Hi @Adam, thanks for your reaction. It appeared this was a combination of things:
- The Library which is used flaminco.h does not like the MQTT environment and was causing a part of the problem.
- The other part was caused by myself with two instances of the Arduino program open on my windows PC with two or more sketches open switching between Arduino and MQTT and uploading them. Giving all kind of error messages.
In the end the shaky (?) library part was solved with a second 433 library (which I already used for other switches) and a forced rebuild of the sketch before upload.
Just checked and all three options work.
So far I like the MQTT environment because the device is faster online and it seems that it does not drop connection too fast, Need to implement in this project still some Rube Goldberg logic for a workaround for the unreliable triggers and scheduling.