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README
MIT

USB2TTL-CH340G

这是采用CH340G芯片的USB转UART模块的KiCAD工程设计文件,同时可以作为Arduino下载器。

目标功能

  1. 通用的usb转uart功能
  2. 为Arduino下载程序
  3. 自由选择3.3V或5V供电和信号电平模式。
  4. 电源LED指示、TX和RX的LED指示

原理图

sch

PCB

pcb

PCB的3D预览

sch

附:

CH340 是一个 USB 总线的转接芯片,实现 USB 转串口、USB 转 IrDA 红外或者 USB 转打印口,其中设计中采用的CH340G是一款只有USB转串口功能的芯片。

I. 芯片驱动
  1. windows驱动
  2. Mac OSX驱动
  3. Linux驱动
II. 注意

电路完成焊接后,因为稳压二极管的性能误差,可能会造成输出的3.3V不准,电压低于3.2V时可能会造成Mac电脑在使用3.3V的工作模式时UART通信有问题。可以通过更换稳压二极管或者更小阻值的电阻R3来解决。

The MIT License (MIT) Copyright (c) 2016 十里 Permission is hereby granted, free of charge, to any person obtaining a copy of this software and associated documentation files (the "Software"), to deal in the Software without restriction, including without limitation the rights to use, copy, modify, merge, publish, distribute, sublicense, and/or sell copies of the Software, and to permit persons to whom the Software is furnished to do so, subject to the following conditions: The above copyright notice and this permission notice shall be included in all copies or substantial portions of the Software. THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

简介

采用CH340G芯片的USB转UART模块的KiCAD工程设计文件 展开 收起
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