Digital Visitor Counter (AT89C2051)

Digital visitor counter is a reliable circuit that takes over the task of counting Number of Persons/ Visitors in the Room very Accurately. When somebody enters into the Room then the Counter is Incremented by one and when any one leaves the room then the Counter is Decremented by One. The total number of Persons inside the Room is displayed on the seven segment displays.
The microcontroller do the above job it receives the signals from the sensors, and this signals operated under the control of software which is stored in ROM.

Fire Fighting Robot (AT89S52)

The need for a device that can detect and extinguish a fire on its own is long past due. Many house fires originate when someone is either sleeping or not home. With the invention of such a device, people and property can be saved at a much higher rate with relatively minimal damage caused by the fire. Our task as electrical engineers was to design and build a prototype system that could autonomously detect and extinguish a fire. Also aims at minimizing air pollution.In this Project we design a Fuzzy based Microcontroller controlled Robot. It is the Robot that can move through a model structure,  then extinguish it with help of a Blower. This is meant to simulate the real world operation of a Robot performing a fire extinguishing function in an oilfield. Fuzzy logic provided an appropriate solution to the otherwise complex task of mathematically deriving an exact model for the non-linear control system upon which conventional control techniques could then be applied. The fuzzy inference system was designed to act as a PID-like controller. We are using the Popular 8 bit Microcontroller the 8051 family Microcontroller. Program code to control the fire fighting robot is written in assembly language.

FingerPrint Based Security System

Personal Safes are revolutionary locking storage cases that open with just the touch of your finger. These products are designed as secure storage for medications, jewelry, weapons, documents, and other valuable or potentially harmful items.These utilize fingerprint recognition technology to allow access to only those whose fingerprints you choose. It contains all the necessary electronics to allow you to store, delete, and verify fingerprints with just the touch of a button. Stored fingerprints are retained even in the event of complete power failure or battery drain.These eliminates the need for keeping track of keys or remembering a combination password, or PIN. It can only be opened when an authorized user is present, since there are no keys or combinations to be copied or stolen, or locks that can be picked.

In this project the fingerprint module from Miaxis Biometrics is used. It can store up to 750 finger prints on its own memory. It can be controlled through its serial port.

The microcontroller AT89S52 interact with the module. You can Add a fingerprint, Delete a fingerprint and Identify the fingerprint.

To add a fingerprint, just show the finger on the module and press the ADD key. Now the microcontroller will send the ADD command to the module and the module will add it into the memory.
To delete the finger follow the same as above.

To identify the finger, press the Identify button and if the finger matches then the Relay is complemented.Also the fingerprint ID is displayed over the LCD display.

For more details about the Fingerprint module, please check the datasheet and you can get it from the datasheets page.

Automatic Room light Controller with Visitor Counter (AT89S52)

This Project Automatic Room Light Controller with Visitor Counter using Microcontroller is a reliable circuit that takes over the task of controlling the room lights as well us counting number of persons/ visitors in the room very accurately. When somebody enters into the room then the counter is incremented by one and the light in the room will be switched ON and when any one leaves the room then the counter is decremented by one. The light will be only switched OFF until all the persons in the room go out. The total number of persons inside the room is also displayed on the seven segment displays.
The microcontroller does the above job. It receives the signals from the sensors, and this signal is operated under the control of software which is stored in ROM. Microcontroller AT89S52 continuously monitor the Infrared Receivers, When any object pass through the IR Receiver's then the IR Rays falling on the receiver's are obstructed , this obstruction is sensed by the Microcontroller

BIOMEDICAL MONITORING SYSTEM (AT89C2051 + TX/RX)

In spite of the improvement of communication link and despite all progress in advanced communication technologies, there are still very few functioning commercial wireless monitoring systems, which are most off-line, and there are still a number of issues to deal with.

Therefore, there is a strong need for investigating the possibility of design and implementation of an interactive real-time wireless communication system. In our project, a generic real-time wireless communication system was designed and developed for short and long term remote patient-monitoring applying wireless protocol. The primary function of this system is to monitor the temperature and Heart Beat of the Patient and the Data collected by the sensors are sent to the Microcontroller. The Microcontroller transmits the data over the air.

At the receiving end a receiver is used to receive the data and it is decoded and fed to Microcontroller, which is then displayed over the LCD display. If there is a dangerous change in patient's status an alarm is also sounded.

Device control through Bluetooth from Symbian OS Mobiles

Use your Symbian OS mobiles to control devices through Bluetooth. 

An serial to Bluetooth converter is used in this project. 

The Microcontroller At89C2051 is used to receive the data from the mobile through bluetooth.
Most of the Nokia smartphones can be used in this project.
 Here's the another design which uses AUBTM-22 serial to Bluetooth module.

The only difference from the sparkfun module circuit is, this module works on 3.3v so the microcontroller is also operated by the 3.3v power supply.

The module have a default baud rate of 9600, so you have to change the program, since the Sparkfun module works on 19200 baud rate.

