The same calculation is exhibited on a pair of the 7-segment display with the aid of a microcontroller. This system of quiz buzzer is extensively brought into play in colleges, schools, and Television shows. The players who buzz the buzzer quickly are allowed to answer the question. Sometimes it turns extremely complex to make out which team of players has buzzed the buzzer soon; this situation arises when two groups of players bang the buzzer within an exceptionally small gap of time.
In this situation, the verdict can be influenced owing to human interference. The quiz buzzer accessible here is employed to evade the above-mentioned difficulty. This quiz buzzer hinders the input given by the other buzzer as soon as the initial buzzer is banged. This quiz buzzer can be brought into play for a maximum of 8 groups of players. It is developed by making use of a microcontroller AT89C51 which is of families. The pace of the induction motor can be managed in several ways.
The stator frequency control is one of the easiest techniques to keep the pace of the Induction motor in control. The microcontroller based system for pace controlling can be employed in different domains like textile, cement, or chemical industry to run the machine as per the speed required.
Our Garden Automation project aids to conquer all these issues. In this system the microcontroller installed starts automatically approx 4. After some time the entrance gate is opened with the help of a motor driver administered by the Microcontroller. Approx 6. A buzzer is installed in the system which helps to alarm the public that the garden is about to close in a few minutes. The entrance gate is closed by the motor driver all lights are turned OFF except one, which will be glowing the entire night.
These are the number of steps occupied in the functioning of the automated garden circuit. The microcontroller is employed to administer the functions of all other devices and to control the operations.
This assignment is intended to accomplish the supplies of the industrial applications, domestic applications. This project comprises of parameters screening, parameter storing.
Here we employed a Microcontroller which is the heart of the project. This project consists of 2 modules. LCD will exhibit the parameter values. The next module is known as parameter storage. It can be employed to amass in the memory of the parameter values.
Later we can see these values by using a keypad. Master-slave communication project screens and manages the different parameters employing the RS practice. Three slave micro-controllers are connected with a Master microcontroller. As messages are transmitted to all the points in the system, this project is particularly suitable to systems where uniformity in the messages received at all the points is required.
In this situation, all points are informed of the refusal; guaranteeing the data uniformity all across the system. Though, all Points contribute to signifying whether the message sent was correct or not, thereby raising the bus reliability. Several road accidents are happening owing to alcohol drunk drivers. This alcohol detector is in the car. The main element in the project is the Alcohol sensor. If the car driver is drunk then it is sensed by the sensor. Comparator IC receives a signal from the Alcohol detector.
The output from the comparator is transferred to the micro-controller. Micro-controller the heart of this circuit gives elevated pulse to the buzzer and then the buzzer is switched ON. At a similar time relay is switched OFF. DC Motor Interfacing with Microcontroller : Here is a simple but very useful circuit in our real life named interfacing DC motor with microcontroller.
Interfacing 7 Segment Display to : This article describes you how to interface seven segments to AT89C51 microcontroller. This system displays the digits from 0 to 9 continuously with a predefined delay. The Atmega16 belongs to the AVR microcontroller family.
Intelligent Unambiguous Night Lamp Switcher : This is the circuit diagram of unambiguous night lamp switch, which turns ON our domestic lights automatically when it is dark, without human interference. It also avoids repeated frequent switching of the devices which is usually ignored in most similar circuits but may have a detrimental effect on our operating devices.
So before using your IC, you may check whether your IC is good or bad by using this circuit. High and Low Voltage Cutoff with Delay and Alarm : This high and low voltage cutoff with delay alarm circuit is an advanced automatic voltage stabilizer circuit and is used to protect our home appliances. Frequency Counter Circuit : Here we design a simple frequency counter system using two timers and two counters. While one of the Timer IC is used to produce clock signals, the other is used to produce the time limited signal of one second.
The maximum range of transmission is around 2 km. FM Bugger Circuit : Here is small circuit with which you can listen to another people conversation from long distance using the normal FM radio set.
