Arduino Bluetooth Christmas Lights Display Board - Building a Stranger Things-Inspired LED Message Wall

Learn to build an interactive LED display board controlled via Bluetooth using Arduino and Android in this 30-minute tutorial video. Create a unique communication system inspired by the Christmas lights alphabet wall from "Stranger Things" by connecting WS2811 LED strings to an Arduino Nano and HC-05 Bluetooth module. Follow along with detailed hardware assembly, wiring instructions, and complete Arduino code implementation using the FastLED and AltSoftSerial libraries. Develop a custom Android mobile app using MIT App Inventor to send both pre-determined and custom text messages that illuminate LEDs beneath corresponding letters. Master the complete build process through structured segments covering hardware overview, wiring diagrams, code implementation, and Android app development, using affordable components totaling approximately £11 in materials.