Electronics Archives - Edgefx Tech Official Blog

Automatic Wireless Health Monitoring System for Patients

February 1, 2018 by Tarun Agarwal Leave a Comment

Automatic Wireless Health Monitoring System by Edgefxkits.com

At the present time, the sensors used in the healthcare are playing a vital role in hospitals. The patient observing system namely “An automatic wireless health monitoring system “is one of the main advanced due to its innovative technology. This system is used to calculate the temperature of the patient’s body & heartbeat by using embedded technology. The sensors used in the proposed system are a temperature sensor and heartbeat sensor. These two sensors mostly used in monitoring the condition of the patient.

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Solar Powered LED Street Light with Auto Intensity Control

January 30, 2018 by Tarun Agarwal Leave a Comment

Solar Powered LED Street Light with Auto Intensity Control

The solar-powered LED street light works on the principle of solar cells or PV cells to absorb the solar energy in the daytime. The PV cells convert solar energy into the electrical energy. The converted energy is stored in the battery and the solar street lights use solar energy. Nowadays solar street lights are available beside the roads. At the night time, the lamps start automatically and it uses the electrical energy which is stored in the battery. Every day this process continues.

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EFX Electronic Learning Kit-30 Projects-in-1

December 22, 2017 by Tarun Agarwal Leave a Comment

EFX Electronic Learning Kit-30 Projects-in-1

In the previous article, we have already discussed 15 projects in 1.But, this article covers some of the Electronic Learning Kits namely 30 projects in 1 to get you on track in the making and development of your school level projects. While you may decide to use any of these projects, we preferably used mini breadboards to guide you in developing your own electronic project kits. We have kept them extensive so that any school student can work out the details. Keep in mind that these mini breadboard projects should be continued throughout the school year and contain strong aims and deliverable. The catch fire contest held by various foundations – India is giving a better platform to the young students to research and think innovate, and come up with something strange.

Every year there are many foundations have been receiving thousands of entries for the competition by various school students across India. We encourage you to associate with local community organizations. Screenings have to take place in the school, but additional project activities may take place in the group of people at your partners’ locations. Be conscious that many of these Electronic Learning Kits may have gone beyond focuses both on the rights they are investigative as well as in the assets that they use. In order to assist students to discover issues that are exact to themselves and to children’s.

EFX Electronic Learning Kit – 30 Projects-in-1

Generally, success in Electronic Learning Kits plays a significant role in the career of school students. So, we recommend beginners start with this 30 Projects-in-1 on a breadboard which will work or not in your first effort.You can buy any of the below-listed projects from us for your school science fair demonstration.Please refer the link for: EFX Electronic Learning Kit – 15 Projects-in-1

Project 16

The main objective of this project is to demonstrate the DC motor to know how electrical energy is converted into electrical energy.This circuit can be built with PSU (power supply unit) and PI red LED (power indicator), push button switch (S1) and DC motor (LU4). The below figure gives the circuit diagram and connect the circuit as per the diagram is shown in below.

Demonstrate the DC Motor

Project 17

The main objective of this project is to demonstrate the use of fuse to make electrical circuits safer with a motor output.This circuit can be built with PSU (power supply unit) and PI red LED (power indicator), jumper J and DC motor (LU4).The below figure gives the circuit diagram and connect the circuit as per the diagram is shown in below.

Demonstrate the use of Fuse

Project 18

The main objective of this project is to demonstrate how electricity is converted into sound, light and at the same time mechanical energy also.This circuit can be built with PSU (power supply unit) and PI red LED (power indicator), DC motor (LU4), LED white (LU3) and buzzer L4. The below figure gives the circuit diagram and connect the circuit as per the diagram is shown in below.

Demonstrate how Electricity is Converted into Sound

Project 19

The main objective of this project is to demonstrate the characteristics of current, voltage and resistance in a parallel circuit.This circuit can be built with PSU (power supply unit) and PI red LED (power indicator), DC motor (LU4), and buzzer L4. The below figure gives the circuit diagram and connect the circuit as per the diagram is shown in below.

Demonstrate the Characteristics of Current, Voltage and Resistance

Project 20

The main objective of this project is to demonstrate the series and parallel circuits effect on loads.This circuit can be built with PSU (power supply unit) and PI red LED (power indicator), DC motor (LU4), and buzzer L4. The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.

