sigma

[Tuya Smart] Intelligent thermometer and hygrometer

Overview

Tuya Smart’s temperature and humidity meter integrates a relay switch

Lichuang EDA and Tuya Smart once again launched Tuya Smart’s second phase of IoT practical camp, this time using the MUC development solution.

The core MUC chooses STC8G2K64S4 , the communication module uses Tuya's WB3S, the temperature and humidity sensor chooses SHT30 chip, the display uses a 0.96-inch OLED display, a relay switch output circuit is added, an integrated serial port programming circuit, and 5 indicator lights. 4 buttons, the power conversion part uses the AMS1117 power conversion chip.

1. The distribution network mode can be switched by pressing the button, and the relay switch can be controlled by pressing the button;

2. The display screen can display the distribution network mode, and the LED indication can display the distribution network mode, relay indication, and module networking indication;

3. The mobile APP can display temperature and humidity, and can control the remote relay switch;

4. Onboard STC microcontroller download circuit, press the button to restart the microcontroller download program.

There are DS18B20 temperature sensor and AM2301 temperature and humidity sensor interface left on it. On this basis, the temperature can be set through the display screen to create an automatic temperature and humidity control system.

It was a big challenge for me, who has weak programming skills. Thanks to classmate Zhao Jialu for his help, I rewrote the MUC code part from his shared code.

Design Files

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Update:2025-06-19 01:41:20

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