This is my first attempt at accomplishing this. I needed a better way to access the garage when on my GoldWing. The standard remote that came with the garage door opener was beginning to fail. Off-the-shelf wireless systems were priced crazy. There had to be a better way to do this, and this is what I found. I received all the pieces and have completed the project. I added to the Blynk script a virtual LED that is on the app to show the status of the garage door. The virtual LED is RED when open and GREEN when closed. This is using an NC magnetic relay switch connected to the garage door and D3 (input) of the WeMos . On the relay, the commons are connected with a jumper wire. The use the NO connection from D1 and NC connection from D2 to connect to the physical garage door opener. This way if the power is lost on the project, once power is restored, it will no cause the door to open. Also be sure to use the 5volt connection from the WeMos to provide power to the relay..it requires 5vdc and will not work with the 3.3v output.