Construct3 functions for controlling multiple app (game) windows

I've been using Construct3 for making UIs for physical interactive experiences using arduino devices and various sensors. Most of the time, I need two or more windows for multi-display configurations. I've been looking for a way to do this easily for some time now. Right now, I'm using websockets to pass data between two Construct3 apps, but it could be easier if Construct3 had multi-window functions.

I don't think this is gonna get implemented, it's just not a feature that would be used a lot, apart from some gimmicky stuff (in regards to games that is, since Construct is a game engine first and foremost)

However, Construct does let you add javascript. It seems quite benign actually to add the functionality you want with a few lines of code.

developer.mozilla.org/en-US/docs/Web/API/Broadcast_Channel_API

Can I ask how you connect the Arduinos to Construct?

I use websockets to send messages to a node.js server. Then add johnny5 or even a serial library to talk to the arduino from that server. Websocket tutorial here: youtube.com/watch