IRJET- Hand Gesture Recognition System using Convolutional Neural NetworksIRJET Journal
The document presents a hand gesture recognition system using convolutional neural networks. The system aims to enable communication between deaf or mute individuals and those who do not understand sign language. It works by capturing an image of a hand gesture via camera, extracting features from the image, detecting the sign using a CNN model, and converting the sign to text or speech. The system can also convert text or speech to the corresponding sign. The CNN model achieves an accuracy of 95.6% for sign recognition, outperforming previous methods. A real-time prototype allows signing and two-way communication between individuals on different devices.
The main objective of our project is to provide an optimum solution to the traffic hazards and the road accidents. According to this project when a vehicle meets with an accident, immediately vibration sensor will detect the signal and sends it to ARM controller. Microcontroller sends the alert message through the GSM MODEM including the location to police control room or a rescue team. So the police can immediately trace the location through the GPS MODEM after receiving the information.
This document is a summer training report submitted by Akhil Garg to fulfill requirements for a Bachelor of Technology degree in Electronics and Communication Engineering. It discusses embedded systems and the 8051 microcontroller family. Specifically, it provides an introduction to embedded systems, compares microprocessors and microcontrollers, describes the architecture and features of the 8051 microcontroller, explains programming the 8051 in both assembly and C languages, and includes examples of programming the 8051 to control LEDs, 7-segment displays, LCDs, keypads and more. It also discusses the tools needed for 8051 programming including the Keil compiler and Flash Magic programmer.
Main project report on GSM BASED WIRELESS NOTICE BOARD Ganesh Gani
This document is the main project report submitted by four students for their Bachelor of Technology degree in Electronics and Communication Engineering. It describes the development of a GSM based wireless notice board system. The system allows users to update scrolling messages on an LED display board remotely by sending SMS text messages. It aims to provide a more flexible alternative to traditional fixed notice boards by enabling instantaneous message updates from anywhere via the mobile phone SMS service. The report includes chapters on the hardware components, software requirements, schematic diagram, program code, advantages and applications of the project.
This document summarizes Ankur Kumar Agarwal's training report submitted in partial fulfillment of the requirements for a Master of Computer Applications degree from Rajasthan Technical University, Kota. The report details Agarwal's training at HCL CDC in Gurgaon under the supervision of various faculty members. It includes certificates of completion, an acknowledgement section thanking those who supported the work, and an index outlining the contents of the report.
ACCIDENT PREVENTION AND SECURITY SYSTEM FOR AUTOMOBILESAdrija Chowdhury
This presentation is simply based on final year embedded systems based project entitled "ACCIDENT PREVENTION AND SECURITY SYSTEM FOR AUTOMOBILES". This project represents an automobile which has a security system of its own to prevent and detect accidents using GPS Module, GSM module and Alcohol sensor as well.
This document describes a website project for online voting submitted to a competition. The website allows citizens to vote online and check election results. It was created using HTML5, CSS3, JavaScript, ASP.NET and MS Access. The objectives are to provide election information, information about political parties and leaders, and enable online voting. This would help address issues with traditional voting like long times, booth capturing, and delays in counting ballots. The future potential applications mentioned are expanding it to other elections like Lok Sabha elections.
IRJET- Hand Gesture Recognition System using Convolutional Neural NetworksIRJET Journal
The document presents a hand gesture recognition system using convolutional neural networks. The system aims to enable communication between deaf or mute individuals and those who do not understand sign language. It works by capturing an image of a hand gesture via camera, extracting features from the image, detecting the sign using a CNN model, and converting the sign to text or speech. The system can also convert text or speech to the corresponding sign. The CNN model achieves an accuracy of 95.6% for sign recognition, outperforming previous methods. A real-time prototype allows signing and two-way communication between individuals on different devices.
The main objective of our project is to provide an optimum solution to the traffic hazards and the road accidents. According to this project when a vehicle meets with an accident, immediately vibration sensor will detect the signal and sends it to ARM controller. Microcontroller sends the alert message through the GSM MODEM including the location to police control room or a rescue team. So the police can immediately trace the location through the GPS MODEM after receiving the information.
