International Research Journal of Engineering and Technology (IRJET) Volume: 04 Issue: 05 | May -2017
www.irjet.net
e-ISSN: 2395 -0056 p-ISSN: 2395-0072
Design of Wireless Notice Boards for Long Distance Data Transmission by using Bluetooth and nRF24l01 Bibin Mathew1, Neil D’souza 2, Shradha Gawad 3 Tinu Mathai4 [1],[2],[3],[4]Department
of Electronics and Telecommunication, St. John College of Engineering and Management, Palghar, Maharashtra-401404, India. ----------------------------------------------------------------------------***--------------------------------------------------------------------1.INTRODUCTION Abstract - A notice board is a surface intended for the posting of public messages, for example, to advertise items wanted or for sale, announce events, or provide information. Notice boards are particularly prevalent at universities. They are used by many sports groups and extracurricular groups and anything from local shops to official notices. Dormitory corridors, well-trafficked hallways, lobbies, and freestanding kiosks often have notice boards attached to facilitate the posting of notices. The notice boards currently in use employ the method of pinning a piece of paper with the message /notice written (or printed) on them. This method uses a lot of resources in that, the paper, the ink for printing, the manual labor to pin it and most particularly the time taken for the notice to be displayed on it. This process was made a bit lighter with the introduction of an electronic notice board where the uses of physical resources such as paper, ink, etc. have been eliminated. But, it uses a wired connection from the transmitter (one who sends the notice) to the board that is not very convenient. As such, our project is a modified version of an electronic notice board, a Wireless Notice Board . Similar to the electronic notice board, only the notices are displayed wirelessly
Wireless communication technology has been making tremendous progress over the past few years. The ever increasing use of wireless networks servers as an indicator of the progress in the area of wireless networks. The demand for wireless technology is increasing not only in industrial applications but also for domestic purposes. The purpose of this document is to provide a detailed description of the processes involved in the making of Wireless Notice Board both with Bluetooth module HC-05 as well as nRF24L01. This document describes the features that are included in this Wireless Notice Board, describing user functionality through different wireless communication devices like Android OS based smart phones and laptops. The main aim is to help evolve the process of displaying notices more efficiently in comparison to the present method which has well-over lasted it’s time.
In [1], authors have given a detailed comparative study of different short-range wireless protocols viz. Bluetooth (over IEEE 802.15.1), UWB (over IEEE 802.15.3), ZigBee (over IEEE 802.15.4) and Wi-Fi (over IEEE 802.11a/b/g). Main features and behaviours in terms of various metrics, including capacity, network topology, security, quality of service support, and power consumption are studied for the comparison. Our proposed model consists of three modules i.e. one Transmitter and two Receiver modules. The transmitter module consists of a wireless device such as a smart phones or laptop which has Bluetooth availability. One of the receiver modules is placed in local area where Bluetooth module and the nRF24l01 module are interfaced with an Arduino. The other receiver module is place at the remote end consists of nrf24l01 receiver and is designed for displaying messages on LCD. Primarily16x2 LCD is been used for displaying messages which we can further extend to larger LCD.
The wireless notice board is designed in a very convenient way, such that users can simply send notices using their android device. The project can be divided into two modules, the transmitter and the receiver. The transmitter is to be connected to the user s device using an application which must be installed on the device. The transmitter and the user device are connected using Bluetooth, due to it being the simplest and safest method of wireless communication. Sadly, however, the range of Bluetooth is limited (roughly about 10m) and hence, to increase the range we make use of Radio Frequency (RF) modules on the transmitter and receiver. The message sent from the user device is sent to the transmitter module using Bluetooth. The transmitter module sends this message to the receiver module using RF. The receiver module is connected to a display screen (notice board) which will display the received message. The maximum range of the modules is around 30m which can be extended to 1km using antennas.
2. RELATED WORK
Key Words: Android, Arduino, Bluetooth, MIT App Inventer,
[1]Wireless communication technologies are preferred over wired communication which is considered outdated. The paper classifies various wireless technologies such as RF, Bluetooth and ZigBee. ZigBee is the best technology for close
nrf24L01, Wi-Fi, ZigBee
Š 2017, IRJET
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