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What's this? ============ It's the source code for a t-shirt that counts how much unread e-mail the wearer has, using a Lilypad Arduino microcontroller. You can read more, and see a video demonstration, at my blog post here: http://blog.printf.net/articles/2010/03/30/email-counting-tshirt How's it work? ============== There's a Python script (gmail.py) to be run on any Bluetooth-enabled device with Python installed (I use an Android phone, you could use a laptop). The script simply downloads your Gmail RSS feed to see how much unread e-mail you have, and sends that number over a serial port every two seconds. I use /dev/rfcomm0, which is the serial device that connects my phone to the Bluetooth dongle on my Lilypad. There's also a C program (lilypad.pde) that runs on the Lilypad, reads a number over the serial port, and renders that number on a set of LEDs (I use seven LEDs). That's it.