张小哥

Data line detection board

 
Overview

## Last time I copied a data line tester, but it required an external power supply, which was quite troublesome. Then I copied the circuit again and added a shielding layer for testing.

## A CR2032 can be used on a computer motherboard for several years. The battery is CR2032. It consumes no power without plugging in any wires.


![IMG_20230320_234114.jpg]
参考设计图片
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