Arduino
Build a Self Opening Door with an Arduino for under $20 !
Jan
Guess what! You can build a Self Opening Door with an Arduino for under $20!
We see self-opening doors almost everywhere we go. Everywhere but our own homes! Are you tired of opening your open door? Check out this hack from Sieuwe Elferink using an Arduino Uno for control.
Here’s how it works, when someone comes within 50 cm of the door an ultrasonic sensor on the door is triggered, Sending a signal to the Arduino that uses an H-bridge relay to power a windshield wiper motor. From there it opens and closes it via a linkage setup. Then another sensor is implemented on the opposite side of the door, This allows a hands-free travel system that works both ways!
Pretty neat right? take a shot at this sweet $20 build your self! You can check out the full build here and find the source code here.
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