Google Assistant can control any smart devices that are linked in the same home as your Chromecast in the Google Home app. Here are some voice commands you can try: To do this: Press the Assistant button and say: Adjust the lights. “Dim the lights". Change the thermostat temperature. “Set temperature to 72”. Option 1: Open the primary device. Search for the screen you want to cast to. A PIN will appear. Enter it on your Chromecast app. Option 2: Set up the travel router and connect the Chromecast. Bring your router with you, set it up, and connect like you normally would. Option 3: From a Mac, download Connectify, and follow the prompts. CrzGe.