Build a Smart Light with Azure IoT Hub

In this post, we will build a voice control smart light with Azure IoT hub. All hardwares we need are shown in the picture below, a Raspberry Pi, 3 LEDs, 3 220Ω resistances, a breadboard, some DuPont lines, and Amazon Echo Dot. Don't worry if you do not have one of them or even any of them, we still can make things work with simulated device, and I will explain how to do that and the end of this post. Before we begin this awesome job, let's make it clear how does the entire flow of the information go from your voice to the light turn off or on status. Firstly, Amazon Echo Dot records your voice and send it to Amazon Cloud, and Amazon Cloud transforms your voice to command.