This document is a summer training report submitted by Akhil Garg to fulfill requirements for a Bachelor of Technology degree in Electronics and Communication Engineering. It discusses embedded systems and the 8051 microcontroller family. Specifically, it provides an introduction to embedded systems, compares microprocessors and microcontrollers, describes the architecture and features of the 8051 microcontroller, explains programming the 8051 in both assembly and C languages, and includes examples of programming the 8051 to control LEDs, 7-segment displays, LCDs, keypads and more. It also discusses the tools needed for 8051 programming including the Keil compiler and Flash Magic programmer.
Main project report on GSM BASED WIRELESS NOTICE BOARD Ganesh Gani
This document is the main project report submitted by four students for their Bachelor of Technology degree in Electronics and Communication Engineering. It describes the development of a GSM based wireless notice board system. The system allows users to update scrolling messages on an LED display board remotely by sending SMS text messages. It aims to provide a more flexible alternative to traditional fixed notice boards by enabling instantaneous message updates from anywhere via the mobile phone SMS service. The report includes chapters on the hardware components, software requirements, schematic diagram, program code, advantages and applications of the project.
This document summarizes Ankur Kumar Agarwal's training report submitted in partial fulfillment of the requirements for a Master of Computer Applications degree from Rajasthan Technical University, Kota. The report details Agarwal's training at HCL CDC in Gurgaon under the supervision of various faculty members. It includes certificates of completion, an acknowledgement section thanking those who supported the work, and an index outlining the contents of the report.
ACCIDENT PREVENTION AND SECURITY SYSTEM FOR AUTOMOBILESAdrija Chowdhury
This presentation is simply based on final year embedded systems based project entitled "ACCIDENT PREVENTION AND SECURITY SYSTEM FOR AUTOMOBILES". This project represents an automobile which has a security system of its own to prevent and detect accidents using GPS Module, GSM module and Alcohol sensor as well.
This document describes a website project for online voting submitted to a competition. The website allows citizens to vote online and check election results. It was created using HTML5, CSS3, JavaScript, ASP.NET and MS Access. The objectives are to provide election information, information about political parties and leaders, and enable online voting. This would help address issues with traditional voting like long times, booth capturing, and delays in counting ballots. The future potential applications mentioned are expanding it to other elections like Lok Sabha elections.
Locker opening and closing system using rfid password and gsmSai Kumar
This document describes a locker opening and closing system using RFID, password, and GSM technology. The system is designed to increase security for bank lockers, secured offices, and homes. It uses an RFID reader to read a tag's ID number and send it to a microcontroller. The microcontroller then sends a password to an authenticated person's phone. That person must enter both passwords received to unlock the door. If the passwords do not match, a warning is sent and the door remains locked, providing improved security over existing manual and digital systems.
The document describes a gesture vocalizer system that uses multiple microcontrollers and sensors to facilitate communication between deaf, dumb, and blind communities and others. The system can detect gestures using a data glove with bend sensors and tilt sensors, analyze the gestures to determine their meaning, synthesize speech corresponding to the gestures, and display the gesture on an LCD screen. It is designed to translate sign language and other gestures into voice and text to help different communities communicate with each other.
Smart parking reservation system using SMSJithin Prasad
This document describes a smart parking reservation system that allows users to book parking spots via SMS. The system includes an AVR microcontroller, GSM modem, IR sensors, relay circuit, keypad, LCD, and other components. Users send an SMS to reserve a spot. The microcontroller processes the request, checks availability using IR sensors, and replies with a password and slot number. At the parking lot, the password is used at the entrance. The system aims to eliminate wasted time searching for spots and enhance security with password-protected access. It could be implemented in malls, restaurants, and other locations.
IoT Based Garbage Monitoring System pptRanjan Gupta
This document presents an IOT-based garbage monitoring system that uses ultrasonic sensors and a microcontroller to detect garbage levels in bins. The system sends this data over WiFi to a web page that graphically displays the garbage levels in each bin in real-time. When a bin reaches capacity, the system alerts municipal workers to empty it. This innovative system aims to help keep cities clean and support initiatives like Swachh Bharat Mission by optimizing garbage collection.
ppt on accident detection system based on Iotrahul ranjan
The document describes a proposed system to detect accidents on highways using an Internet of Things (IoT) approach. The system would use wireless sensor networks deployed along highways to detect accidents. Sensors would detect accidents and transmit location data via protocols like Zigbee to a gateway. The gateway would send the data to the cloud to be accessed by an Android app, allowing users to see accident locations in real-time. The document reviews related work on IoT and wireless sensor networks for smart cities and transportation. It outlines the proposed system architecture, hardware components, and communication methods to realize the accident detection system.
