Matthew Holder has just created a python program for a RaspberryPi that allows you to control A/V devices like an Extron Crosspoint and even a Sony BVM!!!: https://www.sleepingcats.org/piavswictrl
This software utilizes the SmartPi Touch, for a full touchscreen control interface! You’ll need to make custom USB-to-RS485 adapters and setup seems a bit complicated, but if you have a stationary setup, this might be the ultimate control solution!
SmartiPi Touch 1 - Case for The Official Raspberry Pi 7" Touchscreen Display - Adjustable Angle
(as of March 30, 2023 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)Raspberry Pi 7" Touch Screen Display
This 7" Touchscreen display for the Raspberry Pi is perfect for creating portable and embedded projects where a keyboard and Mouse would be in the way. The full color display outputs up to 800 x 480 and features a capacitive touch sensing capable of ... read more
(as of March 30, 2023 - More infoProduct prices and availability are accurate as of the date/time indicated and are subject to change. Any price and availability information displayed on [relevant Amazon Site(s), as applicable] at the time of purchase will apply to the purchase of this product.)
Here’s the direct GitHub: https://github.com/6XGate/PiAvSwitchController/wiki
Discussion Forum Topic: https://shmups.system11.org/viewtopic.php?f=6&t=64127