“The ‘brain’ is the ESP8266 uC. It is available with on board WiFi and plenty of I/O for smaller projects. All this for well under $10USD with programming options for NodeMCU, MicroPython, and the Arduino IDE. There seems to be an unstoppable drive in the hacker DIY community for web based garage door openers and we were compelled to respond. The garage door opener we have opens/shuts from a push button switch that basically creates a short to connect two terminals on the garage door opening unit. That allows easy implementation because all that is required is a ESP8266 controlled relay wired across those two terminals to create a switch closure. In addition to activating the door any activity is logged to a Google Sheet via the IFTTT.com Maker Channel. This is handy to track all activation usage and ESP8266 server restarts. The main components are the ESP8266, a relay module, a BS170 N-Channel MOSFET.”