I created a simple hack with a cheap doorbell from Grundig.
See this demonstration video on youtube. https://www.youtube.com/watch?v=l9GmqCqmAQ0
I modified 1 receiver and catch the led (hi input) using a wemos esp.
This works brilliant as I forward the status to Openhab which sents me a image by Telegram

The thing is it receives 5 to 8 hi inputs and sents them as seperate events to openhab (mqtt). I want just one event so I want to aggregate to just one event.
I can try to solve it in openhab using a rule, but it seems there is a rule engine in espeasy as well!
Can someone give me a headstart where to begin or what to do?
BTW, I love this software! it's awesome.