The pairing code for this module is 8888

DS1620 Based Temperature Controller (AT89S52)

This Project is used to indicate the temperature and it is also used as controller. The system will get the temperature from the IC and it will display the temperature over the seven segment display and this temperature was compared with the value stored by the user and if the Room temperature goes beyond the Preset temperature then an alarm is switched ON until the stop switch is pressed.
The System is fully controlled by the microcontroller AT89s52. It is a popular 8 bit microcontroller. The circuit consists of four switches, in which two buttons are used to increment and decrement the temperature value and the next button is to start the Thermostat function and the other button is used to stop the thermostat function.
All the above functions are monitored and controlled by the 8 bit microcontroller AT89s52.

Interactive Voice Response System For College Automation (IVRS)

Now-a-days every institution needs automation. As a part of college automation, we have decided to do a project Voice Interactive System for College Automation. Our project allows the user to know the student's attendance and marks quickly through the telephone line without the intention of the college authority. In the hardware side embedded system has been used. A 20 pin microcontroller 89C2051 is used because of its compatibility with our hardware. This microcontroller controls the whole hardware. Telephone line is used for communication purpose. Visual Basic has been used for software programming. Presentation in the class and outcome of the university are made reachable to the parents by our project. It will be very obliging to the parents to be acquainted with their son's/daughter's recital in the college. 

GSM based Automatic Meter Reading (AMR)

GSM based Automatic meter reading, or AMR, is the technology of automatically collecting data from energy meter and transferring that data to a central database for billing and/or analyzing. The Transmitter is connected to the meter and it counts the pulses from it and displays it over the LCD display. It also transmit the data over RF to the PC. At the receiver end the data is received by an receiver module and the PC application will display it over the PC.
An GSM modem is also connected to the kit so that anybody can call to the number and get back the Meter readings as SMS. The meter reading can be obtained at zero cost. Since the microcontroller will get the mobile number and disconnect the call so the user wont get any charge for the call. Later the microcontroller will send back the meter readings to the called number as SMS.

PC Receiver Circuit Diagram

PC Screenshot

 Main Circuit Diagram

Operating procedure

1. Switch on the kit
2. Wait until you see the Meter readings on the display
3. Give a call to the number
4. You will get the meter readings as SMS

Temperature and Humidity Controller for Infant Incubator

Infant incubator provides a controlled environment for newborns needing special care, such as those born prematurely. By placing an infant in an incubator,doctors and nurses can set and monitor different aspects of the child’s environment in order to create ideal conditions for survival and moreover it protect infants from pollutants and infection. Infant incubators and other advances in medical technology have made it possible for small or premature babies to survive.
The microcontroller AT89S52 based system keeps on monitoring the temperature of the baby and the chamber to a predetermined values, also the humidity is kept under control.

Block Diagram

About Humidity sensor

The humidity sensor used in this project is SY-HS-220, it provides analog dc output as per the humidity.
The following table provide the humidity with respect to out dc voltage.

The output of the Humidity sensor is fed to a ADC0804.

Temperature sensor

DS1820 is used here to measure the temperature. its a 1wire temperature sensor. It have inbuilt ADC. 

Circuit Diagram

Operation:

There are 3 switches (Mode, Increment, Decrement). The system continuously displays the Humidity, body temperature, water Chamber temperature on the lcd display. 

If the incubator goes hot above the predefined value then the fan is switched ON.
If the incubator temperature goes very cold then the Bulb is switched ON.
If the humidity is increased then the Water heater is switched ON until the temperature reaches the desired value.

All the values can changed at any time and they are stored in the EEPROM chip. 

EMBEDDED SYSTEM WITH ROBOTICS

Welcome to Robotics and Embedded World:

Exclusive Training Institute is a student assistant providing Technological Institute offering its services in the field of Hand-on Pratical training on emerging technologies, Development Tools and Components for Self project development and Assistance in Minor and Major project development to Engineering Students.

How to Make a Robot – Lesson 1: Getting Started:

Getting Started

Welcome to the first installment of the Grand RobotShop Tutorial, a series of 10 lessons that will teach you how to make your own robot. This tutorial is aimed at anybody willing to get started in robotics and have a basic understanding of terms such as “voltage”, “current”, “motor”, and “sensors”. Although this might seem pretty basic, even people with previous robot building experience might find useful information regarding the general method of building a robot.

What is a robot?

There are many definitions of robot and no real consensus has been attained so far. We loosely define a robot as follows:

Robot: An electromechanical device which is capable of reacting in some way to its environment, and take autonomous decisions or actions in order to achieve a specific task.

This means that a toaster, a lamp, or a car  would not be considered as robots since they have no way of perceiving their environment. On the other hand, a vacuum cleaner that can navigate around a room, or a solar panel that seeks the sun, can be considered as a robotic system.

It is also important to note that the  “robots” featured in Robot Wars for instance or any solely remote controlled device would not fall under this definition and would be closer to a more complex remote controlled car.

Although this definition is quite general, it might need to evolve in the future in order to keep up with the latest advancement in the field. In order to get a sens of how robotics is rapidly growing, we suggest you take a look at the RobotShop History of Robotics.