SSb9O4

Simple voltmeter and ammeter

Overview

1. Project Function Introduction and

Finished Product Images:

2. Project Attributes:

This project is a replica of the open-source project from the training camp.

3. Open Source License:

GPL 3.0

4. Minor Bug:

The last two digits of the digital tube display are always unclear and the light is very dim. I suspected it was due to a cold solder joint, but after resoldering it, the problem persists.

It shouldn't be a code issue, since the downloaded code also has this problem.

My multimeter isn't very reliable either; it can't accurately measure resistance. I'll buy another one when I get back to school.

5. Project Demo:

I used LCSC to draw a simple outer shell and panel.

Design Files

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Update:2026-03-27 03:19:32

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