BirdCalls: how an old payphone became a decade-long lesson in what technology is for

There’s a yellow payphone bolted to a wall in Takoma Park, Maryland. Pick up the handset, press a number, and instead of a dial tone you hear a night heron, a red-tailed hawk, a wood thrush. No spare change needed. No app to download. Just a phone, a button, and the sound of a bird […] The post BirdCalls: how an old payphone became a decade-long lesson in what technology is for appeared first on Arduino Blog.

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