Demonstrate the Series and Parallel Circuits

Project 21

The main objective of this project is to demonstrate the use of a DC motor block alongside the freewheeling diode and the DC motor. This circuit can be built with PSU (power supply unit), push button switch S1, transistor C547 QU1, PI red LED (power indicator), DC motor (LU4).The below figure gives the circuit diagram and connect the circuit as per the diagram is shown in below.

Demonstrate the use of a DC Motor

Project 22

Demonstration of usage of capacitor alongside the DC Motor (in the DC Motor block LU4). This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), push button switch (S1), Diode- 1N4148, Transistor BC 547, Resistors, Capacitors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of Usage of Capacitor

Project 23

Demonstration of this OR that logic (OR Gate Logic) using inputs as Push Button Switches and output as Buzzer.This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), 2- push button switches (S1), Buzzer L4, Resistors, Capacitors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of OR Gate Logic

Project 24

Demonstration of this OR that logic (OR Gate Logic) using inputs as Push Button Switches and output as DC Motor.This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), 2- push button switches (S1), DC Motor LU4, Resistors, Capacitors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram shown in the below diagram.

Demonstration of OR Gate Logic

Project 25

Demonstration of this OR that logic (OR Gate Logic) using inputs as Push Button Switches and output as LED (Light Emitting Diode).This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), 2- push button switches (S1), LED White, Breadboard, Resistors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of OR Gate Logic

Project 26

Demonstration of this AND that logic (AND Gate Logic) using inputs as Push Button Switches and output as Buzzer.This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), 2- push button switches (S1), Buzzer L4, Resistors, Capacitors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of AND Gate Logic

Project 27

Demonstration of this AND that logic (AND Gate Logic) using inputs as Push Button Switches and output as DC Motor.This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), 2- push button switches (S1), DC Motor LU4, Diode- 1N4148, Breadboard, Resistors, Capacitors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of AND Gate Logic

Project 28

Demonstration of this AND that logic (AND Gate Logic) using inputs as Push Button Switches and output as LED (Light Emitting Diode).This circuit can be built with PSU (Power Supply Unit) of 5V, Red LED (Power Indicator), 2- push button switches (S1), LED White, Breadboard, Resistors, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of AND Gate Logic

Project 29

Demonstration of Dual LED Function. This circuit can be built with PSU (Power Supply Unit) of 5V, Dual LED, red LED (Power Indicator), 2- push button switches (S1), Breadboard, Resistor, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of Dual LED Function

Project 30

Demonstration of RGB LED Function. RGB(Red-Green-Blue) LEDs are actually three LEDs in one package, but that does not mean it can only produce three colours. Because red, green, and blue colours are the additive primary colours, you can control the intensity of each to create every colour of the rainbow (VIBGYOR). RGB LED has 4 pins: one for each colour, and a common pin.This circuit can be built with PSU (Power Supply Unit) of 5V, RGB LED, red LED (power indicator), 3- push button switches (S1), Breadboard, Resistor, Jumper wires and Connecting wires.The below figure gives the circuit diagram. Connect the circuit as per the circuit diagram is shown in the below diagram.

Demonstration of RGB LED Function

Thus, above are some of the Electronic Learning Kits to get you on track in the making and development of your school level projects. While you may decide to use any of these projects, we preferably used mini breadboards to guide you in developing your own projects. We have kept them extensive so that any school student can work out the details. Keep in mind that these mini breadboard projects should be continued throughout the school year and contain strong aims and deliverable.

EFX Electronic Learning Kit-15 Projects-in-1

December 15, 2017 by Tarun Agarwal Leave a Comment

15 projecs in 1

The young mind is the sharpest mind. It learns quick and acts quicker. Nowadays, the education system focuses on books and rote-learning, but times are changing as these young geniuses, who chose to take a different path, have proved. To those of us who teach and love our subjects, it seems unintelligible that students are not loving about them.Practical learning experiences when students are actively busy in query work, where they are reading, questioning, talking, analyzing & making small projects many groups independently. The main purpose of project work is to provide a structure through which students can show mastery of a subject by making, creating an Electronic Learning Kit project that is driven by their personal interest in a topic While the projects can appraise the students’ knowledge to which students have understood them, they also let students imagine intensely and logically.