Project report on bidirectional visitor counter & home automationRoshan Mani
This document is a project report on a bi-directional visitor counter and home automation system built using a microcontroller. The system uses infrared sensors to detect visitors entering and leaving a room and counts the number of visitors accordingly. It also controls the room lights by turning them on when visitors enter and off when the last visitor leaves. The number of current visitors is displayed on 7-segment displays. The report describes the various circuit components used, including resistors, capacitors, an AT89S52 microcontroller, infrared LEDs and phototransistors, relays, displays and more. It provides schematics of the circuit design and explains how the microcontroller software operates the system to count visitors and control lights bi-direction
The document discusses the Eye Gaze system, which allows people with physical disabilities to control devices with their eyes. It describes how the system works by tracking a user's eye movements to select on-screen options. The document outlines who can benefit from the system, its various components and menus, applications, and future advancements like improved portability and tracking for limited eye control. It concludes that eye tracking interfaces can aid application control if used sensibly given the voluntary and involuntary nature of eye movements.
IOT based project for accident victims,where the message is directly sent to the nearby ambulance, and the traffic is maintained on the basis of the fact that whether an ambulance is present on the road or not.
This document provides a mini project report on a GSM based electronic notice board. It includes an introduction describing the purpose and benefits of the notice board, which allows sending messages to displays via SMS or GPRS. The methodology, scope of work, aims, and objectives are then outlined. Background information on GSM technology, architecture, frequencies and standards is also provided. The report concludes with a description of the system components and methodology to be used for the project.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- A Smart Glove for the Dumb and DeafIRJET Journal
1) The document describes a smart glove that can translate sign language gestures into speech to help deaf people communicate.
2) The glove uses flex sensors to detect finger movements, and an accelerometer and gyroscope to detect hand movements.
3) The sensors' data is processed by a Raspberry Pi microprocessor which analyzes the gestures and outputs text on a screen and speech through a speaker to translate the sign language into a form hearing people can understand.
Online examination system of open and distance education kuntiNawaraj Ghimire
The document presents a proposal for an online examination system for open and distance education. It discusses the need for such a system to address issues with current paper-based exams like time constraints, security, and processing delays. The proposed system would allow faculty to create, modify and store questions online and conduct randomized multiple choice exams within time limits. It would also provide automatic scoring and immediate results while reducing paperwork and errors. An 8-9 week timeline is proposed to complete planning, design, coding, testing and documentation for the new online examination system.
Iot attendance system using fingerprint module AjinkyaMore29
An Internet of Things (IoT) based portable biometric
attendance system can prove to be of great value to educational institutions in
this regard as it proves to be highly efficient and secure. The cost involved in
making this system is quite less, when compared to conventional biometric
attendance system. The use of cloud computing to store the attendance records
makes all the data easy to access and retrieve as end when required by the
teachers. The use of fingerprint scanner ensures the reliability of the attendance
record.
My Final Year Project - Individual Control Home Automation SystemMichael Olafusi
This project involves the design and construction of an individual control home
automation system using RS232, GSM technology and a microcontroller.
Home automation is the automatic or semi-automatic control and monitoring of
household appliances and residential house features like doors, gate and even the windows.
This project is a demonstration of how to design and build a multi purpose remotely
controlled system that can switch OFF and ON any electrical household appliance (including the security light), by dialling a phone already interfaced via RS232 to a microcontroller that controls a relay for the automatic switching on and off of the appliance and the phone will send a feedback short message service text indicating the new state of the appliance, whether switched ON or OFF.
The results of this project show that a microcontroller is a very powerful device for
building smart electronic devices that can automatically control electrical appliances, with little circuitry complexities and components.
This document proposes developing an online national polling system in India to address issues with the current in-person voting process. It would allow eligible citizens to vote online from anywhere by registering on the system's website. The system would use technologies like Java, MySQL database, and the Struts framework. It would have separate modules for voters and candidates, allowing voters to view candidate information, ask questions, and cast an online vote while candidates can register, update profiles, and respond to voter questions. The goals are to reduce time spent voting, enable global voting, and reduce voting errors.
