Explore DIY home automation using microcontrollers and CircuitPython in this 29-minute conference talk from EuroPython 2021. Gain an introduction to key microcontroller concepts and learn to program using an emulator without physical hardware. Discover how to create low-cost projects like a robot floor cleaner and a plant watering system. Follow along as the speaker demonstrates real-world applications, from basic "Hello World" examples to more complex temperature sensing and automated cleaning robots. Get hands-on experience with sensors, interrupts, and practical home automation components while learning to apply Python skills to embedded systems.