This FM bugger circuit is kept in room where you want listen the conversation. You can listen to this conversation using the normal FM radio set. Fire Alarm with Siren Sound : This circuit alerts us when there is a fire accident at home by ringing a siren sound instead of a buzzer. Mosquito Repellent Circuit : Here is the simple electronic mosquito repellent circuit which can produce ultrasound in the frequency range of kHz, which can scare away mosquitoes. Electronic Letter Box : This is a simple circuit which helps in finding out any letter dropped in our box by stopping the LED lights attached in this circuit.
The circuit consists of timer IC as main component. It helps to control the home appliances using DTMF technology. It can be used as doorbell. With some modifications, it can be used to produce different sounds. Read this post for complete details. Digital Temperature Sensor : The main principle of this circuit is to display the digital temperature value. These are mainly used in environmental applications. Digital Stopwatch Circuit : This is a simple circuit that displays count from 0 to 59, representing a 60 second time interval.
It consists of a timer to produce the clock pulses and two counter ICs to carry out the counting operation. Here we have shown how to design these basic logic gates using one of the universal gates — NAND Gate.
We have to arrange one IR sensor for each road; these sensors always sense the traffic on that particular road. All these sensors are interfaced to the microcontroller. Based on these sensors, controller detects the traffic and controls the traffic system. So with the help of this unique circuit, we do not need to move from one place to open and close the curtain. Continuity Tester with Melody : This circuit works as a continuity tester device which tests the continuity of the wire at hand.
It is an indispensable tool to check broken wires and undesired shorting of wires. Clap Switch Circuit for Devices : This is another simple but very useful circuit which helps to ON or OFF a device without moving from you place and also helps to control the speed of the electric devices like fan, etc.
This circuit works on analog to digital conversion principle. It can be used at homes, mobile places like cars to keep a track of the temperature. Cell Phone Detector : This is a simple circuit which helps to detect the presence of an activated cell phone by detecting the signals in the frequency range of 0.
It helps in mobile phones tracking which are used for spying. Car Battery Charger Circuit : This article aims to describe the principle of operation, design and working of a simple car battery charger from AC mains supply and a feedback control section to control the battery charging.
Boolean Algebra Calculator : This Boolean algebra calculator is an interesting project which is more useful in our real life by working as a portable calculator to simplify the Boolean expression on the fly. In our circuit, we use Boolean algebra simplification methods like the Quine-McCluskey algorithm to simplify the Boolean expression and display the output on the display. This circuit can be mainly used for indication purposes.
Two identical circuits are needed, one is for left and the other is for right. The main heart of this circuit is timer.
Bidirectional Visitor Counter using : This Bidrectional Visitor Counter Circuit is helpful to count the number of persons entering or leaving a room and to display it on a screen. Battery Powered Portable Light : This circuit is more helpful in handling unexpected and undesired darkness in our homes or offices. It provides considerable amount of brightness required to do our daily tasks.
Battery Charger Circuit : This battery charger circuit works on the principle of controlling switching of an SCR based on charging and discharging of battery. Auto Turnoff Soldering Iron Circuit : This circuit helps the soldering iron to turn off automatically when it detects overheating and thereby avoids it from getting damaged. Automatic Washroom Light Switch : This is a simple but very useful circuit in our real life which helps to automatically turn On the lights when a person enters the washroom and it automatically turns Off the lights when he leaves it.
The whole circuit is based on IC CA Automatic Railway Gate Controller with High Speed Alerting System : The main aim of this project is to operate and control the unmanned railway gate in the proper manner in order to avoid the accidents in the unmanned railway crossing. Automatic Plant Irrigation System : This project circuit is more useful in watering plants automatically without any human interference.
It is more useful when the owner is not present in the home for few days. This system charges from main supply and gets activated when main supply is turned OFF. This emergency lamp will work for more than 8 hours. Automatic Door Bell With Object Detection : This automatic doorbell with object detection circuit helps to sense the presence of a person or an object automatically and rings the doorbell. Automatic Battery Charger : This charger automatically shut off the charging process when battery attains full charge.
