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CH340C serial port module

Overview

This serial port project is based on the CH340C - Lichuang EDA open source hardware platform (oshwhub.com) project. This project is designed with electrostatic protection and overload protection, and provides 5V and 3V jumpers.

On this basis, this project changed the 5V and 3V jumpers to switch control, and the input interface was replaced with a Type-A male plug that can be plugged directly into the computer. The output interface retains the original 2.54mm pin design, and a Type-A female socket is added. The advantage of this module is that various interfaces such as Type-C can be used on the motherboard, and the CH340 circuit is not required. In this project, RX and TX exchange soldering points are reserved (those with ** or ## are soldered to 0 ohms at the same time Or solder directly). (To prevent the motherboard RXTX line design from being reversed)

Design Files

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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:2025-07-15 19:15:14

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