Web-enabled door latch

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Raw materials for the next hack morning. We are working on web-enabling the door latch at Think Tank so that we can open the door remotely from a web page. We'll be using a Node.js REST API connected to the GPIO pins on a WiFi-enabled Raspberry Pi. The GPIO pins operate a relay which operates a door latch with a builtin electromagnetic release.

[caption id="attachment_310" align="alignnone" width="300"]Raspberry Pi with relay and electromagnetic door latch. Raspberry Pi with relay and electromagnetic door latch.[/caption]

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