Explore an escape room project tutorial that demonstrates how to create a binary card reader using an ESP32 or Arduino. Learn to decode binary values encoded in punched cards or discs using an array of lasers and light-dependent resistors (LDRs). Discover the voltage divider circuit technique for reading hole patterns and translating them into numbers, letters, or messages. Gain insights into object identification methods and potential applications in escape room scenarios. Follow along with detailed explanations of wiring diagrams, schematics, and Arduino code listings. Understand how to differentiate between 32 unique patterns using just 5 lasers and LDRs. Perfect for escape room designers, electronics enthusiasts, and Arduino hobbyists looking to enhance their interactive project skills.