Wireless Electronic Notice Board using GSM

Today almost all railway stations, bus stations are using Digital Display boards to show the all kinds of information, but they are connected wires. Through the project you are going to build a unique system where you can give provide information on the Electronic Notice Board in Wireless manner(where that notice board are controlled by an SMS using GSM modem). This modem uses a SIM card and operates through a subscription with the mobile operator. Many people they don’t know how to interface GSM module with 8051 microcontroller. We will see a series of steps describing how GSM modem will be interfaced with 8051 microcontroller.

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GSM is generally called as Modem (Global System for Mobile Communications). It is a wireless communication module, which will be used to communicate with a computer or processor over the network. The GSM modem uses a variation of TDMA (Time Division Multiple Access) which is most commonly used of the digital wireless telephony technologies like TDMA, GSM and CDMA. This GSM modem needs a SIM card to operate through a network range subscribed by the network operator. This modem can be connected to a computer via a serial, Bluetooth or USB connection. This modem is also be a standard GSM mobile phone with a suitable cable and software driver to connect to a USB port on your PC. Generally, this modem is preferred instead of a GSM mobile phone. Now we will see how GSM modem interfacing with 8051 microcontroller.

Project Description:

1. GSM module: The GSM module we use is SIM 800/900 MODULE. In this modem, Bluetooth is interfaced by default. Basically there are three types of GSM module are there. 1. Data Loggers 2. Data Pushers 3. Data Pullers
2. SKYFILABS Development Board: The SKYFILABS Development Board is the board that we manufactured it. On this board 8051 microcontroller, Motor driver, Comparator (ADC) are interfaced by default. You can use it for developing robots also.
3. LCD Display 16*2: Generally we use LCD to display the limited set of output statements. At present we use mostly 16*2(4 bit communication) and 16*4(8 bit communication), which means 16 letter spaces with 2 lines and 16 letter spaces with 4 lines(each line will have 16 letter spaces)

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Project Implementation:

1. Firstly Interface GSM module and LCD to the SKYFILABS Development Board.
2. Provide power supply to all the components.
3. With the help keil Uvision software, write the code to the wireless notice board.
4. Dump the program into the 8051 microcontroller using USBASB driver.
5. Insert the SIM slot in the GSM module
6. Send the message to the GSM module using a mobile phone.
7. Now you can observe the same message on the LCD display.
8. The limitations of the wireless electronic notice board mainly include LCD display must have the network to get the message wirelessly
9. As there is no password and any unauthorized person can also send the message to display on the LCD

Software requirements:

1. You will be needing Keil UVision software-C51 version (works for 8051 and 8052 Microcontroller) to write and ProgISP Software to upload the programming logic onto the SKYFILABS Development board.

Programming language: Keil UVision (Embedded C-Programming)

• GSM module
• Development Board
• LCD

• GSM
• Wireless Charging
• Seven segment Display

Wireless Electronic Notice Board using GSM