This is how I combine the messages from 4 buttons into one.
![](https://cdn.hackaday.io/images/9811171698562817392.png)
So my PLC does not have to subscribe to too many topics and I can use each button input as a boolean.
![](https://cdn.hackaday.io/images/7120151698562990218.png)
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This is how I combine the messages from 4 buttons into one.
So my PLC does not have to subscribe to too many topics and I can use each button input as a boolean.
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