Woohoo! My coffea arabica has its first flower after 5 years.
Here is a second description as follow up of my first post hacking a laser distance meter for Arduino Nano support.
The second device looks identical to the first one from outside. But there is a different board inside. That fits to a report of one blog commenter who is trying to modify his own device as well. In sum we got three devices with three different board layouts so far, apparently looking the same from outside.