Light Trends in Morse

Thought I'd try my hands on programming a microcontroller coupled with some "low-tech" devices over the weekend. I didn't have a breadboard handy so I came up with the following instead -

This is basically an onboard Twitter trends reader that displays the top trends using Morse code. Information is relayed through a pulsating LED. Mobile devices such as an iPhone can also connect to the onboard server which reports the status of the connection and info retrieval from Twitter's API.

The USB provides for the board's power and can also be replaced with a normal 12V power source. The Ethernet shield may also be replaced with a WiFi shield for greater mobility.

Hardware: Arduino Uno using Amtel's ATmega328 microcontroller, with zero carbon footprint Arduino Ethernet Shield using the Wiznet W5100 ethernet chip providing for IP stacks capable of both TCP and UDP 1 LED Ethernet cable Apple iPhone

Software: Arduino library with some direct C iSSH for iOS

Credits: Michael Margolis for the data stream parser Erik Linder for the Morse code library James Choa and Marquis Tan for data parser optimization suggestions

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Science & Technology

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