I designed a garage door control shield for the wemos D1 mini that can control one or two garage door openers and has sensors input for two doors. I am currently running GarHAge by @marthocoo on the Wemos and it is working great. The board also has a header for I2C so you can connect a temp sensor because we like data!
Instead of using a mechanical relay as others have done, I went with the MOSFET output optocoupler (aka a solid state relay) so I could achieve the shield layout. If your garage door can be controlled with a mechanical relay (ie the existing button simply shorts the two wires), this will work as well.
Since I only have one garage door, I failed to fully test my circuit before sending version one of the PCB off to OSHPark. D0 on the Wemos goes high for about a quarter of a second on boot or reset. Since door 2 was wired to D0 it means the door will open/close when this happens, which is not a great feature. I have the redesigned boards and just need to order the parts so I can verify all is well. I took the opportunity to try out OSHPark’s After Dark service with version 2 which looks pretty cool.
I have created a GitHub repository for the PCB (https://github.com/thevoltagesource/GarageControlShield) but it looks like I haven’t pushed all the commits up to it. I will get that updated soon. Hopefully this time next week I will have the new board built and tested, and repo updated. I can help if you want to build your own and a friend suggested I build a few and sell them. If there is interest I might do this.
I would love you hear your thoughts and suggestions.
Jacob
