Ultra-lightweight smart KVM system written in vanilla Javascript with raw DOM API. Intended for running directly on a Raspberry Pi zero.
Consider this: let's assume you have a KVM switch that can be actuated with a keyboard hotkey inputted into a specific USB port. That's cool and all, but what if you want to actuate it over a network instead for some ill-advised reason? This app, running on a Raspberry Pi Zero, emulates a USB HID device using the Linux USB Gadget system, and presents a JSON API and Web frontend for managing and sending hotkeys. Deploy the software to your Pi, and plug the Pi into your KVM switch's keyboard port using the Pi's USB OTG port. Using the Web interface, you can define a set of arbitrary keystrokes, which can then be triggered by pressing their corresponding buttons. Crazy! And also very, very insecure. I trust that you know what you're doing if you're still reading this, and that you don't intend to expose this to the internet or anything reckless like that.
Absolutely, categorically not intended for anything outside extremely low-stakes environments. This is a toy/prototype I threw together in a few hours to solve a very specific technical problem in my home lab. There is no input validation or sanitization of any kind. Do not use this in production!
$ ./setup.sh
Setup script assumes the app is located at /home/pi/actuator. If not, please adjust the path in setup.sh.
$ node .
Then open http://localhost:8005
No, don't bother.