Category: Featured

Featured Projects

GSM Based Automatic Meter Reading and Billing System

GSM Meter Reading
GSM Meter Reading and Billing System

Abstract :

GSM based Automatic meter reading is the technology of automatically collecting data from energy meter and transferring that data to a central database for billing and/or analyzing. The Transmitter circuit is connected to the meter which counts the pulses from it and displays it over the LCD display. The transmitter circuit containing a GSM modem for data transforming, which transforms the meter reading after each 10 pulses to a particular number through SMS. Read more

Home security system using GSM

GSM Home security system


Home/ Bank/ Office security has been a major issue where crime is increasing and everybody wants to take proper measures to prevent intrusion. In addition there was a need to automate home so that user can take advantage of the technological advancement in such a way that a person getting off the office does not get melted with the hot climate.

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Blood pressure monitor project

Blood pressure monitor using Atmega32



Our final project is to design and build a portable blood pressure monitor device that can measure a user’s blood pressures and heart rate through an inflatable hand cuff. The device is consisted of three main parts: external hardwares (such as cuff, motor, valve, and lcd), analog circuit, and microcontroller. The anolog circuit converts the pressure value inside the cuff into readable and usable analog waveforms. The MCU samples the waveforms and performs A/D convertion so that further calculations can be made. In addition, the MCU also controls the operation of the devices such as the button and lcd display. Since we have the word ‘portable’ in our title, for sure all of the components are put together in one package which allows a user to take it anywhere and perform a measurement whenever and wherever he/she wants. Read more

Secured roomm access system (ATMEGA8535 BASED DOOR LOCK)

Secured room access system (ATMEGA8535 BASED DOOR LOCK)



Security is a prime concern in our day-to-day life. And access control system forms a vital link in a security chain. The microcontroller-based digital lock presented here is an access control system that allows only authorised persons to access a restricted area. When someone tries to enter the restricted area by entering invalid passwords continuously, the system locks itself and can be unlocked only by the master user. The system comprises a small electronic unit with a numeric keypad, which is fixed outside the entry door to control a solenoid-operated lock.When an authorised Read more

Microcontroller based Water Level Controller cum Motor Protector

water level controller


The Microcontroller based Water Level Controller cum Motor Protector controls ‘on’ and ‘off’ conditions of the motor depending upon the level of water in the over head tank (OHT), the status of which is displayed on an LCD module. The circuit also protects the motor from high voltages, low voltages, fluctuations of mains power and dry running.

The circuit of the Microcontroller based Water Level Controller cum Motor Protector comprises of the operational amplifier LM324, microcontroller AT89C51, optocoupler PC817, regulator 7805 and an LCD module. Port pins P2.0 through P2.2 of the AT89C51 (IC2) are used to sense the water level, while pins P2.3 and P2.4 are used to sense the Read more

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