Wemos processes that data and then transfers it to another Wemos through UART connection which then goes into the Home Assistant lan server and the server responds to that signal.
It also has a cloud feature for which I made an app in MIT App Inventor that sends the signal to my thingspeak cloud channel which is then received by an Wemos D1 mini. The server then reads the command and send a signal to the corresponding node which then turns on the light. There is a redymade app for Home Assistant that works on lan through which I send commands like turn the light on to the server. So, my project works on Home Assistant server that is flashed into a Raspberry Pi 3B. Then I designed another node which would receive the data from my cloud channel process it, send it to another node which would then send it to Home Assistant. Later on I found out that it was only limited to lan access and had and paid verson for cloud. It was also way simpler than OpenHAB and had an addon just for esp-based devices. It was perfect and had all the features of OpenHAB and even more. I started looking for alternatives and found out just the thing I was looking for.
I started studying OpenHAB and fount out that it was way too complicated for large scale deployment. Without wasting time, I bought the components and set up my first automated light. It was a game changer for me as it was open-source. The ready-made home automation products were very costly but I kept browsing until I found out about OpenHAB. I thought of automating my room to be more efficient at work. Earlier days, when I was a Raspberry pi and Arduino beginner and knew about basic components and their capabilities. As the name suggests, my project Grand Home Automation using Home Assistant is all about making life easier using home automation systems.
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