Garage door opener...or what engineers do.
Heidi got an awesome shirt for me: So here goes: I was really tired of my garage door openers working sometimes but not others, and I was totally inspired by my dad redoing his garage door openers with some cool arduino stuff so. Amazon Affiliate links to what I used: A basic 5 volt relay https://amzn.to/2Pe6YyS A nodeMCU esp8266 board with wifi (and only the size of 2 quarters, HOW COOL IS THAT! Thanks dad!) https://amzn.to/2Sn9CVi An HC-SR04 Ultrasonic sensor https://amzn.to/2TZHEQS (mine came in an arduino starter kit, I didn't spend this much on it) Some phone cord A telephone inline coupler https://amzn.to/2TZHIQC I already had some wires to connect it all, a hot glue gun, some glue, and some solder and a soldering iron. The goal was: Spin up a webserver on the ESP8266 host a web page with a button to trigger the relay detect if the garage was open or closed and display that on the web page. Here is the basic wiring diagram Not