The project aims to design a college notice board with P10 LED display using an Android smart phone and IOT. We can implement this technology in schools, colleges, banks etc… After accessing every message, it automatically resets and indicated by LED.   Wi-Fi (Short for Wireless Fidelity) is a wireless technology that uses radio frequency to transmit data through the air. Wi-Fi has initial speeds of 1mbps to 2mbps. Wi-Fi transmits data in the frequency band of 2.4 GHz. It implements the concept of frequency division multiplexing technology. Range of Wi-Fi technology is 40-300 feet.   The main controlling device of the whole system is an Atmega32p microcontroller. WI-FI module, buzzer and P10 LED display are interfaced to the Atmega32p Microcontroller. The text-based command fed to android smart phone will be transmitted over smart phone through Wi-Fi. This information will be received by the esp8266 Wi-Fi module which is interfaced to Atmega32p microcontroller. Microcontroller processes this information and scrolls the message on the P10 LED display. The Microcontroller gives a long beep sound for every new message. The older message will be replaced when a new message occurs. To perform the task, Atmega32p is loaded with an intelligent program written in embedded ‘C’ language.

 

The main objectives of the project are:

1. Message input is through text commands from an android phone.
2. Using of IOT Technology.
3. Auto overwritten of new message.
4. Long beep to intimate regarding the latest message.

The project provides learning’s on the following advancements:

1. Esp8266wi-fi module interfacing with controller.
2. Conversion of AC supply to DC supply.
3. Embedded C programming.
4. PCB designing.

The major building blocks of this project are:

1. Regulated Power Supply.
2. Atmega32.
3. P10 LED display.
4. LED indicators.
5. Buzzer with driver.
6. ESP8266 Wi-Fi module.

Software’s used:

• Arduino IDE for compiling and dumping code into Microcontroller
• Express SCH for Circuit design.

     

   

Regulated Power Supply:    

 

     

 

Block diagram:    

 

     

 

video: