NDH2K13 Quals circuit | Next Electronics

electronic hotel door vulnerability using stealth lock circuit

The term "pentester" refers to a penetration tester, individuals who assess security vulnerabilities. Many high-end hotels globally depend on keycard locks for securing hotel rooms. However, recent incidents of theft have shown that these locks may not be as secure...

Security alarm

This alarm features both open-loop and closed-loop detection systems along with an automatic alarm shutoff mechanism. It provides a 15-second delay for exit and entrance. Additionally, the alarm activation time can be adjusted from 1 to 15 minutes. The alarm system...

Key Code Combination High Security Door Lock

This project involves an electronic lock that supports numerous combinations, which can be easily modified. It unlocks only with the correct sequence of four consecutive numbers. A significant feature of this electronic lock is that the four numbers must be...

Home Security System

This alarm circuit activates when switches S1 through S5 are engaged. This action illuminates LED1 and triggers transistor Q1 through integrated circuits IC1C and IC1D. Relay RY1 is configured for self-latching. Switch S10 is utilized for resetting the circuit. When...

Security-door-ajar-alarm

The TL3019 device activates, or goes low, when a south pole of a magnet approaches the chip face. In this example, there are five doors, each equipped with a magnet embedded in its edge, with the south pole facing outward....

Security Monitor

This circuit can be utilized in a garden setting to detect unusual sounds or wildlife noises. It can also monitor sounds around a car parked in a remote location. The cable used for the setup can either be visible or...

Embedded Web Server for Water Level Monitoring

Throughout this year, significant attention has been dedicated to the development of an embedded web server device, a concept that has long been envisioned. This idea is not entirely original; it builds upon existing developments and references available on various...

Electronic Locker Guard

Protect your locker or briefcase from theft using this pocket-sized gadget. It emits a loud police siren to attract attention. The circuit utilizes a single integrated circuit (IC). This circuit is designed to provide a compact and effective security solution for...

Electronics Projects Circuits

Over 1400 top electronics projects and electronic circuits with photos, datasheets, and easy-to-read schematics, along with explanations of how they work and how to build them. The collection comprises a vast array of electronics projects suitable for enthusiasts and professionals alike....