Weathergotchi: An Open-Source Climate Tamagotchi with E-Paper Display

Weathergotchi – an open-source climate Tamagotchi

I built Weathergotchi, an open-source, battery-powered climate logger featuring an always-on e-paper display. Powered by an ESP32-S3, this device tracks temperature and humidity for over a week on a small Li-Po battery. It stores data locally and visualizes history on the screen, offering a complete DIY project with custom PCBs and 3D-printed enclosures.

"In my testing, when the battery is near depleted, it can enter an unrecoverable state in which it cannot be powered back on."