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[https://goodwatch.org/posts/introducing-the-goodwatch/ GoodWatch], a project by [https://twitter.com/travisgoodspeed Travis Goodspeed] to replace the innards of a Casio calculator watch to add additional functionality, notably a transmitter/receiver using a TI CC430F6137.
Video showing the watch transmit morse code to a [[Kenwood TH-D74A|Kenwood TH-D74]] [[Amateur Radio]]
<youtube width="320" height="240">EMMu5-Bs3KY</youtube><br />
