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Voltmeter and Ammeter

Overview

* 1. Project Function Introduction:

A real-time voltage and current meter powered by Type-C, featuring a passive buzzer and driver circuit, a 0.96-inch OLED screen, enhanced voltage and overcurrent resistance, and the ability to measure up to 48V and 6A.

* 2. Project Attributes:

A beginner's attempt at development, created for learning purposes. The circuit is simple and easy to replicate.

* 3. Open Source Protocol

: Simple structure, freely usable.
* 4. Hardware: The main

control circuit uses the LCSC CW32F030C8T6 minimum system board, featuring a 0.96-inch monochrome I2C screen, a passive buzzer and its driver circuit, control buttons, dual-range voltage sampling circuit, current sampling circuit, voltage analog circuit, current analog circuit, and a serial port download interface.

* 5. Software:

Initial use of CW32 series chips; software is still under development.

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.

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Update:2026-03-27 22:22:03

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