The purpose of this project is to use a Twitter account to send notes to your office door and display the note to 20×4 LCD. It allows you to update your office door note from anywhere and anytime easily. Simply update your twitter status and your office door note gets update too.
The project’s hardware consists of three main parts: Arduino Uno as main brain, Arduino Ethernet Shield which allows the Arduino to connect to the Internet, and LCD for display. How the system works is simple the Arduino goes online periodically and when you post the tweet, it will fetch the message and displays it on the LCD. Besides tweet message, it also displays the current temperature from given location using data from weather.gov.