I am looking to build a DM screen (for TTRPG's) with an old laptop screen built in. I understand I will need a controller board to connect my laptop to the screen, but there doesn't seem to be a lot of information about what else I could connect to said board, or what the options are. For instance, can I take the speakers and sub from the old laptop and connect them to the controller as well? Or connect some LED lights maybe? I plan on connecting with an hdmi cable. I've built a couple PC's, but I'm otherwise brand new to this kind of project so any input is appreciated.