

LVGL is a free, full-featured embedded UI library for devices from small MCUs to 3D-capable MPUs, enhanced by LVGL Pro, a professional editor and tooling.

A GPS bicycle speedometer that supports offline maps and track recording

ZSWatch - the Open Source Zephyr™ based Smartwatch, including both HW and FW.

*That Project's project repository

A powerful Smart Watch based on STM32, FreeRTOS, LVGL.