#The7thLiChuangElectricityContest#USB voltage and current meter

Note: * is a required field,
please fill it in during the registration stage↓
 
* 1. Project Function Introduction
Follow the training camp to design a USB voltage and current meter
Note: The topic is not limited, it can be a solution to a problem in life/work, a solution designed for a certain group of people/scene, a graduation project/course design/DIY project/purely cool project, etc. Mainly talk about what problem you solved by what means.
 
*2. Project Attributes
Follow the training camp to learn design
Note: Please indicate whether the project is publicly disclosed for the first time; whether the project is original; whether the project has won awards in other competitions, if so, please describe the details of the award; whether the project has participated in the defense at school.
 
* 3. Open Source Agreement
GPL3.0
Note: Altruism is self-interest, please read the following content carefully.
Embrace open source and give unlimited value to the project. It is recommended that more than 80% of the core functions of the project be open source;
if a part of the function is irreplaceable and the project cannot solve the corresponding problem after deleting it, then the function implemented by this part is the core function of the project; for example, if an electronic load is designed and a host computer software is designed to monitor power changes, the electronic load is the core function and the host computer software is an auxiliary function; for example, an isolated 485 module is used in the electronic load to communicate with the host computer, then the communication function implemented by this 485 module is an auxiliary function;
the project should choose an open source protocol that suits it. If the project references other open source projects, the source should be indicated and the original author's open source protocol should be followed; the original project is recommended to use the GPL3.0 open source protocol;
the functions implemented by directly referencing the original circuit or original code of the open source project cannot be used as the core functions of your own project, and the functions directly implemented by using the general modules on the market cannot be used as the core functions of your own project.
 
Please fill in the following in the competition stage↓
 
*4. The hardware part
converts the current into a voltage value through a sampling resistor and a current sensing amplifier chip, collects the actual voltage value through a resistor divider, and transmits it to the corresponding IO port respectively, and then calculates the real-time power. OLED display is realized through single-chip microcomputer control.
 
Note: It is recommended to use Jiali Chuang EDA. If you choose other EDA tools, please upload the schematic diagram in PDF format, the PCB drawing in PDF format, and the PCB file in Gerber format in the attachment. Here you can explain in detail the implementation principle and mechanism of your project, precautions, debugging methods, testing methods, etc. It is recommended to introduce your ideas to others in the form of pictures and texts.
 
*5. The software part
uses the official code. After modifying the actual voltage and the displayed voltage ratio, everything is displayed normally. Use ST-LINK to burn the program
. Note: If your project involves software development, please upload the corresponding engineering source code in the attachment. Here you can explain in detail your software flow chart, functional module block diagram, explanation or popularization of related algorithms, source code structure, compilation environment construction and configuration, source code compilation method, program burning method, etc. It is recommended to introduce your ideas to others in the form of pictures and texts.
 
*6. BOM list
 
ID
Name
Designator
Footprint
Quantity
Manufacturer Part
Manufacturer
Supplier
Supplier Part
Price
1
4.7u
C1
C0805
1
 
 
 
 
 
2
0.1u
C2,C3,C4,C5,C8,C9,C10,C11
C0805
8
 
 
 
 
 
3
22u
C6,C7
C0805
2
 
 
 
 
 
4
1206L350SLTHYR
F1
F1206
1
1206L350SLTHYR
Littelfuse
LCSC
C207042
1.0939
5
HDR-F-2.54_1x4
H1
HDR-F-2.54_1X4
1
 
 
LCSC
C225501
0.5575
6
HDR-M-2.54_1x2
J1
HDR-M-2.54_1X2
1
 
 
LCSC
C124 375
0.1366
7
HDR-M-2.54_1x6
J2
HDR-M-2.54_1X6
1
 
 
LCSC
C190819
0.2414
8 LED
-0805_R LED1
LED0805_RED
1
17-21SURC
/S530-A3/TR8 EVERLIGHT ( Taiwan Everlight )
C72037 0.103
 
9
XC62
20B331MR - G Q1
SOT
- 25-5_L3.0
-W1.8 - P0.95 - LS3.0 - BR
1 R0603 3










 
 
 
 
 





 
 
 
 
 





 
 
 
 
 
13
1k
R6
R0603
1
 
 
 
 
 
14
TS-1101-BW
SW1
KEY-SMD_2P-L6.0-W3.6-P7.4-LS8.0-L
1
TS-1101-BW
XKB Enterprise
LCSC
C500065
0.2555
15
N32G430C8L7
U1
​​LQFP-48_L7 .0-W7.0-P0.50-LS9.0-BL
1
N32G430C8L7
Nations
LCSC
C3032170
5
16
INA199B1DCKR
U2
SC-70-6_L2.2-W1.3-P0.65-LS2.1-BL
1
INA199B1DCKR
TI(Tex as Instruments)
LCSC
C398920
1.984
17
USB-212-BCW
USB1
USB-A-SMD_USB-212-BCW
1
USB-212-BCW
XUNPU
LCSC
C720521
0.4562
18
U-USBAS04P-F000
USB2
USB-A-SMD_USB-302S
1
U-USBAS04P-F000
Shenzhen Cankemeng
LCSC
C386735
0.5705
Note: BOM list involved in the project. Please upload a screenshot of the BOM in this location. Please upload the list details in PDF format to the attachment. It is recommended to include model, brand, name, package, procurement channel, purpose, etc. Specific content and The format should be based on the clear expression of the project composition.
 
*7. For the competition logo verification
, please upload a project image containing the competition logo. The logo is printed on the PCB in the form of silk screen.
Click zip to download the competition logo! （Contest logo）.zip
 
* 8. Demonstrate your project and record it into a video.
 
Video requirements: Please shoot horizontally, with a resolution of no less than 1280×720, in Mp4/Mov format, and a single video size limited to 100M;
Video title: Lichuang Electronics: {project name}-{video module name}; such as Lichuang Electronics: "Autonomous Driving"-Team Introduction.
 
More details: https://diy.szlcsc.com/posts/d76d9cb41705430e9a54e7a5feed07a5