#The Fifth Lichuang Electronic Design Competition#Smart Home

The project has not been completed. Video 3 only has two functions for shooting. At present, the basic functions have been roughly realized, but the integration has not been completed.

1. Team introduction:

1. Team name: Forward Four

2. Members: (from Shenzhen University)

Su Yongbiao 2019282108

Huang Zehui 2018161033

He Wenlong 2019111058

Tan Wenjie 2019281009

2. Project introduction:

1. Project name: Smart clock

2. Function introduction: The main control of this product is STM32f103zet6, using a 4.3-inch capacitive touch display, with functions such as displaying time and date, indoor and outdoor temperature and humidity, city weather, alarm clock, song playback, todolist small application, etc. It uses a 3.7V lithium battery and is rechargeable. It can be inserted into an SD card and connected to a computer to download songs or store other information.

3. Project details

1. The ultimate goal of the "smart clock" project is a smart home system. As a transitional product (it is not capable of directly reaching the final goal), some aspects of the smart home system are therefore taken into consideration.

2. The intelligent clock master uses STM32F103ZET6, 144pin pins, and has powerful performance;

3. The screen uses a 4.3-inch 480*800 high-definition capacitive touch screen (supports RGB/MCU dual interface NT33510+GT9147 touch IC), supports five-point touch, and has strong performance;

4. The wifi module uses ESP-12F, 2.4GHz spectrum range, and the serial port transmission can be up to 4608000bps. On the smart clock, you can search for surrounding wifi to connect;

5. City weather display, obtain multi-city weather through the Internet, and display it on the LCD screen;

6. The mobile phone host computer obtains the data uploaded by the smart clock from the smart cloud platform, so that it can easily check indoor temperature and humidity, etc., and supports remote viewing. The host computer can set the smart clock alarm function (the alarm clock is described below), and can set the todolist application on the smart clock. If a reminder is set, the alarm will sound when the time comes. There are also some other features;

7. The time display is the time output from the main control chip RTC. In addition, it can also be obtained through the ESP-12F network to check the time and automatic settings;

8. The alarm clock also uses RTC, combined with the voice module XY-V17B and audio amplifier LTK5128D, to sound the default music at the set time or set it by yourself;

9. Support music playback. Enter the music application to adjust the volume, change songs, and set the playback order;

10. Todolist small application, which records some matters, uses GD25Q127 model SPI Flash with a memory of 128M. In addition, the memory also stores sensor acquisition values ​​for some periods of time for review;

11. DHT22 is used to obtain indoor temperature and humidity, which has the advantages of long-term stability, small size, low power consumption, and high accuracy (±0.5 degrees, ±2%RH relative humidity);

12. The screen supports automatic brightness adjustment, using BH1750FVI for light intensity detection, and then automatically adjusts the brightness of the display;

13. The power supply uses 18650 large-capacity battery. The battery has dual protections of PTC (thermal temperature control protection) and explosion-proof valve (explosion-proof protection), which is safe and reliable;

14. Supports charging and discharging, using tp4056 chip, and also designed DW01 and 8205A battery protection. The battery voltage is 3.7-4.2V, which is raised to 5V through the PS7516 boost chip to support the use of some other devices on the board;

15. For power display, there is a 0.005 ohm resistor connected to the power ground. The main control ADC measures the voltage at the other end and calculates the power through an algorithm;

16. 3 buttons can control some things, such as volume adjustment, etc.;

17. The charging interface adopts type-c

4. Challenges faced by the project and problems solved

5. Key points involved in the hardware and software parts of the project

6. Project Material List Most of the components in the BOM list at the end of the article are components that need to be purchased separately.

7. Project pictures

Schematic diagram

PCB

3D

Physical map

< br> < br> 8. The project has not been published and is the first edition.

9. Open source documents

10. References

Punctual Atomic "STM32F1 EMWIN Development Manual_V2.0"

"emWin5_V5.42_Chinese version"

XY-V17B Standard MP3 Mode Application Manual.pdf

XY-V17B UART mode application manual.pdf

BH1750FVI.pdf

GY-30 Chinese instructions.pdf