>>311338309
Do you have some electronics that could send button press signals? What is it? Are there premade solutions? 

One of things i want to try to do when i finally get into lighthouse system is exactly that, using one of those crappy esp8266 thingys i have around to send input over network, like trigger press on gun attachment or whatnot, and then translate it into steamvr input for virtual controller that combines puck position+orientation and button input from my thingy. I wonder if steamvr can use multiple controllers for position at once - i've seen those new steamvr contextual bindings and some games seem to try to allow you to bind different position trackers to hands, so i hope it'd work even with existing games. Like Alyx, Alyx seems to allow that, though there are no separate bindings for "hand" and "hand with a gun".

[spoiler]I'm unfortunately cursed with low creativity, so what i'm going to do is literally that, i'll put electronics together, maybe slap a 3d printed gun, and call it a day.[/spoiler]