This document provides an overview of an online quiz project. It describes the existing manual system and need for a new automated system. It covers the scope of work, hardware and software requirements, and technologies used such as PHP, JavaScript, Apache, and Microsoft SQL Server. The proposed system will allow online exams to be conducted, questions to be added and modified, and results to be automatically calculated and stored in a database. The objectives are to provide better information to administrators, instructors and students.
wireless electronic notice board using GSMVijeeth Anitha
This project implements a wireless electronic notice board using GSM technology. A microcontroller receives SMS messages from a mobile phone via a GSM modem. It then displays the messages on an LCD screen. The system was designed, built and tested. It provides a low-cost, flexible way to remotely display messages and could be useful for applications like advertising, education and information sharing. Potential enhancements include displaying multiple messages simultaneously and adding priority levels to messages.
This circuit allows up to 8 players to buzz in during a quiz competition. It uses an IC and passive components to identify the first player to press their button. The circuit is divided into a power supply section and a quiz buzzer section. The power supply generates 5V from mains power. The buzzer section uses an octal latch IC to transfer the button press signals to corresponding outputs. When a button is pressed, the corresponding bulb lights and a buzzer sounds to identify the player.
Locker opening and closing system using rfid password and gsmSai Kumar
This document describes a locker opening and closing system using RFID, password, and GSM technology. The system is designed to increase security for bank lockers, secured offices, and homes. It uses an RFID reader to read a tag's ID number and send it to a microcontroller. The microcontroller then sends a password to an authenticated person's phone. That person must enter both passwords received to unlock the door. If the passwords do not match, a warning is sent and the door remains locked, providing improved security over existing manual and digital systems.
The document describes a gesture vocalizer system that uses multiple microcontrollers and sensors to facilitate communication between deaf, dumb, and blind communities and others. The system can detect gestures using a data glove with bend sensors and tilt sensors, analyze the gestures to determine their meaning, synthesize speech corresponding to the gestures, and display the gesture on an LCD screen. It is designed to translate sign language and other gestures into voice and text to help different communities communicate with each other.
Smart parking reservation system using SMSJithin Prasad
This document describes a smart parking reservation system that allows users to book parking spots via SMS. The system includes an AVR microcontroller, GSM modem, IR sensors, relay circuit, keypad, LCD, and other components. Users send an SMS to reserve a spot. The microcontroller processes the request, checks availability using IR sensors, and replies with a password and slot number. At the parking lot, the password is used at the entrance. The system aims to eliminate wasted time searching for spots and enhance security with password-protected access. It could be implemented in malls, restaurants, and other locations.
IoT Based Garbage Monitoring System pptRanjan Gupta
This document presents an IOT-based garbage monitoring system that uses ultrasonic sensors and a microcontroller to detect garbage levels in bins. The system sends this data over WiFi to a web page that graphically displays the garbage levels in each bin in real-time. When a bin reaches capacity, the system alerts municipal workers to empty it. This innovative system aims to help keep cities clean and support initiatives like Swachh Bharat Mission by optimizing garbage collection.
ppt on accident detection system based on Iotrahul ranjan
The document describes a proposed system to detect accidents on highways using an Internet of Things (IoT) approach. The system would use wireless sensor networks deployed along highways to detect accidents. Sensors would detect accidents and transmit location data via protocols like Zigbee to a gateway. The gateway would send the data to the cloud to be accessed by an Android app, allowing users to see accident locations in real-time. The document reviews related work on IoT and wireless sensor networks for smart cities and transportation. It outlines the proposed system architecture, hardware components, and communication methods to realize the accident detection system.
Project report on bidirectional visitor counter & home automationRoshan Mani
This document is a project report on a bi-directional visitor counter and home automation system built using a microcontroller. The system uses infrared sensors to detect visitors entering and leaving a room and counts the number of visitors accordingly. It also controls the room lights by turning them on when visitors enter and off when the last visitor leaves. The number of current visitors is displayed on 7-segment displays. The report describes the various circuit components used, including resistors, capacitors, an AT89S52 microcontroller, infrared LEDs and phototransistors, relays, displays and more. It provides schematics of the circuit design and explains how the microcontroller software operates the system to count visitors and control lights bi-direction
The document discusses the Eye Gaze system, which allows people with physical disabilities to control devices with their eyes. It describes how the system works by tracking a user's eye movements to select on-screen options. The document outlines who can benefit from the system, its various components and menus, applications, and future advancements like improved portability and tracking for limited eye control. It concludes that eye tracking interfaces can aid application control if used sensibly given the voluntary and involuntary nature of eye movements.
