s739sI

A temperature and humidity meter based on ESP32C3FH4 is connected to a weather network.

Overview

Most of it is copied from other people's projects, such as JLCPCB's official ESP32 design, with modifications

mainly to remove the high-cost touchscreen (that one was outrageously expensive) and replace it with two buttons, a 2-inch display costing 10 yuan,

and a 3D-printed shell. The design took a long time,

mainly because the software code is open source and can be easily modified. Based on IDF5.2 + LVGL8, the design is very beautiful. The downside is that it's

not commercially viable

:

I don't know if it's a problem with the circuit design or something else, but the 450mAh battery only lasts for about 4 hours. I hope someone interested
can investigate this and issue an issue and pull request on GitHub.

Code address:
https://github.com/tungyao/idf_esp32_lcd_and_i2c.git

Design Files

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Update:2026-03-28 08:37:53

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