Electronics and Electrical Engineering Design Projects

Featured electronics and electrical engineering design projects.

Featured Projects by Members

  • Figure:1 Circuit Diagram of DTMF Controlled Home Automation System

    DTMF Controlled Home Automation System

    Posted Jul 16, 2014 By Sudheer Gupta
    Generally, appliances used in our home are controlled with the help of switches. These days, you can see automation of these appliances using many technologies. This article presents the controlling of home appliances using DTMF technology. DTMF is acronym for Dual Tone Multi Frequency. So, just think when you make call for customer care, they will ask you to press 1, 2 or any other number. When…
  • Figure:2 Password based door lock system circuit diagram

    Password Based Door Locking System using 8051

    Posted Jul 09, 2014 By Sudheer Gupta
    This circuit operates on the principle of microcontroller interfacing. A keypad interfaced to the microcontroller is used to enter the password and store it. A LCD is interfaced to the microcontroller to display the status and a motor is interfaced to the microcontroller via the motor driver. The motor is rotated forward or backward, depending on the authenticity of the entered…
  • Figure:3 Requirements

    Street Light Control System

    Posted Jul 02, 2014 By Wasim Khan
    Here is our new simple Electrical/Electronics project about Automatic Street Light Control System. It is simple and a powerful concept, which uses transistor (BC 547 NPN) as a switch ON and OFF the street light system automatically. It automatically switches ON lights when the sunlight goes below the visible region of out eyes (e.g. in the evening after sunset). It automatically switches OFF…
  • Figure:4 Luggage Security Alarm Circuit Diagram

    Luggage Security Alarm Circuit

    Posted Jun 30, 2014 By Sudheer Gupta
    During our journey through train and bus, we carry many important things and all the time we have fear that someone might lift our luggage. So to protect our baggage, we normally lock our baggage through old ways by the help of chain and lock. After all locks, we still remain in fear that someone may slash the chain and take away our valuable material. To overcome with these fear, here is an easy…
  • Figure:5 digital tachometer circuit diagram

    Non Contact Tachometer Circuit using 8051 Microcontroller

    Posted Jun 30, 2014 By Sudheer Gupta
    Here we design a simple non-contact tachometer using microcontroller, which can measure speed with an accuracy of 1 rev/sec. Principle Behind the Circuit The basic principle involves a simple embedded system with a sensor, a controller and an actuator. The sensor used here is the one consisting of a white LED and a phototransistor, the controller used is the microcontroller loaded with a…
  • Figure:6 Circuit Diagram of Airflow Detector Circuit

    Air Flow Detector Circuit

    Posted May 28, 2014 By Sudheer Gupta
    Air flow detection is often necessary in many applications or systems where it is necessary to detect the presence of air to have a descriptive picture of the proper functioning of the systems. Principle Behind Air Flow Detector Circuit Here, a simple air flow detector circuit is developed which uses a resistance temperature detector as the basic component. This circuit is based on two…
  • Figure:7 230v LED Driver Circuit Diagram

    230 V LED Driver Circuit

    Posted May 21, 2014 By Sudheer Gupta
    Here we design a simple circuit driving a series of LED from 230V AC. This is accomplished using a capacitor based power supply. This is a low cost and efficient circuit and can be used at homes. 230 V LED Driver Circuit The basic principle behind this circuit is transformer less power supply. The main component is the X-rated AC capacitor which can reduce the AC voltage to a suitable…
  • Figure:8 Password based Door Lock System Circuit Diagram

    Password Based Door Lock System using 8051 Microcontroller

    Posted May 14, 2014 By Sudheer Gupta
    This system demonstrates a circuit named Password based Door Lock System wherein once the correct code or password is entered, the door is opened and the concerned person is allowed access to the secured area. After some time, the door would close. Again if another…
  • Figure:9 Celsius Scale Thermometer Circuit Diagram

    Celsius Scale Digital Thermometer using 8051 Microcontroller

    Posted May 07, 2014 By Sudheer Gupta
    The circuit works on the principle of analog to digital conversion. The temperature is sensed by a analog temperature sensor and this analog value is converted to a digital value using an ADC. A microcontroller then processes the digital signal to display the temperature reading in Celsius on the display screen. *Circuit Diagram of Celsius Scale Thermometer using AT89C51 and…
  • Figure:10 Poster Presentation of App

    First Step Android App

    Posted Apr 30, 2014 By James Faraday
    The first step the app provides users a comfortable and anonymous route through which they can pursue self-assessment and mental health resources. It utilises the Goldberg Depression Questionnaire which was developed by Dr Ivan Goldberg, MD. The results of this questionnaire are then used to intelligently provide resources based on the weight of different answers for different questions. For…

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