I found these the other day, so I thought I’d just add them out of interest…
First, the remote control for the telescope room LEDs. I keep meaning to 3d print a little holder for this to fix to the wall, or perhaps even the inside of the door.
And second, the HDMI switcher. This also has a remote, though it uses a battery size (button cell) that I wasn’t familiar with. It seems to work well enough though.
It has four HDMI ports, plus a USB port to go with each. Plugging a keyboard and mouse into a 2-port hub that goes into that USB port means I effectively have a KVM for each of the pier-top machines.