PUSH N900 Rolodex© Hack.
21.09.09
Third in our series of inspirational hacks is the PUSH N900 Rolodex©. Full details below and we’ve even got a video so you can check out all that analogue/digital loveliness up close.
With a Rolodex© to keep track of phone numbers and newly available answering machines to take messages, businesses in the 1980s no longer missed that important phone call. Now, of course, contacts and voice mail are seamlessly integrated into the N900’s user interface. Travel back in time to call your favorite characters from Saturday morning cartoons.
INSTRUCTIONS
1. Rotate the wheel.
2. Touch the screen to call the selected contact.
HOW DOES IT WORK?
An Arduino connected to the Rolodex© detects the position of the wheel and sends that information over Bluetooth to the N900. Each position indicates a specific contact. A Python script receives the incoming information and uses the xtst library to emulate the key presses and screen touches that would be necessary to view that contact and, when you touch the screen of the phone, to place a call.
You can see the N900 Rolodex© hack in action in this YouTube video courtesy of Valério:
Inspired? Then make a submission. Have questions? Then join in the discussion or get in touch.

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