#9th LCSC Electronics Design Contest# Wireless Temperature and Humidity Detector - 414381A

* 1. Project Function Introduction:

A wireless temperature and humidity sensor that can detect the current ambient temperature and humidity data in real time and broadcast it via Bluetooth. Users can then search for nearby Bluetooth devices to view the data using their mobile phones. Supports Android and Apple phones, but not computers.
 
* 2. Project Attributes:

Version 1: Uses CH571R main controller, easy to solder, but with higher power consumption (60% higher than Version 2).
Version 2: Uses CH582F main controller, adds external DC-DC circuitry, reduces power consumption, and improves Bluetooth performance.
 
* 3. Open Source License:

This project is based on the GPL 3.0 open source license. Any product using the GPL license in a project must also use the GPL license, meaning it must be open source and free. The two most significant characteristics of the GPL are what is known online as "viral spread" and "disallowing closed-source commercial release."
 
* 4. Hardware

: Main Microcontroller: CH571R/CH582F
; Sensor: SHT40;
PCB Prototype: 1.2mm thick
 
* 5. Software:

The project is as follows, mainly consisting of two parts.
* Mount River Studio: You can open the attached project and modify it yourself.
*WCHISPTOOL software: Used for firmware flashing. The firmware is located in the obj directory.
 
*6. The BOM (Bill of

Materials) list is completely correct; you can follow the list.
 
*7. Competition logo verification.

 
*8. Demo your project and record a video for uploading.