Digital notice board

Abstract

Notice boards are one of the powerful communication mediums for mass media. Notice Board is a primary thing in any institution/organization or public places like bus stations, railway stations, schools, universities, and parks. To convey any information to the people in public places, we have designed an IOT-based Digital Notice Board using AT MEGA 328 Microcontroller, GSM module, LCD, and Buzzer. Wired Connection is established between GSM module, Microcontroller, and LCD. A Buzzer is attached with the Microcontroller to produce a Message Alert. Power Supply is given to AT MEGA 328 Microcontroller. A SIM card is inserted into the GSM Module, and it is used for calling and sending a message. When the user sends the message from the Mobile phone (Default Message application) to the particular SIM Number inserted into the GSM module, it will receive the message and pass it to the Microcontroller. Now the Microcontroller will give the Message to the LCD, and then the message will display on the LCD along with the Buzzer sound. This Message can be visible to everyone nearer to the Notice Board. Also, multiple users can send a message at a time; it will be displaying the notifications based on their priority. We can use the device anywhere irrespective of deployment, provided mobile network connectivity is available.