ZY6IRSlN

#The 7th Lichuang Electric Competition# Exquisite and useful USB ammeter

Overview

Note: * is a required field,
please fill it out during the registration stage↓

* 1. Project function introduction:
A USB ammeter made based on the National Technology N32G430C8L7 chip + INA199, with an accuracy of 1%. It can check the voltage, current and power when the USB is working.

*2. The project attributes
are made public for the first time and are open source.

*3. The open source agreement
cannot be used commercially without my permission.

*4. Hardware part: Main
control part :
Note: According to the official schematic, pin 1 needs to be connected to an external 4.7uf capacitor. Use software IIC
sampling circuit. The current sampling
chip is INA199A1 26V, bidirectional, zero drift, low side/high side, voltage output shunt monitor (accuracy is OK)

*5. Software part:

Keil development: Note that the pin source code of IIC is in the attachment

*6.
Please enter the content of the BOM list...

*7. Competition LOGO verification

*8. Demonstrate your project and record it as a video and upload it

Design Files

All reference designs on this site are sourced from major semiconductor manufacturers or collected online for learning and research. The copyright belongs to the semiconductor manufacturer or the original author. If you believe that the reference design of this site infringes upon your relevant rights and interests, please send us a rights notice. As a neutral platform service provider, we will take measures to delete the relevant content in accordance with relevant laws after receiving the relevant notice from the rights holder. Please send relevant notifications to email: bbs_service@eeworld.com.cn.

It is your responsibility to test the circuit yourself and determine its suitability for you. EEWorld will not be liable for direct, indirect, special, incidental, consequential or punitive damages arising from any cause or anything connected to any reference design used.

Hot

Technical Resources More

Search Datasheet?

Supported by EEWorld Datasheet

Technical Videos More

Forum More

Update:2025-05-16 17:09:22

Intercom Shielding Box Technical Data
Product Introduction JC-P503 is a manual shielding box, which can be opened and closed in one action.After opening the cover, the upper cover of the box is supported by two hydraulic support rods, whi
dsp28335 Ecap Summary
1. The pulse capture module is used to capture the rising and falling edges of the pulse quantity, and then the pulse width and duty cycle are calculated. 2.6 groups of ecap modules can also be used a
Smart gloves based on ST AMG SensorTile
Attached source code link: [url=https://github.com/0rig1n/ST-AMG-Sensortile-Development.git]https://github.com/0rig1n/ST-AMG-Sensortile-Development.git[/url][media=x,500,375]https://training.eeworld.c
Application of PLL clock in FPGA
Which of the CYCLONE II FPGA's PLL _outN and PLL_OUTP can be used as the output clock for direct use by external devices? My understanding is that the FPGA outputs a differential PLL clock, not a usab
Preliminary analysis of the G problem of the electronic competition
For reference only I am moving house recently and all the instruments and equipment have been packed, so there is no actual testing and debugging. This plan is for reference only. I made this transcei
Does JLINK support STM8 simulation download?
Does stvd support JLINK emulation? If so, how should it be set up?

Datasheet More

Circuits More