AEDf8wuwCQ

CW32 Voltage, Current, and Resistance Meter

Overview

1. Project Function Introduction:
This is a voltage and current meter designed based on the LCSC CW32F030C8T6 development board. It can collect and display voltage, current, and resistance data, and a multimeter connection is provided to test the accuracy of the collected data.
2. Problems Encountered:
Because some circuits were self-designed, problems arose during testing, such as: 1. The 12V USB signal could not be triggered (optimized). 2. The lack of grounding in the resistance measurement circuit caused 3.7V interference with other ADC measurements (optimized). 3. There were issues with the LED and buzzer packaging (resolved).
3. Physical Product Images
alt attribute text

4. LCSC Development Board Open Source
: LCSC CW32 Digital Voltage and Current Meter Expansion Board
5. Keil Project
(attached). The code is somewhat rough, and some functions are not yet implemented, such as calibration.

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:2026-03-26 03:01:47

Creative poker clock based on ESP32
A deck of unused playing cards and a 3D printed stand can be used to build a creative playing card clock. I used playing cards as the flaps of the clock and made a fun and crazy clock with minimal par
Bailitong-CDMA SMS modem, Shenzhen SMS modem, eight-port SMS modem pool (400-657-8590)
[url="http://www.fz46.cn" a title="Wholesale SMS Modem"] Bailitong[/url](400-657-8590)CDMA SMS Modem,[url=http://www.fz46.cn]Shenzhen SMS Modem[/url],Eight-port[url=http://www.fz46.cn]SMS Modem Pool[/
[Suggestion] Ideas for implementing a preliminary preview effect on the download center
Please see the effect picture: Two effectsFunction: Add the function of uploading preview pictures on the resource upload page. I think this can reduce the workload of administrators. If you want to p
"Wanli" Raspberry Pi car launched
[i=s]This post was last edited by lb8820265 on 2021-8-15 01:30[/i]I have had a dream of making a car since I was a child. I have been working hard for this dream and have made several generations of B
You must call ros::init() before creating the first NodeHandle
[size=14px]ubuntu 16.04 ros. When running, the error [/size] You must call ros::init() before creating the first NodeHandle Couldn't find an AF_INET address for [] is in the main function. ros::init i
Please help with the specification sheet of this op amp
Does anyone know which manufacturer's op amp the ST4232 is from? I can't find its datasheet online. If anyone has one, please let me know.

Datasheet More

Circuits More