KVM-over-USB | Simple KVM solution

**This version has been abandoned and is only archived**

## Introduction
to implement a simple KVM (Keyboard Video Mouse) function to realize screen monitoring (HDMI) and keyboard and mouse control (USB) of the client through the host computer program
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![image.png] >Pictures from the Internet

## Simple hardware analysis

![image.png] - Two CH549s implement data transmission and USB keyboard and mouse functions (the technology is too novice to handle dual USB STM32, so chose this option).
- MS2109 implements the video capture card function and displays the controlled screen on the host computer.
- SL2.1A connects the capture card, USB serial port, and CH549 USB together.
- CH340G USB to serial port does not need to be installed and is used for software debugging. ## Simple KVM client with

control software ! [Snipper - Snipaste_2022-11-07_12-04-12.png] ![image.png] - Implement screen display (supports output switching resolution) - Client keyboard control, automatic Define shortcut keys - client mouse capture and control. After capturing the mouse, press the right CTRL key of the keyboard to release. The operation logic is similar to VirtualBox ( ## Firmware flashing ### CH549 holds down the Flash key and inserts USB to flash the firmware Use [WCHISPTool](https://www.wch.cn/downloads/WCHISPTool_Setup_exe.html) to flash the firmware. Both CH549s need to flash the firmware. The firmware will automatically identify the master and slave ! [1.jpg] ### Supported by MS2109 AT24C16 EEPROM can be purchased directly, or programmed with an EEPROM programmer. You can use the programming clip to program when the board is powered off ## Project address https://github.com/Jackadminx/KVM-Card ## Thanks. https://oshwhub.com/gloomyghost/yuzuki-hcc