This prevents the deep charge of the battery. If the battery voltage is below the 12V, then circuit automatically charges the battery. Auto Intensity Control of Street Lights : This is a simple circuit that automatically controls the intensity of street lights which is designed using microcontroller and LEDs.
It is mainly useful to music lovers. Air Flow Detector Circuit : This Air flow detector circuit can be used to detect the flow of air in areas like car engine. It can also be used as temperature detector. This circuit works on the principle of IR communication. This circuit can be mainly used in scoreboards. This is accomplished using a capacitor based power supply. This is a low cost and efficient circuit and can be used at homes.
Automatic solar street light controller : This projects shows controlling of the street lights automatically using solar power. A Subwoofer is a loudspeaker which produces audio signals of low frequencies. Random Number Generator using : This circuit helps to generate a random number in between 0 to when push button is pressed and it may be used in the games like monopoly, snake ladder. Delay using Timers : Generation of time delay is most important concept in embedded systems. Most of the times, we need to generate precise time delay between two actions in controller applications.
Autonomous Self-parking car : The autonomous car parking system monitors the surroundings and parks the car in the given place autoamtically using this sensor data. Ball Picker Robot : This projects explains the methods and results of a golf ball picking robot. Bidirectional Rotation of an Induction Motor with a Remote Control Device : The proposed system shows the controlling of an induction motor in forward and revesre directions using a wireless technology.
The motor runs at a speed entered by the user. Arduino is used as a main part of the project. Build A Simple Infrared Illuminator : This project designs the infrared illuminator,which is used in the cameras for image capturing during night time.
Digital Object Counter 5v : A digital object counter that count the objects is proposed here. Digital Panel Meter 5v : This project digital panel meter converts the analog values into digital and displays them. Here voltage is displayed. Discotheque Light Stroboscopic Flasher : A led strobe light used in discotheque is designed using simple components like IC here.
You may write your comments, feedback, opinions and any new projects ideas by visiting our contact us page. Get latest updates on various electronics projects and circuit diagrams by visiting this site regularly. Also check out the huge collection of electrical and electronics schematic symbols. Please give me circuit diagram of automatic room light intensity based window blind control system. Can some one help me. Can anyone help me. Please I need a design project on microcontroller based photovoltaic tester.
Someone should please me one that. Your email address will not be published. August 1, By Administrator. Related Post: Projects on Electronics You may write your comments, feedback, opinions and any new projects ideas by visiting our contact us page. List of Microcontroller based Mini Projects: 2 Digit Up Down Counter : The main principle of this circuit is to increment the values on seven segment displays by pressing the button.
This circuit can be mainly used in scoreboards. This circuit works on the principle of IR communication. Auto Intensity Control of Street Lights : This is a simple circuit that automatically controls the intensity of street lights which is designed using microcontroller and LEDs. Automatic Railway Gate Controller with High Speed Alerting System : The main aim of this project is to operate and control the unmanned railway gate in the proper manner in order to avoid the accidents in the unmanned railway crossing.
Bidirectional Visitor Counter using : This Bidrectional Visitor Counter Circuit is helpful to count the number of persons entering or leaving a room and to display it on a screen. This circuit can be mainly used for indication purposes. Boolean Algebra Calculator : This Boolean algebra calculator is an interesting project which is more useful in our real life by working as a portable calculator to simplify the Boolean expression on the fly.
In our circuit, we use Boolean algebra simplification methods like the Quine-McCluskey algorithm to simplify the Boolean expression and display the output on the display.
This circuit works on analog to digital conversion principle. It can be used at homes, mobile places like cars to keep a track of the temperature. We have to arrange one IR sensor for each road; these sensors always sense the traffic on that particular road. All these sensors are interfaced to the microcontroller. Based on these sensors, controller detects the traffic and controls the traffic system.
