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Android Controlled Electronic Notice Board System

July 12, 2016 by Tarun Agarwal Leave a Comment

Remotely Controlled Android based Electronic Notice Board

Remotely Controlled Android based Electronic Notice Board

The Electronic notice board plays an essential role in public areas like shopping malls, educational institutions, offices, etc. The events, occasions or any other information, which has to be accepted to the students, will be displayed on the notice boards.In the proposed system, a person announces the news and he has to keep posted the news on all the notice boards in the public areas. Mostly, this will be seen during the examination time. A time table of the exams has to be given to the students by writing the information on the boards. But the entire process takes a lot of time to update the information on the board. To overcome this problem, this wireless electronic notice board has been developed which totally eliminates the manual operation.

Android Controlled Electronic Notice Board System

This project uses most demanding technologies like embedded systems and android.

Android Operating System

Android is a Linux based OS (operating system) and it is designed mainly for touch screen based gadgets like mobile phones, tablets, etc. This android operating system have developed in the past fifteen years initial from black & white phones to current smart phones. Android is One of the most extensively used mobile operating system. This software was founded in Palo Alto in California in the year 2003.

Android Operating System

Android Operating System

The android is a powerful operating system and it supports various applications in Smart phones. The applications of this OS are more advanced and comfortable for the users. The hardware part supports Android software, that is based on ARM architecture. It is an open source OS means that anyone can use it and it supports millions of apps available. This OS is available at low cost in the market due to this reason android is very popular.

Remotely Controlled Android based Electronic Notice Board

The Electronic Notice Board is the primary thing in most of the public places like institutions, organization, public utility places like bus stations, railway stations, airports and parks. But sticking various notices day-to-day is a difficult process. A separate person is required to take care of this notices display. This project deals with an advanced wireless notice board.

The main goal of this project is to develop a wireless electronic notice board that shows information when a notice is sent from the android device of the user. Operation of the remote can be attained by any android application, upon a Graphical User Interface based touch screen function.

The required hardware and software components are Micro controller unit (AT89C52), BLUETOOTH Device, LCD (16×2), Resistors, Capacitors, Diodes, Transformer, Regulator, Kiel compiler, Language: Embedded C Or Hex Assembly and Android Application

Remotely Controlled Android based Electronic Notice Board Block Diagram by Edgefxkits.com

Remotely Controlled Android based Electronic Notice Board Block Diagram by Edgefxkits.com

While the operator sends the information from the android OS based device, it is received and recovered by the Bluetooth device in the display unit. The password accessed by the Bluetooth device will only be known to the user. Then, it is sent to the microcontroller that further exhibits the notice sent from the mobile user on to the notice board which is inbuilt with an LCD display. It includes a 8051 family microcontroller.

The power supply unit comprises of a step down transformer, bridge rectifier, voltage regulator. Where a step down transformer step downs the 230v to 12V AC. This voltage is converted to DC using a bridge rectifier.A capacitive filter removes the ripples and then regulates the voltage to 5V using a voltage regulator. The final voltage is required for the desired operation of the microcontroller and other apparatus.

Remotely Controlled Android based Electronic Notice Board Project Kit by Edgefxkits.com

Remotely Controlled Android based Electronic Notice Board Project Kit by Edgefxkits.com

The proposed system overcomes the problem by initiating a wireless electronic notice board which is interfaced to an android application based device through the Bluetooth device. This device receives the information from the android device that is sent to a 8051 microcontroller family. This microcontroller displays the information on an LCD screen. The applications of this project can be used in public places like airports, colleges, railway stations, offices, or airports for displaying any announcement.

Advantages and Applications

The advantages and applications of this project mainly include the following

  • No need of any difficult wires to display the information on the LCD as it is wireless.
  • Easy to operate and Consumes less power. This circuit is handy.
  • It is used to display the information wirelessly in public areas like bus stations, parks, railway stations, colleges and organizations etc.

Therefore, this is all about android controlled electronic notice board system. Finally from the given information we can conclude that, by introducing this wireless technology, we can make our communication more proficient and faster, with better effectiveness we can exhibit the information with less errors & maintenance.We hope that you have got a better understanding of this concept. Furthermore, any queries regarding this concept or electrical and electronics projects, please give your valuable suggestions by commenting in the comment section below. Here is a question for you What is an electronic notice board?

All Electronics Waveform Generators with Applications

May 20, 2016 by Tarun Agarwal Leave a Comment

Electronics Waveform Generators

Electronics Waveform Generators

An electronic instrument that generates repeating and non-repeating voltage waveforms is a Signal generator. Generally an ideal signal generator is molded as a voltage source. Signal generator can also be called as functional generators, microwave generator, pitch generator, RF, arbitrary waveform generator. This electronic device generates an electronic signal which can be either analog or digital. Signal generator will delivers an accurate calibrated signal at frequencies from audio to the microwave range. This is used mainly in the developing and testing of electronic hardware. These signals can be adjusted according to frequency, designing, testing, repairing, troubleshooting, modulation, output, waveform and impedance.

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Water Softener System Circuit Explanation

April 27, 2016 by Tarun Agarwal Leave a Comment

Water Softener System Circuit

Water Softener System Circuit

Hard water comes from different resources, that may include dissolved minerals like sodium, calcium and magnesium, etc. Hard water causes many problems due to the presence of these minerals. Hard water becomes unfriendly for domestic applications in our home such as bathing, washing clothes, etc. There are several methods which have been found to be effective for converting from hard water to soft water, such as applying reverse osmosis, distillation and using chemicals like sodium, caustic soda, etc.

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Non-Inverting Operational Amplifier – Non Inverting Op-Amp

December 14, 2015 by Tarun Agarwal 16 Comments

Inverting and Non-inverting Amplifier

Inverting and Non-inverting Amplifier

The term op-amp or operational amplifier is a one sort of  integrated circuits. In 1963, the first operational amplifier is invented by Fairchild Semiconductors. Op-Amp is the basic building block of analog circuits that completes a various kinds of analog signal processing tasks.The function of the op-amp can be controlled by using an external feedback and these ICs are used as a versatile device in several electronic instruments. Op-Amp comprises of two i/ps and two o/ps such as  inverting amplifier and non inverting amplifier. The applications of this IC mainly involve in various electrical and electronic kits, filters, oscillators, pulse generators, comparators, etc. The main function of the op-amp is to increase the ability of AC and DC signals and also used for mathematical operations. [Read more…]

Simple Two Transistors AM Transmitter Circuit

September 11, 2015 by Tarun Agarwal 22 Comments

Simple Two Transistors AM Transmitter Circuit

Simple Two Transistors AM Transmitter Circuit

A transmitter is an electronic device in electronics & telecommunications, with the help of an antenna it generates radio waves. The TX generates an RF alternating current, which is applied to the antenna. When the antenna is excited by this AC then it radiates radio waves.Transmitters are used in broadcasting as well as electronic devices which communicate by radio like garage door openers, wireless computer networks, mobile phones, Bluetooth enabled devices, ships, aircraft, spacecraft, etc. This article gives an overview of what is a transmitter, AM transmitter and simple AM transmitter circuit using two transistors. [Read more…]

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