#The 8th LiChuang Electronic Competition#Voice Clock

This project was designed and created using the professional version of Jiali Chuang EDA. We would like to thank the organizer, Li Chuang Shopping Mall, for their support and Renesas for their sponsorship.
1. Introduction to project functions:
This is a desktop electronic clock design based on the R7FA2E1A72DFL chip. It uses a four-digit 0.56-inch common cathode digital tube to display time, temperature, etc. It uses a DHT11 temperature and humidity sensor to collect ambient temperature and humidity. The reset button, serial port circuit, and SWD download circuit are all led out for easy download and debugging. 2. Project attributes:
1. The onboard appearance is small, with a size of only 70mm*35mm (2755.906mil*1377.953mil);
2. Complete download and debugging interfaces;
3. Using a power switching circuit, it can continue to work even if the power is off through a lithium battery;
4. Cheap price and complete functions;
5. Using Jiali Chuang's high-quality PCB and genuine components to ensure product quality;
 
3. Open source protocol
 Public Domain
 
4. Hardware part
1. Main control chip: R7FA2E1A72DFL;
2. Power interface: TYPE-C, 2Pin plug-in;
3. LED: one power indicator light, one charging status indicator light;
4. Buttons: one reset button, one BOOT button, and four function buttons;
5. Debug interface: SWD download debug interface, serial port download debug interface, both use 2.54 pin header interface for lead-out;
6. Peripherals: one 0.56-inch common cathode digital tube, one DHT11 temperature and humidity sensor, and one passive buzzer;
 
5. For the software part,
use the USB to TTL serial port burning tool to download the program to the microcontroller. The RXD end of the USB to TTL line is connected to the TXD end of the microcontroller, and the TXD end is connected to the RXD end of the microcontroller;
 
6. BOM list
 
7. Competition LOGO verification
8. Demonstrate your project and record it as a video and upload it to
the Bi Station link https://b23.tv/wAgKGVy