How to send keystrokes from one computer to another by USB?

Is there a way to use one computer to send keystrokes to another by usb ?

What i'm looking to do is to capture the usb signal used by a keyboard (with USBTrace for example) and use it with PC-1 to send it to PC-2. So that PC-2 reconize it as a regular k开发者_JAVA百科eyboard input.

Some leads to do this would be very appreciated.

What you essentially need is a USB port on PC-1 that will act as a USB device for PC-2.

That is not possible for the vast majority of PC systems because USB is an asymmetric bus, with a host/device (or master/slave, if you wish) architecture. USB controllers (and their ports) on most PCs can only work in host mode and cannot simulate a device.

That is the reason that you cannot network computers through USB without a special cable with specialised electronics.

The only exception is if you somehow have a PC that supports the USB On-The-Go standard that allows for a USB port to act in both host and device mode. USB-OTG devices do exist, but they are usually embedded devices (smartphones etc). I don't know if there is a way to add a USB-OTG port to a commodity PC.

EDIT:

If you do not need a keyboard before the OS on PC-2 boots, you might be able to use a pair of USB Bluetooth dongles - one on each PC. You'd have to use specialised software on PC-1, but it is definitely possible - I've already seen a possible implementation on Linux, and I am reasonably certain that there must be one for Windows. You will also need Bluetooth HID drivers on PC-2, if they are not already installed.

On a different note, have you considered a purely software/network solution such as TightVNC?

There is a solution:

https://github.com/Flowm/etherkey

This uses a network connection from your computer to the raspi which is connected to a teensy (usb developer board) to send the key strokes.

This solution is not an out-of-the-box product. The required skill is similar to programming some other devices like arduino. But it's a complete and working setup.

The cheapest options are commercial microcontrollers (eg arduino platform, pic, etc) or ready built usb keyboard controllers (eg i-pac, arcade controllers,etc)

SEARCH THIS PROGRAM:

TWedge: Keyboard Wedge Software (RS232, Serial, TCP, Bluetooth)

then, MAKE YOUR OWN CONNECTION CABLE WITH:

(usb <-> rs232) + (NULL MODEM) + (rs232 <-> usb)

Connect 2 computer, write your own program to send signal to your (usb <-> rs232) unit, then you can control another computer under the help of TWedge.

The above mentionned https://github.com/Flowm/etherkey is one way. The keyboard is emulated from an rPi, but the principle can be used from PC to PC (or Mac to Whatever). The core answer to your question is to use an OTG-capable chip, and then you control this chip via a USB-serial adapter.

https://euer.krebsco.de/a-software-kvm-switch.html uses a very similar method, using an Arduino instead of the Teensy.

The generic answer is: you need an OTG capable, or slave capable device: Arduino, Teensy, Pi 0 (either from Rapberry or Orange brands, both work; only the ZERO models are OTG capable), or, an rPi-A with heavy customisation (since it does not include USB hub, it can theoretically be converted into a slave; never found any public tutorial to do it), or any smartphone (Samsung, Nokia, HTC, Oukitel ... most smartphones are OTG capable). If you go for a Pi or a phone, then, you want to dig around USB Gadget. Cheaper solutions (Arduino/Teensy) need custom firmware.