Engineering Electronic Projects | Project for Final Year

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PC Based Wireless Appliance Control

The parallel port of the PC is a powerful platform for implementing projects dealing with the control of real-world peripherals. It can be used to control home and other electronic appliances. The computer program through the interface circuit controls the relays, which, in turn, switch  the appliances ‘on’ or ‘off.’

· Santosh on August 22 2012 · In Engineering Electronic Projects · Read More · 0 Comments · 1627 Reads ·

RFID-Based Automatic Vehicle Parking System

RFID technology is used in vehicle parking systems of malls and buildings (refer Fig. 1). The system normally consists of a vehicle counter, sensors, display board, gate controller, RFID tags and RFID reader. Presented here is an automatic vehicle parking system using AT89S52 microcontroller. 

· Santosh on August 22 2012 · In 8051 Microcontroller · Read More · 0 Comments · 1493 Reads ·

Moving Message Display On LCD

Moving-message displays are ideal to get your message (advertisements, greetings, etc) across in an eye-catching way. You can make an LCD show a brief moving message by interfacing it to a microcontroller. 

· Santosh on August 22 2012 · In 8051 Microcontroller · Read More · 0 Comments · 1387 Reads ·

Photovoltaic Battery Charge Controller

A charge controller is one of  the main components of a solar battery charging system . Its main function is to fully charge a battery without permitting overcharge or reverse current flow (generally during night). If a solar array is connected to a lead-acid battery with no overcharge protection, the battery life is adversely affected.

· Santosh on August 22 2012 · In Power Suplies · Read More · 0 Comments · 1188 Reads ·

Dual-Tone Horn

The circuit uses a dual-timer IC LM556 (IC1) and penta-watt audio power IC TDA2003 (IC2) (refer Fig. 1). Both the timers of LM556 are wired as astable oscillators to generate square waves. The first timer is configured to generate a 400Hz audible tone and the second timer for a 550Hz tone.

· Santosh on August 22 2012 · In Audio Amplifiers · Read More · 0 Comments · 1256 Reads ·

Security Alarm

The circuit (refer Fig.1) is built around transformer X1, a standard bar magnet, reed switch S2, timer IC NE555 (IC1), opto-coupler IC MOC3020 (IC2), TRIAC BT136 and a few discrete components. Timer IC1 is wired as an astable multi-vibrator whose reset pin 4 is controlled by the reed switch. The reed switch fitted in the door frame acts as the sensor. A magnet is fixed on the door panel close to the reed switch.

· Santosh on August 22 2012 · In Security Systems · Read More · 0 Comments · 1065 Reads ·

Constant-Current Battery Charger

This circuit provides constant-current charging for batteries like nickel-cadmium (Ni-Cd), nickel-metal hydride (Ni-MH) and lithium-ion (Li-ion). The charger maintains constant current flow by using the property of the transistor that allows the current through the collector to be almost equal to the current through the emitter. 

· Santosh on August 22 2012 · In Power Suplies · Read More · 0 Comments · 1132 Reads ·

How to drive an led display matrix?

Here you can find out how to drive an led matrix with 64 LEDs (8 rows by 8 columns - 8x8 display) or less e.g. 35 LEDs (7 rows by 5 columns - 5x7 dot matrix). This is an easy DIY project which uses persistence of vision to let you drive the 64 led matrix with only 10 microcontroller outputs.

· Santosh on April 30 2012 · In 8051 Microcontroller · Read More · 0 Comments · 1957 Reads ·

Peak Level Monitor

Measurement of peak level is useful while testing an amplifier or a similar device. It is handy while testing a logic circuit, as it can pick up a high transient pulse (or show that there is none) and measure an output that is swinging strongly in both directions.

· Santosh on January 26 2012 · In Embedded Systems · Read More · 0 Comments · 1909 Reads ·

Mobile Bug, Mobile signal detector

This handy, pocket-size mobile transmission detector can sense the presence of an activated mobile phone from a distance of one and a-half metres. So it can be used to prevent use of mobile phones in examination halls, confidential rooms, etc. It is also useful for detecting the use of mobile phone for spying and unauthorised video transmission.

· Santosh on January 26 2012 · In Embedded Systems · Read More · 0 Comments · 2140 Reads ·

Motion Sensor for Security Light

Here is a system based on PIR motion detector module BS1600 (or BS1700) that can be used for security or corridor lighting in power-saving mode. The working of the circuit is simple. When you power-on the circuit after assembling all the components including the CFL, the CFL will glow for 10 seconds, turn off for 30 seconds, glow for 10 seconds and then turn off. Now the circuit is ready to work.

· Santosh on January 26 2012 · In Security Systems · Read More · 0 Comments · 2082 Reads ·