Weathergotchi – an open-source climate Tamagotchi

Weathergotchi - an E-Paper Climate Logger

About

This project is an open-source, battery-powered temperature and humidity data logger with an always-on e-paper display. It records ambient conditions over time, stores readings in non-volatile memory, and displays current data along with a history graph. The device is designed for low power consumption, over 1 week of operation on a small Li‑Po battery.

Key features:

ESP32-S3 with deep sleep & RTC timer to wake up

Temperature and humidity sensor with external EEPROM for logging

Accurate battery monitoring and charging management

Power button controller to turn on/off

1.54‑inch e‑paper display

Custom PCB & 3D‑printed case

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