Temperature and humidity alarm based on 32-bit core board

I. Project Introduction
    This project utilizes a 32-core board and a baseboard temperature and humidity alarm expansion board. The baseboard consists of a DHT11 temperature and humidity sensor, a 4-digit 0.56-inch common cathode digital tube, a buzzer, one power indicator, two temperature and humidity mode indicator lights, four function buttons, and one reset button.
II. Core Board Compatibility
    The core board of this project supports the GD32 small board from LCSC, the STM32F103 small blue board, and the CW32 small blue board from Wuhan Xinyuan Semiconductor. More core boards are currently being adapted.





LCSC GD32E230 Minimum System Board,
STM32F103C8T6 Core Board,
CW32F030C8T6 Core Board.


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III. Instructions for Use

LED1: Power indicator
LED2: Temperature mode indicator
LED3: Humidity mode indicator
KEY1: Single click: Temperature mode; Double click: Set upper and lower limits for temperature alarm
; KEY2: Single click: Humidity mode; Double click: Set upper and lower limits for humidity alarm;
KEY3: Alarm value +, valid in alarm mode;
KEY4: Alarm value -, valid in alarm mode;
RST: Reset mode.