Guides
Security Guides
Step-by-step security projects with wiring diagrams, component lists, and ready-to-deploy code.
Security
How to Build an ESP32 Video Doorbell
Build an ESP32-CAM video doorbell with a local Wi-Fi camera feed, physical doorbell button, passive buzzer chime, status LED, and browser live-view page.
ESP32Intermediate45 minutes
Security
How to Build a Laser Tripwire Alarm Demo with Arduino
Build a classroom-safe Arduino beam-break alarm demo using a low-power laser, LDR photoresistor, 10k resistor, and piezo buzzer.
Arduino UnoBeginner30 minutes
Security
How to Build an ESP32 Security Camera
Build a small ESP32-CAM security camera with a USB programmer adapter, browser upload, and a local live-view page.
ESP32Beginner25 minutes
Security
How to Build an RFID Treasure Chest with ESP32
Design an ESP32 RFID treasure chest with MFRC522 reader, servo lock, buzzer, and OLED. Valid tags unlock the chest with a success tune.
ESP32Intermediate50 minutes