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MSP430-based wristwatch project
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Old 29th September 2011, 08:02   #1
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Default MSP430-based wristwatch project

[Nav] is working on a scratch-built wristwatch. Although it is based on an MSP430 microcontroller, its not the ready-to-hack ezCronos that you might be thinking of. Instead, [Nav] started with a different TI development tool that weve looked at before, the ez430-F2013.

The breakout board for the F2013 is small enough to meet his needs, but still provides easy soldering with 0.1″ vias that break out each pin. To make sure the timepiece is accurate he added a 32.768 kHz clock crystal. A small, square, LCD screen acts as the face of the watch, but we didnt find specific part information for the display.

Currently the watch can run for a few days on the CR2032. Wed bet some work with sleep modes for the microcontroller can help with that. The watch has a couple of buttons that let you control it, and [Nav] discovered that he could fit everything into the watch case for an iPod nano. Thats creative!

Weve seen other hacks with tiny batteries. The next logical step here would be to swap out the disposable coin cell for something that can be topped off with an external charger.
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