AVR microcontrollers are a popular choice for embedded systems. They are cheap, easy to use, and have a large community of users. This page will help you get started with AVR microcontrollers.
Most AVR microcontrollers have a built-in USB-to-serial converter. This means that you can use them to control your home automation system. You can use them to control lights, fans, and other devices. You can also use them to control your home automation system using MQTT.