Digital Temperature Sensor : The main principle of this circuit is to display the digital temperature value. These are mainly used in environmental applications. Digital Voltmeter using Microcontroller : This is a simple digital voltmeter circuit designed using microcontroller. This circuit measures the input voltage from 0V to 5V. It helps to control the home appliances using DTMF technology.
The Atmega16 belongs to the AVR microcontroller family. Interfacing 7 Segment Display to : This article describes you how to interface seven segments to AT89C51 microcontroller. This system displays the digits from 0 to 9 continuously with a predefined delay. DC Motor Interfacing with Microcontroller : Here is a simple but very useful circuit in our real life named interfacing DC motor with microcontroller.
It is mainly used to measure value of a reactive element like a capacitor or an inductor. It is based on the principle of driving LEDs using the clock pulses.
Commonly, used LEDs will have voltage drop of 1. This is applied through the output pin of the microcontroller. Line Following Robotic Circuit using ATMega8 Microcontroller : This line follower robot is a basic robot that follows a specific path indicated by a line having some particular width.
Password Based Door Lock System using Microcontroller : This system demonstrates a 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 be closed.
Read this post completely to get more information. RTC is an integrated circuit which keeps track of current time. Using this remote, we can control the appliances within the range of meters. It is used for remote control applications like burglar alarm, car door alarm, calling bell, security systems, etc. Stepper Motor Interfacing with Microcontroller : The main principle of this circuit is to rotate the stepper motor step wise at a particular step angle.
The ULN IC is used to drive the stepper motor as the controller cannot provide current required by the motor. Street Lights that Glow on Detecting Vehicle Movement : This article describes about the circuit that switches the street lights on detecting vehicle movement and remains off after fixed time.
This system controls the street lights using light dependent resistor and PIR sensor. Sun Tracking Solar Panel : This article describes about circuit that rotates solar panel.
Temperature Controlled DC Fan using Microcontroller : The main principle of the circuit is to switch on the fan connected to DC motor when the temperature is greater than a threshold value. This can be used in home applications and in cpu to reduce heat. Ultrasonic Rangefinder using : This circuit explains you how to measure the distance using microcontroller. This ultrasonic range finder system measures the distance up to 2. Water Level Controller using Microcontroller : Here we are designing the circuit which is used to detect and control the water level automatically in overhead tank using microcontroller.
It is used in industries to control the liquid level automatically. Water Level Indicator : This Water Level Indicator project employs a simple mechanism which helps to detect and indicate the water level in an overhead tank or any other water container.
Delay using Timers : Generation of time delays in electronic circuits is a basic but very important requirement in both digital and logic systems. Precise time delays are important in many circuit operations. A PIC10F microcontroller is used to control the lighting.
It is a low cost and high performance microcontroller. Hence, two AA batteries will be sufficient to power the device. A microcontroller based automatic speed control of ceiling fan based on temperature is designed in this project. A temperature sensor is used for temperature measurement. Additionally, an LCD is used to display the current temperature and also the speed of the fan. A temperature sensor is used and the speed of the DC motor varies according to the temperature.
The microcontroller generates a PWM signal according to the temperature. Simple Toll Plaza : A simple microcontroller based automatic toll deduction system is designed in this project. The aim of this project is to design a real time battery monitoring system with low voltage alert system. It uses a microcontroller and has voltage measurement circuit and temperature measurement circuit integrated to it. This system can be used in UPS, hybrid vehicles, regular electric vehicles etc.
A microcontroller based burglar alarm system is designed here. PIR sensor is the main module along with some other sensors like acoustic and magnetic sensors. The communication is through RF link and an alarm system is installed at the receiving end. A camera is used as an image sensor to capture a colored object. Based on the position of the colored object, there will be corresponding movement in the robot.
An NXP microcontroller used for this project. RFID based ticketing system provides an easy way of buying tickets. An Atmel AT89S52 microcontroller is used with a display unit and a relay so that the time is displayed and the bell is triggered.
This system can be used in academic institutions and avoid manual intervention. A microcontroller, mobile phone, DTMF decoder and few relays are required. The project presented here can handle four electrical devices.
0コメント