IOT based project for accident victims,where the message is directly sent to the nearby ambulance, and the traffic is maintained on the basis of the fact that whether an ambulance is present on the road or not.
This document provides a mini project report on a GSM based electronic notice board. It includes an introduction describing the purpose and benefits of the notice board, which allows sending messages to displays via SMS or GPRS. The methodology, scope of work, aims, and objectives are then outlined. Background information on GSM technology, architecture, frequencies and standards is also provided. The report concludes with a description of the system components and methodology to be used for the project.
IJRET : International Journal of Research in Engineering and Technology is an international peer reviewed, online journal published by eSAT Publishing House for the enhancement of research in various disciplines of Engineering and Technology. The aim and scope of the journal is to provide an academic medium and an important reference for the advancement and dissemination of research results that support high-level learning, teaching and research in the fields of Engineering and Technology. We bring together Scientists, Academician, Field Engineers, Scholars and Students of related fields of Engineering and Technology.
IRJET- A Smart Glove for the Dumb and DeafIRJET Journal
1) The document describes a smart glove that can translate sign language gestures into speech to help deaf people communicate.
2) The glove uses flex sensors to detect finger movements, and an accelerometer and gyroscope to detect hand movements.
3) The sensors' data is processed by a Raspberry Pi microprocessor which analyzes the gestures and outputs text on a screen and speech through a speaker to translate the sign language into a form hearing people can understand.
Online examination system of open and distance education kuntiNawaraj Ghimire
The document presents a proposal for an online examination system for open and distance education. It discusses the need for such a system to address issues with current paper-based exams like time constraints, security, and processing delays. The proposed system would allow faculty to create, modify and store questions online and conduct randomized multiple choice exams within time limits. It would also provide automatic scoring and immediate results while reducing paperwork and errors. An 8-9 week timeline is proposed to complete planning, design, coding, testing and documentation for the new online examination system.
Iot attendance system using fingerprint module AjinkyaMore29
An Internet of Things (IoT) based portable biometric
attendance system can prove to be of great value to educational institutions in
this regard as it proves to be highly efficient and secure. The cost involved in
making this system is quite less, when compared to conventional biometric
attendance system. The use of cloud computing to store the attendance records
makes all the data easy to access and retrieve as end when required by the
teachers. The use of fingerprint scanner ensures the reliability of the attendance
record.
My Final Year Project - Individual Control Home Automation SystemMichael Olafusi
This project involves the design and construction of an individual control home
automation system using RS232, GSM technology and a microcontroller.
Home automation is the automatic or semi-automatic control and monitoring of
household appliances and residential house features like doors, gate and even the windows.
This project is a demonstration of how to design and build a multi purpose remotely
controlled system that can switch OFF and ON any electrical household appliance (including the security light), by dialling a phone already interfaced via RS232 to a microcontroller that controls a relay for the automatic switching on and off of the appliance and the phone will send a feedback short message service text indicating the new state of the appliance, whether switched ON or OFF.
The results of this project show that a microcontroller is a very powerful device for
building smart electronic devices that can automatically control electrical appliances, with little circuitry complexities and components.
This document proposes developing an online national polling system in India to address issues with the current in-person voting process. It would allow eligible citizens to vote online from anywhere by registering on the system's website. The system would use technologies like Java, MySQL database, and the Struts framework. It would have separate modules for voters and candidates, allowing voters to view candidate information, ask questions, and cast an online vote while candidates can register, update profiles, and respond to voter questions. The goals are to reduce time spent voting, enable global voting, and reduce voting errors.
This document provides an overview of an online quiz project. It describes the existing manual system and need for a new automated system. It covers the scope of work, hardware and software requirements, and technologies used such as PHP, JavaScript, Apache, and Microsoft SQL Server. The proposed system will allow online exams to be conducted, questions to be added and modified, and results to be automatically calculated and stored in a database. The objectives are to provide better information to administrators, instructors and students.
wireless electronic notice board using GSMVijeeth Anitha
This project implements a wireless electronic notice board using GSM technology. A microcontroller receives SMS messages from a mobile phone via a GSM modem. It then displays the messages on an LCD screen. The system was designed, built and tested. It provides a low-cost, flexible way to remotely display messages and could be useful for applications like advertising, education and information sharing. Potential enhancements include displaying multiple messages simultaneously and adding priority levels to messages.
