Smart Door Mate Security System
Author : Ashish Siddharth Kokare, Ayushraj Ashok Ankush, Aadarsh Rajesh Kamble, Punit Krishna Fasage Journa Name: International Journal of Scientific Research & Engineering Trends Volume: 12 issue: 1 Year: Volume-12-issue-1 Views : 276Women Visitors arrive unannounced. Sometimes welcome, sometimes not. We built a doormat that watches. Raspberry Pi 4B+ waits quietly. Pressure sensor under mat feels weight, sends signal, system wakes. Telegram fires to owner: \"Someone at door.\" Servo rotates camera, captures face, transmits image. Remote eyes where none existed. No subscription, no cloud lock-in, no monthly fees. Telegram free, Pi owned, code open. Cost under ₹5,000, works on any door, alerts any phone. Continuous monitoring eliminated—mat sleeps, Pi dozes, power sips. Only presence triggers, only relevance notifies. Smart because selective, not because complex.
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