https://github.com/deratheone/motion_detection_system

An Arduino-based security system that detects motion using an ultrasonic sensor and triggers a buzzer and RGB LED alarm. Supports day, night, and always-on modes with auto arming/disarming using an LDR, and mode selection via touch sensor. Ideal for home security and demos.

arduino motion motion-sensor security sensors

Last synced: 13 Jul 2025