ACCESS CONTROL SYSTEM DEVELOPED BY H.S RIYAT

WELL…. WELL…….. WELL………

THIS IS A SECURITY RELATED PROJECT.
IT’S ELECTRONIC LOCK.

IT TAKES 5 OR 6 OR 8 OR WHATEVER U DESIRED CODE .AND THEN UNLOCKS ANY DEVICE ,DOOR, OR
ANY THING U WANNA SECURE WITH DIGITAL LOCK.

IT IS BASED ON P89V51RD2 MICROCONTROLLER AND SOME BURNING HEAD PROGRAMMING WRITTEN C LANGUAGE.

It works based on the unique software developed by me and is written in Embedded C - language. User passwords can be changed at any time but only through ADMIN mode. ADMIN password can only changed by burning a new password into the flashrom of the microcontroller. It uses no external memory and internal RAM is used to store the passwords of the Users.

12W PER CHANNEL STEREO AMPLIFIER SYSTEM

This is a stereo Amplifier system which gives 12 W per channel

It is based on the famous chip TDA2009A and is not too much costly.

12W per channel can only be obtained with power supply of 24V or 22V but should be of 3A.

Features:

• 2 head phone connectors
• Left Right separate Volume controller
• Out speaker connector

Ok now time is to mount it inside a perfect box to protect the circuit and for easy to use.
Well now to make the system more attractive we can add VU meter Display to the front .

All controls and connectors are in back side of box…….

Here Lm3915 is used and 10 leds are used to make the visual display..

And the whole system is placed inside a lan router box so compactly and it looks great……..

and functions wonderfully!!!!!!!!!!!

HERE'S THE COMPLETED *****DEVICE

ISP Programmer for P89V51RD2FN MC

This is a in- system programmer for p89V51RD2 microcontroller .

All is need to be done to program the micocontroller connect the db 9 connector and power cable .

its the easiest programmer among all programmers to construct.

A 9v unrectified power supply is the input to the microcontroller.

components used are —–

L7805 regulator

ST232 chip–driver Ic

Doide–1n4007

capacitor’s

10mf 16v–4 piece

2200mf 25V —one

The hex can be generated using the universal software called flash magic

Just by hitting the start button in flash magic and by pressing the onboard reset button microcontroller is programmed.