This circuit allows up to 8 players to buzz in during a quiz competition. It uses an IC and passive components to identify the first player to press their button. The circuit is divided into a power supply section and a quiz buzzer section. The power supply generates 5V from mains power. The buzzer section uses an octal latch IC to transfer the button press signals to corresponding outputs. When a button is pressed, the corresponding bulb lights and a buzzer sounds to identify the player.
This circuit uses a D-type flip-flop as a priority encoder to determine which of eight switches is pressed first, lighting the corresponding LED and sounding a buzzer. When multiple switches are pressed simultaneously, it registers the first. The design could be expanded to indicate the order of multiple simultaneous button presses using a display. It requires common electronic components like resistors, capacitors, transistors, an LED array, buttons, and a buzzer.
The document describes a quiz competition with 6 multiple choice questions about companies and their founders. It provides details on the scoring format, with +20 for a correct answer and -10 for a wrong answer. Each question is only asked once and there is a penalty for buzzing in but not answering. The questions cover companies like Red Hat, Tata Docomo, Kochi IPL team, Lamborghini, Adidas and Puma, and identifies the employer with the second most employees as Indian Railways.
This program creates a quiz buzzer using a seven segment display and buzzer. It defines arrays to store the digit values for the display and sets pins for the output, stop, and buzzer. The buzzer() function monitors the input switches and calls the display() function to show the digit and sound the buzzer when a switch is pressed, then waits for the stop pin to reset. The main() function initializes the pins and calls buzzer() to start the program.
This circuit is used in quiz shows to determine which of four contestants pressed a button first to indicate a fast reaction time. When a contestant presses their switch, a latch integrated circuit locks out the other contestants and a priority encoder converts the input to a binary coded decimal number that is displayed. An audio alarm also sounds to indicate a button press. The alarm and display are disabled by a reset button once the first contestant is identified.
This study aimed to non-invasively detect electromyography (EMG) activity of deep thumb muscles using surface electrodes. Researchers placed electrodes on the forearms of 15 participants and recorded EMG signals while participants performed thumb movements. Independent component analysis was used to separate EMG signals from superficial and deep muscles. Predicted EMG waveforms for each deep muscle were correlated with independent components, and the highest correlated component was considered to represent that muscle's activity. Overall high correlations were found between predicted and recorded waveforms. Accuracy, sensitivity and specificity measures between predicted and recorded waveforms were also statistically significant when using a threshold activation level, demonstrating the first non-invasive detection of EMG activity from deep thumb muscles.
Some questions compiled from the finals of the LitSoc Buzzer Quiz 2014-15 at IIT Madras, conducted on the 22nd of September 2014 by Shankar Narayanan, Nithin Ramesan and Vishal Katariya
Here is the Buzzer Quiz from Saarang 2015, IITM's cultural fest, set by Vishal Katariya, Shankar Narayanan and Nithin Ramesan. We hope you enjoy going through it!
This document proposes using RFID technology to detect traffic levels before busy signals and divert traffic. It involves using an RFID reader module and tags to detect vehicle levels 500m before signals. This information would be sent to a microcontroller and displayed on vehicle LCDs to advise alternate routes in real-time. The system aims to reduce traffic and prevent vehicles from being stuck at busy signals. It discusses the hardware and software requirements including an ARM7 microcontroller, RFID modules, sensors and Embedded C programming. The technology has applications in traffic management and is presented as a low-cost intelligent transport solution.
Presentation bipolar stepper motor driver circuitSarah Krystelle
This document describes a bipolar stepper motor driver circuit. The circuit uses three ICs - an LM555 timer, a 74LS194 shift register, and an L293D H-bridge motor driver. The LM555 produces clock pulses that shift the output of the 74LS194 either up or down, determining the direction of motor rotation. The 74LS194 outputs are fed to the L293D to drive the stepper motor windings forward or reverse based on the input. A potentiometer controls the motor speed and a switch selects the direction.
