Detects intrusion when someone crosses an invisible laser tripwire using LDR threshold monitoring and instantly alerts the user via Telegram messages, calls, and automated gate locking.
Built with ESP32, LDR sensor, and Telegram Bot API. The system monitors a laser tripwire continuously — when the beam is broken, it triggers the ESP32 to send instant alerts via Telegram (text, voice call) and activates an automated gate lock mechanism.