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Re:Show HN: An etcd backed DHCP server by _e on Tuesday July 18, 2017 @12:16AM (#14794231)
Can you share more information on how your setup physically unlocks the door? Does it involve an electric strike or a motor that turns a lock?
Re:Show HN: An etcd backed DHCP server by selvakn on Tuesday July 18, 2017 @03:04AM (#14794763)
Sure.

This is the lock that Im using: http://www.ebay.com/itm/12V-Electromagnetic-Door-Locks-Magne... . Its electromagnetic and not a turn lock.

And the actuator that I built to control the lock is something like this: https://www.tindie.com/products/Armtronix/wifi-esp8266-solid...

The callback script in the dhcp server pushes an event to a mqtt broker on dhcp commit event.

And all of these orchestrated by home-assistant.io, on top of which, we have also mobile and voice (alexa) integration too.