#The7thLiChuangElectricityContest#A USB power meter

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* 1.
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Based on N32G430C8L7+INA199 power supply voltage and current detection, power calculation, 0.91-inch oled display
Note: The theme 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.
 
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Jiali Chuang 2022 Summer Training Camp
 
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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 functions is irreplaceable and the project cannot solve the corresponding problem after deleting it, then the functions implemented by this part are the core functions 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 quotes other open source projects, the source should be indicated and the original author's open source protocol regulations should be followed; original projects are recommended to use the GPL3.0 open source protocol;
functions implemented by directly quoting the original circuit or original code of the open source project cannot be used as the core functions of your own project, and functions directly implemented using general modules on the market cannot be used as the core functions of your own project.
 
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Refer to the official case of the training camp (5V version) to design [Official case of the training camp] USB ammeter - Jiali Chuang EDA open source hardware platform (oshwhub.com) The
main control
N32G430C8L7 microcontroller product adopts a high-performance 32-bit ARM Cortex™-M4F core, integrated floating-point unit (FPU) and digital signal processing (DSP), and supports parallel computing instructions. It should be noted that each power pin of the chip needs to be connected to an additional 100nF external filter capacitor, and the 1st pin of the chip needs to be connected to an additional 4.7uf filter capacitor.
The
current sampling part is the INA199B1DCKR current sensing amplifier (also called current sensing amplifier), which is often used for overcurrent protection, precision current measurement for system optimization, or closed-loop feedback circuits.
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.
 
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Compiler: ARM Compiler version 5 (-O0)
MDK version: 5.36
Debugger: DAPLINK
Note: If your project involves software development, please upload the corresponding project source code in the attachment. Here you can explain in detail your software flow chart, functional module block diagram, explanation or popular science 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. Please enter the content of
 
the BOM list ... Note: The BOM list involved in the project. Please upload a screenshot of the BOM in this position. Please upload the list details in the attachment in PDF format. It is recommended to include model, brand, name, package, procurement channel, purpose, etc. The specific content and form should be based on the clear expression of the project composition. *7. For the competition LOGO verification, please upload a project picture containing the competition logo, and the logo is printed on the PCB in the form of silk screen. Click zip to download the competition logo! (Competition 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 Electric Competition: {Project Name}-{Video Module Name}; For example, Lichuang Electric Competition: "Autonomous Driving"-Team Introduction. More details: https://diy.szlcsc.com/posts/d76d9cb41705430e9a54e7a5feed07a5