I used a $5 Sonoff Basic smart switch to automate my garage door opener (I broke one). Only using a screwdriver, an old appliance plug, and the smart switch, I managed to fry the $50 circuit board in one garage door opener and get the other one working!! Now I open and close my garage door using the Google Home and Alexa apps as well as using my voice with the Google Assistant and Alexa.

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