Introduction Consider you are in a research lab that handles highly hazardous material. You don’t want anybody to enter the room, to even come close to the door. Or consider yourself doing something highly confidential in a room that you would like to know if someone is trying to get in. In all these cases, […]
Portable Security System Using ATMega 32 Read More »
Introduction We designed a multi-zone fire alarm system with a VT100-compatible user interface. The system is microprocessor controlled using the Mega32 microprocessor. The system communicates to the VT100-compatible user interface via a RS232 connection. A fire is detectable by a number of fire detection devices in each of as many as eight zones. High-level Design
Multi-Zone Fire Alarm System Using Mega32 Microprocessor Read More »
Overview: Our security system is a stand alone device that allows access to registered users identified by their magnetic cards.(For this project, “access” is represented by a lit LED, showing how the system could be used to control an external locking mechanism.)The system includes features such as: Multiple accounts, including Administrator accounts (which can create,
Security Entrance System Read More »
Introduction The design philosophy behind the JI1000 is a simple, yet powerful microcontroller based mobile security system. At the heart of the JI1000 is the Atmel AT90S4414 8-bit RISC microcontroller. We used the 4414 for this design because a microcontroller is well-suited for a security system. The basic control functions for our system include monitoring
Clifford Systems JI1000 Car Alarm System Read More »
Introduction and Motivations: For our final project, we designed and built (and exhaustively tested) an RFID-based proximity security system for use with Cornell Identification cards, which have been RFID-embedded since fall of 2003. The idea for this project was sort of spawned from our general interest in RFID technologies and the near-simultaneous occurance of Lab
RFID security system using ATmega32 microcontroller Read More »
An ATtiny12 controller as a timer and some switching circuitry turns the doorbell off for 10 hours at the same time each day. The string of resistors across the top of the board are series connected to make a 728 Ohm 2 watt resistor. The slide switch is used to switch the circuit between the
Door Chime Privacy Sentry using Attiny12 Read More »
Overview The circuit shown in Figure 1 is capable of driving an LED array requiring up to several amps with a burst of flashes before coming on until power is removed. It is intended to be used as an auxiliary warning light driver. The initial burst of flashes is meant to enhance visual detection of
Attention-Getting Auxiliary Warning Light Flasher/Driver Read More »
MMC/SD/SDHC card library This project provides a general purpose library which implements read and write support for MMC, SD and SDHC memory cards. It includes low-level MMC, SD and SDHC read/write routines partition table support a simple FAT16/FAT32 read/write implementation The circuit The circuit which was mainly used during development consists of an Atmel AVR
MMC/SD/SDHC AVR Interface using ATMega8 microcontroller Read More »
Microcontroller Microcontroller ‘s (MCU) is a kind of CPU (CPU) can be seen as. MIB MCUs from slower and less capable of addressing memory, but they are designed for the implementation of real-time control problems both cheaper and easier to use. The major difference between CPU and MCU are required to use external hardware. MCU, almost every time,
About Atmel and Combination Lock Application using AT90S2313 microcontroller Read More »
The Security Keypad Lock Project is a basic access control system based on ATtiny2313. It can be modified to protect just about anything. The “Code Lock” ability will allow the rightful user to deploy the platform to any property that requires simple password-protection. The “AVR” RISC microcontroller used ensures low costs. Possible applications may include:
AVR Security Keypad Lock using ATtiny2313 microcontroller Read More »
