Published on April 1, 2016
I created an automatic door opener that I control remotely by using my cellphone to signal the littleBits cloudbit. When the cloudbit is activated, an MP3 recording calls our dog, then a 12 VDC motor turns a ball screw to push open the storm door. After a 20 second pause, the door closes and the system shuts off. This is all monitored using a web-cam to verify that the dog went in or out.I've used it several times while I'm away at work, and it really works.
Duration: many hours