Mini Project Report On Digital Visitor counter using Microcontroller ( AT89C51) A The object of this project is to make a controller based model to count. The Bidrectional Visitor Counter using Microcontroller is helpful to to Microcontroller as we are going to use this concept in this project. . AT89C51 ( based Microcontroller); Programmer; Push Button. tsofcom/bidirectional-visitor-counter/. Code To provide solution for this we are going to implement a project called “Digital Visitor Counter”. Microcontroller: This is the CPU (central processing unit) of our project.

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Thus the output of the comparator goes low, but the LED does not glow. By using this circuit and proper power supply we can implement various applications such as fans, tube lights, etc. Visitpr based GPS receiver.

Microcontroller (AT89C51) based Digital Visitor Counter Project

The input voltage to the Arduino board when it’s using an external power source as opposed to 5 volts from the USB connection or another regulated power source. It does not work through IC, before our hero, for to control a stable 12V voltage with can prevent also a short circuit. ICxx to Hold Heatsink. Microcongroller 16×2 LCD display is very basic module and is very commonly used in various devices and circuits.

CD contains following things: And when the resistance falls making available a voltage to the non-inverting input higher than inverting input, so that the output of comparator is logic high. Microcontrollers are designed for embedded applications, in contrast to the microprocessors used in personal computer or other general purpose applications consisting of various discrete chips.

A switch is connected to the load.

Many microcontrollers are so quirky that they effectively require their own non-standard dialects of C, such as SDCC for thewhich prevent using standard tools such as code libraries or static analysis tools even for code unrelated to hardware features. Such LEDs are usually made of gallium arsenide or aluminum gallium arsenide. Then through the diode for rectifier power supply to the DC Volt, And a filter circuit with Capacitors. Maximum is 32, bytes.


Each pole has contacts that can be thrown in mainly three ways.

Automatic bidirectional visitor counter using 8051 microcontroller (AT89C51)

The Uno and version 1. Some microcontrollers uses a Harvard architecture separate memory buses for instructions and data, allowing accesses to take place concurrently. If we consider an office or a conference hall or any other room, we need to turn on the lights whenever anybody enters the room.

In case cojnter is not used, it willoffer fixed resistance across the two connections.

The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. Chapter 6 explains the results and project outputs. He stood beside us in all the difficult times, and their love has helped us overcome all the failures and successes. Cost has plummeted over time, with the cheapest 8-bit microcontrollers being available for under 0. Compilers for general purpose languages will typically have some restrictions as well as enhancements to better support the unique characteristics of microcontrollers.

Hi what will happen when animals crosses the entrance of the gate where the infrared sensors are placed. Microcontrolker is useful for devices such as thermostats, which periodically test the temperature around them to see if they need to turn the air conditioner on, the heater on, etc. The majority of microcontrollers in use today cohnter embedded in other machinery, such as automobiles, telephones, appliances, and peripherals for computer systems.

It has mainly eight relay terminals. By using proper combination of contactors, the electrical circuit can be switched on and off. The board is based on the ATmega Volatile memory RAM for data storage. Bidirectional Visitor Counter Youtube video coming soon Question and answers about this project: When IR light falls on the photodiode, the resistances and these output voltages, change in proportion to the magnitude of the IR light received.

This version was made in response to a shortage in supply of the through-hole AtmegaP. The rest of the three terminals are used to connect the projecy voltage AC circuit. This switch is controlled by the coil in the control circuit. The Micro-controller does the above job. A relay is said to switch one or more poles.


These bits are sent in the form of Highs 1 and Lows 0. They are specified by their fixed value resistance. Hi Tahir, you can make payment by Paypal or by western union money transfer. For example, basic on the early microcontrollers Intelbasic and forth on the Zilog Z8as well as some modern devices. And when number of persons inside the room is zero, power supply inside the room can be cut using a relay interface.

It conuter be used to control various appliances and equipment with large current. In a basic conuter there are three contactors: Also IR rays are not affected by any other sources.

The recommended range is 7 to 12 volts. The voltage regulator IC maintains the output voltage at a constant value.

Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor disconnected by default of 50 kOhms. These types of sensors measure only infrared radiation, rather than emitting it that is called as a passive IR sensor.

An ATmega8U2 on the board channels this serial communication over USB and appears as a virtual com port to software on the computer. Chapter 7 introduces proposed future work and conclusions and then the bibliography. For the erasable variants, quartz was required, instead of less expensive glass, for its transparency to ultraviolet—glass is largely opaque to UV—but the main cost differentiator was the ceramic package itself.

Micro-controllers may not implement an external address or data bus as they integrate RAM and non-volatile memory on the same chip as the CPU. As it is a part of the load circuit, it is used to control an electrical circuit that is connected to it. Therefore, utilization of these resources for power supply is the best possible way of producing, conserving and renewing energy, which is advantageous as it is pollution free, affordable, and free from environmental impacts.