2017-04-12 00:03:23 +00:00
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Howdy y'all,
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This is a side project of mine to build a replacement circuit board
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2017-09-12 11:53:13 +00:00
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for the Casio 3208 module, used in the Casio CA-53W and related
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2017-09-12 17:25:34 +00:00
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calculator watches. It is probably not compatible with the 3228
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module used in the Databank watches, which have four external buttons
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instead of two. As a side project, it has no warranty whatsoever and
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you shouldn't use it for anything.
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2017-04-12 00:03:23 +00:00
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In the rare case that you find this project to be useful, you owe me a
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pint of good, hoppy pale ale. All license to use this project is
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revoked if you try to pass off a pilsner instead.
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2017-09-01 17:48:08 +00:00
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This project is not yet public, but it will eventually be open source.
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Please give me time to verify it first.
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2017-04-12 00:03:23 +00:00
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73 from Pizza Rat City,
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--Travis
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2017-09-01 17:48:08 +00:00
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## Hardware Status
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This replacement board is based around the CC430F6137, which combines
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an MSP430 microcontroller with an LCD controller and a sub-GHz radio.
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The initial version, the GoodWatch10, lacks a filter chain for the
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radio and is only useful for verifying the correctness of the
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non-radio portion of the design. It is believed to be correct, but
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has not yet been manufactured or assembled for verification.
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2017-09-12 11:53:13 +00:00
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Assembly is a bit difficult, as components are 0201 wherever possible
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and the central chip is QFN.
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2017-09-01 17:48:08 +00:00
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## Software Status
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The firmware has not yet been written. We will aim for a
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GCC-compatible image, focusing first on battery life and watch
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functionality, only later on fancy radio features. Because of limited
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power availability, initial applications will be transmit-only.
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