This document summarizes a student's presentation on crystal oscillators. It begins with an introduction explaining that a crystal oscillator uses a piezoelectric crystal to create a precise electrical signal. It then discusses the crystal structure and materials used, primarily quartz, as well as the basic harmonic oscillator structure and equivalent circuit of a crystal oscillator. Applications mentioned include use in electronics for timekeeping, communications, and industrial/consumer devices.
Arm cortex (lpc 2148) based motor speedUday Wankar
The project is designed to control the speed of a DC and AC motor using an
ARM7 LPC2148 processor. The speed of motor is directly proportional to the voltage
applied across its terminals. Hence, if voltage across motor terminal is varied, then
speed can also be varied. This project uses the above principle to control the speed of
the motor by varying the duty cycle of the pulses applied to it, popularly known as
PWM control. The project uses input button interfaced to the processor, which are
used to control the speed of motor. Pulse Width Modulation is generated at the output
by the microcontroller as per the program. The program is written in Embedded C.
The average voltage given or the average current flowing through the motor
will change depending on the duty cycle, ON and OFF time of the pulses, so the speed
of the motor will change. A motor driver IC is interfaced to the ARM7 LPC2148
processor board for receiving PWM signals and delivering desired output for speed
control. Further the project can be enhanced by using power electronic devices such
as IGBTs to achieve speed control higher capacity industrial motors.
This document describes a wireless traffic light priority control system for emergency vehicles. The system has a transmitter section in emergency vehicles that sends signals to a receiver section connected to traffic lights. The transmitter section consists of switches to select light directions, an encoder to convert switch signals to radio waves, and an RF transmitter. The receiver section has an RF receiver to get signals, a decoder to convert them to microcontroller input, an AT89S52 microcontroller to control lights, and LED indicators representing traffic lights. The system is intended to prioritize green lights for emergency vehicles to reduce traffic delays.
This document describes the design and working of a low-cost metal detector circuit. It uses a Colpitts oscillator circuit with resistors, capacitors, transistors, diodes, an LED, coil, buzzer and battery. When the coil is brought near a metal object, it absorbs magnetic energy and causes the oscillator frequency to change. This triggers the final transistor to conduct, activating the buzzer and LED to indicate metal detection. The metal detector can be used to detect metallic objects for applications like food safety inspection and security systems.
1. This book is a compilation of 26 microcontroller-based projects that were featured in Electronics For You magazine between 2001-2009.
2. The book includes projects based on various 8-bit microcontrollers like AT89C51, AT89C2051, AT89C52, AT89S8252, Atmega16, Atmega8535, PIC16F84, and provides details on hardware, software, and PCB layout.
3. A CD accompanying the book contains datasheets, source codes, tutorials, and other files for the projects to help readers implement the projects easily. The book is intended to introduce readers to practical microcontroller-based projects.
Metal detectors operate using electromagnetic induction by transmitting a magnetic field and analyzing changes induced in metal objects. The document describes the principle of operation, including how eddy currents are induced in metals, opposing the magnetic field. It provides a circuit diagram and discusses the beat-frequency oscillator design. Metal detectors have applications in security screening, construction, civil engineering, landmine detection, and archaeology. They are compact, simple to use, and can detect small metal targets.
This document describes a vehicle accident prevention system with an embedded alcohol detector. The system is designed to avoid accidents caused by drunk driving. It includes an alcohol sensor connected to a microcontroller that will detect if the driver has been drinking. If alcohol is detected, the vehicle will not start and a message will be sent by GSM to authorized individuals. The system aims to provide a more effective way to prevent drunk driving compared to existing external devices. It functions as an internal system connected to the vehicle's ignition to automatically check the driver for alcohol consumption before allowing the vehicle to start.
Temple of Asclepius in Thrace. Excavation resultsKrassimira Luka
The temple and the sanctuary around were dedicated to Asklepios Zmidrenus. This name has been known since 1875 when an inscription dedicated to him was discovered in Rome. The inscription is dated in 227 AD and was left by soldiers originating from the city of Philippopolis (modern Plovdiv).
Gender and Mental Health - Counselling and Family Therapy Applications and In...PsychoTech Services
A proprietary approach developed by bringing together the best of learning theories from Psychology, design principles from the world of visualization, and pedagogical methods from over a decade of training experience, that enables you to: Learn better, faster!