EFX Electronic Learning Kit – 15 Projects-in-1

Generally, success in Electronic Learning Kits plays an important role in the career of school students. Many students quit this branch because they fail on their first try of their projects. After a few failures, a student has a myth that Electronic Learning Kits working currently might not work correctly tomorrow. So, we recommend beginners start with this 15 Projects-in-1 on a breadboard which will work or not in your first effort.You can buy any of the below-listed projects from us for your school science fair demonstration.

Project-1

The main objective of this project is to determine the open and closed circuit concept.This circuit can be built with PSU (power supply unit) and PI red LED (power indicator).The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.

Open and Closed Circuit

Project-2

The main objective of this project is to demonstrate how electricity is used to generate sound using the push button and a buzzer.This circuit can be built with (power supply unit), PI red LED (power indicator), S1(push button switch) and L4 buzzer.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.

How Electricity is Used

Project-3

The main objective of this project is to demonstrate how LED valves let the flow of electricity only in one direction.This circuit can be built with PSU (power supply unit), PI red LED (power indicator), S1 (push button switch) and reversed LED LU3.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.Retain project 3 and replace LED LU3 in reverse direction

How LED Valves Let the Flow of Electricity

Project-4

The main objective of this project is to demonstrate how electricity is used to light up an LED.This circuit can be built with PSU (power supply unit), PI red LED (power indicator), S1 (push button switch) and LED LU3.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.

How Electricity is Used

Project-5

The main objective of this project is to demonstrate insulator and conductor of electricity.This circuit can be built with PSU (power supply unit), PI red LED (power indicator), jumper J and LED LU3.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.Retain project 3 and replace the push button switch S1 with a jumper J.

Insulator and Conductor of Electricity

Project-6

Insulator and Conductor of Electricity

Project-7

The main objective of this project is to demonstrate the function of a resistor in series with a buzzer.This circuit can be built with PSU (power supply unit), PI red LED (power indicator), 330R resistor, buzzer L4.

The Function of a Resistor

Project-8

The main objective of this project is to demonstrate how a series resistor is used to guard an LED. This circuit can be built with PSU (power supply unit), PI red LED (power indicator), 330R resistor, LED LU3.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below. Retain project 7 and replace the Buzzer L4 with a red LED LU3.

How a Series Resistor is Used

Project-9

The main objective of this project is to demonstrate how electrical circuits can be built to turn on various loads at a time without disturbing the other load’s performance. This circuit can be built with (power supply unit), PI red LED (power indicator), LED white LU3, Buzzer L4.

How Electrical Circuits Can be Built

Project-10

The main objective of this project is to demonstrate the use of transistors using the push button switch for input and buzzer for output.This circuit can be built with PSU (power supply unit), PI red LED (power indicator), Buzzer L4, push button switch (S1), transistor BC 547 QU1 block.

The use of Transistors

Project-11

The main objective of this project is to demonstrate how transistor as a switch can control the output of an LED This circuit can be built with PSU (power supply unit), PI red LED (power indicator), LED LU3, push button switch (S1), transistor BC 547 QU1 block.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below. Retain project 10 and replace the Buzzer L4 with a red LED LU3.

How Transistor as a Switch

Project-12

Demonstration of Push Button Switch in reverse function with Buzzer for output.This circuit can be built with PSU (power supply unit) of 5V, red LED (power indicator), push button switch, Breadboard, Transistor BC547, Buzzer L4, jumper wires and connecting wires.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.

Push Button Switch in Reverse Function

Project-13

Demonstration of Push Button Switch in reverse function with LED for output.This circuit can be built with PSU (power supply unit) of 5V, red LED (power indicator), push button switch, Breadboard, Transistor BC547, LED LU3, jumper wires, and connecting wires. The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.Retain project 12 and replace the Buzzer L4 with a red LED LU3.

Push Button Switch in Reverse Function

Project-14

To demonstrate, “The human body is a good conductor of electricity” using human touch as input and the buzzer output.This circuit can be built with PSU (power supply unit) and red LED (power indicator), Breadboard, 2- Transistor BC547, Buzzer, connecting wires.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below.

