then the famine, and finally eureka!

I decided to make the clone loggers work with WeatherLink in mid February 2012. This went well for the best part of a year and a half with steady sales. And then something bad happened. I started to get emails from users stating that their console would return the message "incompatible logger".

This was a problem. Davis had updated the firmware on their latest consoles to only accept genuine Davis loggers. I didn't have a clue what they had done. But it did turn into a nightmare for them as well; their older loggers also didn't work.

This became known as the green dot issue since all the latest consoles were supplied with a green sticker on the packaging.

This is when the famine started, I could no longer supply my clones.


But then came the Eureka moment.

WXforum member rdsman made the suggestion that Davis were programming the security register in the logging chip. After several months of chasing around we had found the actual method used. All credit for this must go to members rdsman, torkelmj, travisc, and more importantly watson, who published the algorithm.

This led to me being able to sell loggers again.