Voice controlled assistants have quickly become commonplace. Many homes have an Alexa or Google Home controlling everything from lighting to media, and even timekeeping. The technology these devices run on is available—at least in part—to everyone. Google’s Assistant SDK allows you to use the service on your own devices. This tutorial covers how to set up the Google Assistant on your Raspberry Pi, and voice activate an LED via GPIO pins. Hardware Required for a Raspberry Pi Home Assistant You Will Need: Raspberry Pi with a fresh Raspbian install on the SD card. USB webcam or microphone. External speaker. Circuit from the Pi LED tutorial (optional) A browser signed into your Google account. Note: The equipment for this tutorial can vary somewhat.