Human Body is a Good Conductor of Electricity

Project-15

Amplification of the current via Darlington transistor.This circuit can be built with PSU (power supply unit) and P1 red LED (power indicator), Breadboard, 2-Transistor BC547, Buzzer L4, and connecting wires.The below figure gives the circuit diagram and connects the circuit as per the diagram is shown in below. Retain project 14 and replace the Buzzer L4 with a red LED LU3.

Amplification of the Current via Darlington Transistor

Music Tone Based Dancing LEDs

October 25, 2017 by Tarun Agarwal Leave a Comment

Music Tone Based Dancing LEDs

We must have seen the dancing LEDs in discotheque or DJ lights, which Turn ON and OFF based on the music beats. These lights blink according to the volume and length of music beats. Basically, these are intended to choose the high-intensity sound such as Bass sound. So these lights go after the high pitch beats in tune like drum beats, and Turn ON & OFF based on the music pattern. In the past, we have built Dancing LEDs, which just goes to a set pattern and we can only manage the speed. Now we are taking this to next level, i.e. Music Tone Operated Dancing LEDs, in which light emitting diodes will blink according to music beats like a Disco light. This Musical LEDs system is very simple and easy to design, it just requires few basic electrical and electronic components and it appears very cool.

Music Tone Based Dancing LEDs

The proposed system is implemented in such a way that the lights blink according to the musical tones. This music operated running LEDs circuit uses integrated circuits. The music tones are detected by a condenser microphone which is then amplified by an IC. The o/ps of the IC are fed to the transistors to make the bulbs blink or dance as per the music played.

Music Tone Based Dancing LEDs

Hardware Requirements

The hardware requirements of music tone based dancing LEDs include decade counter IC, op-amp, transistors, potentiometers, condenser microphone, diodes, led’s, capacitors and resistors.

Music Tone Based Dancing LEDs Block Diagram

Battery

An electrical battery is an arrangement of one or more electrochemical cells, used to change stored chemical energy into electrical energy. The battery is a common power source for numerous applications like a household, robotics, and industrial applications. Larger batteries give standby power for telephone connections or computer data centres.

Battery

1N4148

The 1N4148 is a standard small signal silicon (Si) diode used in signal processing. Its name follows the JEDEC arrangement.

1N4148

OP-AMP

An operational amplifier or op-amp is a DC-coupled high-gain electronic voltage amplifier with a differential input & a single-ended o/p. An operational amplifier generates an o/p voltage that is usually thousands of times larger than the voltage difference between its i/p terminals.

Op-Amp

The circuit symbol for an operational amplifier is shown, where:

Non-inverting input
inverting input
Output
Positive power supply
Negative power supply

Condenser Microphone

Condenser (capacitor) is an electronic component used to store energy in the form of an electrostatic field.
Actually, the term itself is obsolete but has fixed as the name for this sort of microphone, which employs a capacitor to change acoustical energy into electrical energy.
The resultant audio signal is a stronger signal than that from a dynamic.
The electrets condenser mic uses a particular type of capacitor which has a stable voltage built in during manufacture.
This is somewhat like a stable magnet, in that it doesn’t need any external power for operation.

Condenser Microphone

Audio Level Indicator IC (CTC1403)/Decade Counter IC(4017)

In electronics, counters can be executed quite easily using register type circuits like FF (flip-flop) and a wide variety of types exist. The 4017 decade counter has 10 outputs which go HIGH in series when a starting place of pulses is connected to the input of the CLK and when appropriate logic levels are applied to the inputs of the RESET and ENABLE pins.

Audio Level Indicator IC

Inside The 4017

Essentially, the logic state of the D FF or data i/p is transferred to the Q o/p on the rising edge of the CLK signal.For a shift register, the CLK inputs of all the D-type stages are connected together so that all the FFs are clocked at the same time.

Inside The 4017

The diagram shows how the Johnson counter outputs can be decoded to give a 1 of 6 outputs:

Johnson counter

Music Tone Based Dancing LEDs Working

The proposed system is projected to design musical tone based dancing LEDs those light up in synchronization with the music beat played.

This project is built with a microphone through which the tone is picked up and amplified. Then this signal activates a series of LEDs through an intermediate circuit. Hence, blinking of LEDs happens when an audio music continually changes its beat. As a result, a musical sequence of changing LEDs shows with the varying beat of the music.