How to Setup Default Value for a Field in Odoo 17Celine George
In Odoo, we can set a default value for a field during the creation of a record for a model. We have many methods in odoo for setting a default value to the field.
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إضغ بين إيديكم من أقوى الملازم التي صممتها
ملزمة تشريح الجهاز الهيكلي (نظري 3)
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تتميز هذهِ الملزمة بعِدة مُميزات :
1- مُترجمة ترجمة تُناسب جميع المستويات
2- تحتوي على 78 رسم توضيحي لكل كلمة موجودة بالملزمة (لكل كلمة !!!!)
#فهم_ماكو_درخ
3- دقة الكتابة والصور عالية جداً جداً جداً
4- هُنالك بعض المعلومات تم توضيحها بشكل تفصيلي جداً (تُعتبر لدى الطالب أو الطالبة بإنها معلومات مُبهمة ومع ذلك تم توضيح هذهِ المعلومات المُبهمة بشكل تفصيلي جداً
5- الملزمة تشرح نفسها ب نفسها بس تكلك تعال اقراني
6- تحتوي الملزمة في اول سلايد على خارطة تتضمن جميع تفرُعات معلومات الجهاز الهيكلي المذكورة في هذهِ الملزمة
واخيراً هذهِ الملزمة حلالٌ عليكم وإتمنى منكم إن تدعولي بالخير والصحة والعافية فقط
كل التوفيق زملائي وزميلاتي ، زميلكم محمد الذهبي 💊💊
🔥🔥🔥🔥🔥🔥🔥🔥🔥
Elevate Your Nonprofit's Online Presence_ A Guide to Effective SEO Strategies...TechSoup
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BÀI TẬP BỔ TRỢ TIẾNG ANH LỚP 8 - CẢ NĂM - FRIENDS PLUS - NĂM HỌC 2023-2024 (B...
Quizz buzzer
1. REFERENCES
[1] DIVYA S, "QUIZ BUZZER," SRI RAMANUJAR ENGINEERING COLLEGE, CHENNAI, 2013.
8 CANDITATE QUIZZ BUZZERS
ABSTRACT:
The quiz buzzer systems are widely used in school, colleges and
TV programs. The team which presses the buzzer earliest is entitled to
give the answer. At times it becomes very difficult to identify which
team has pressed the button when two teams press the buzzer within a
very small time gap. In such cases the decision can be biased due to
human intervention. The quiz buzzer presented here takes care of the
aforesaid problem. This quiz buzzer disables the other inputs as soon
as the first buzzer is pressed. This quiz buzzer can be used for a
maximum of eight teams. It is build around pic (PERIPHERAL
INTERFACE CONTROLLER) microcontroller.
In the buzzer round of quiz contests, the question is thrown
open to all the teams. The person who knows the answer hits the
buzzer first and then answers the question. Sometimes two or more
players hit the buzzer almost simultaneously and it is very difficult to
detect which of them has pressed the buzzer first. In television shows,
where the whole event is recorded, the actions are replayed in slow
motion to detect the first hit. Such slow motions are possible only
where huge funds are available to conduct the show.
For this reason buzzer rounds are avoided for quiz contests held in
colleges.
2. This project is an electronic quiz buzzer that is affordable by the
colleges and even individuals. This project is useful for an 8-team
quiz contest, although it can be modified for more number of teams.
This system is sensitive. The circuit can detect and record the first hit
contestant among all the contestants that may appear to be
simultaneous.
This project not only monitors the fastest finger, but also evaluates
the performance of the contestants by saving marks of all participants
in microcontroller registers as per Quiz Masters guidance.
WORKING:
This project uses PIC 16F877A microcontroller. Quiz master
can justify the answer by incrementing / decrementing the marks of
particular team. Finally the quiz master can close the contest and he
can display the marks obtain by individual teams and winner details.
Once the hit of a team is registered, all the buttons are automatically
disabled. Even if any contestant tries to press the answer switch, the
system will not respond. A buzzer is provided for audio indication of
the switch bounce. Whenever a switch is bounced for answering, the
system acknowledges the fastest bounced switch by a short beep
sound. This buzzer possesses the timing about 1.30 sec (1500 ms).
This project uses regulated 9V battery. The stretch is connected
on port B, and the LED is connected to the port D. To check first
buzzer bounces while condition is used.