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#smartwatch
2 posts
electronic
Jun 26, 2026
LightInk Is A Solar-Powered Smartwatch That (Almost) Never Needs Charging
Daniel Ansorregui's ESP32 smartwatch pairs a built-in solar panel with e-paper and a clever RTC-memory boot trick to stretch run time to months.
electronic
Jun 26, 2026
OpenWear C3 Is a Smartwatch Platform Built From Bare PCB Up
Hansel Kay designed an ESP32-C3 smartwatch from scratch — PCB, power regulation, and firmware — as a platform other makers can build on.