Music Tone Based Dancing LEDs Project Kit by Edgefxkits.com

In future, this system can be improved by using TRIACs and Opto-Isolators to use high power lamps instead of LEDs.

Thus, this is all about music tone based dancing leads. We hope that you have got a better understanding of this concept.Furthermore, any doubts regarding this concept or to implement any electrical and electronic projects please give your valuable suggestions by commenting in the comment section below. Here is a question for you, what are the applications of dancing LEDs?

Speed Checker to Detect Rash Driving on Highways

October 2, 2017 by Tarun Agarwal 2 Comments

Rash Driving Detection

While driving on highway, traveler should not exceed maximum speed limit allowed for their vehicle. However accidents keep happening due to speed violation since the drivers tends to ignore their speedometers. The speed checker will come for the highway traffic police as it will only provide digital display in accordance with a vehicle speed but also give an alarm if the vehicle exceeds the permitted speed for the highway. This article presents a rash driving detection system to detect rash driving on highways and to aware the traffic authorities in case of any contravention. In past, there are several devices to detect rash driving on highways but, most of the advances need human interference and need a lot of effort, which is hard to execute. In this, we intend to design a system namely speed checker to detect rash driving on highways.

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Hidden Active Cell Phone Detector

September 25, 2017 by Tarun Agarwal 2 Comments

Hidden Active Cell Phone Detector

Nowadays, the rapid development of cell-phones has raised a lot of problems. In addition, public response was rising against the difficulty of cell phones introduced in daily life. Here is a simple project that is “hidden active cell phone detector”. The cell phone detector is a pocket sized which can be used to detect the hidden active cell phone. So the proposed system is used to ignore the use of cell phones in some of the public places like exam halls, defense establishments, private rooms, military camp, hospitals, petrol pumps and also very useful for detecting the use of mobile phone for intelligence work and other correlated activities. This system can detect SMS, calls, video transmission even when the cell phone is secreted in silent mode. The quick bug detects RF (radio frequency) transmission signal from a cell phone, it produces a beep sound alarm.

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Human Body Temperature Sensed Automatic Door Opening System

September 19, 2017 by Tarun Agarwal 2 Comments

Human Body Temperature Sensed Automatic Door Opening System

The automatic door opening systems are used in commercial buildings, shopping malls, theaters, etc. These systems are used to open and close the door when a person comes near to the entry of the door and close it after the person entered into the door. This kind of system can be built by using various kinds of sensors such as PIR sensors, Radar sensors, Laser sensors,and Infrared sensors etc. This project uses a PIR sensor to sense the infrared (IR) energy generated by the human body.When somebody come close to the door, the IR energy sensed by the sensor transforms and triggers the sensor to open and close the door routinely. Further, the indication sent to microcontroller to control the door.

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Vehicle Tracking System using GSM and GPS

September 12, 2017 by Tarun Agarwal 6 Comments

GSM- GPS based Vehicle Tracking Project

At present, almost of the public having their own vehicle, burglary is happening in insecurity places like vehicle parking, driving, etc. The protection of vehicles is very necessary for public transportation. The vehicle is tracing and security system fixed in the vehicle to trace the place and locking the vehicles engine motor. The location of the vehicle recognized using Global Positioning system and Global system mobile communication. These two systems continually watch a moving vehicle and report the position on request. When the burglary recognized, the responsible person sends an SMS to the microcontroller, then microcontroller issue the control signals to halt the engine motor. Authorized person needs to send the PIN to controller to restart the vehicle and open the door. This is more protected, trustworthy and low-cost.

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Electronic Eye Controlled Security System

September 6, 2017 by Tarun Agarwal 2 Comments

Electronic Eye Controlled Security System Project

The electronic eye controlled security system is invented in the year 1997, base of operations in New Delhi. There are some organizations under the security systems are electronic eye Pvt. Ltd, Indian institute of science & technology, electronic eye systems, and Mahamahi Exims. This system creates a whole collection of high-tech security and surveillance products. These 0Systems work on the combination of system and project execution at the customers place for numerous surveillance products. This article discusses what is an electronic eye and electronic eye controlled security system project with a brief explanation.

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