#The7thLiChuangElectricityContest#USB current and voltage meter

Note: * is a required field,
please fill it out during the registration stage↓
 
* 1. Project function introduction
Refer to the USB current and voltage meter in Example 1 of the Jiali Chuang Summer Training Camp. This voltmeter is based on N32G430C8L7 and INA199, and can check the voltage, current and power when the USB is working. 
 
* 2. Project attributes
This project is not original and is only for learning.
 
* 3. Open source agreement
GPL 3.0
 
Please fill it out during the competition stage↓
 
* 4. Hardware
Although I downloaded LiChuang EDA a long time ago, I am still a novice and don’t have much good content to share with you.
1. Large currents require thicker wires
2. Be careful not to use the wrong network labels and identifiers (be careful!!), because the error was so unexpected that I couldn’t find the cause after several days of investigation, and I almost gave up completing the project (as shown in the figure below, the 9-pin VCC uses the network label, and the other power pins use identifiers. This error caused the screen to not light up, which was later solved by flying wires)
3. The power count value fluctuates greatly. I guess it is caused by irregular layout and flying wires. I would like to ask for an answer.
4. This time, I followed the official board drawing intact. I have experienced the whole process of electronic products from design to finished products. I hope that I can have my own ideas and realize them in the next training camp.
 
 
*5. I have only learned 51 for software
before, and I am unfamiliar with 32-bit microcontrollers. I even learned how to burn programs after joining the LiChuang training camp, so the software part still needs to be learned later.
 
 
 
*6. BOM list
 
 
 
*7. Competition LOGO verification
 
 
*8. Demonstrate your project and record it into a video and upload it.
 
 
 
More details: https://diy.szlcsc.com/posts/d76d9cb41705430e9a54e7a5feed07a5