Welcome back for the grand finale of our Arduino UNO Q Elf Detector Series! The Elf surveillance system from Part 4 is running, and I have successfully identified unauthorized movement near the cookie jar. But detection without consequence is just a documentary. I don't want to watch them steal my tools; I want to stop them. Now it's time to bring everything together! In this final part, we will build a complete integrated holiday monitoring system that combines all the technologies we've learned: voice control, LED matrix displays, object detection, and MQTT messaging ‐ all working together in perfect harmony to stop the intruders!



