Hello,
first I want to say this is a very cool project your are realizing here!
Unfortunately I have a problem using yore Telelogger.ino with your Freematics hub. It doesn't matter which VIN I use, I always get the error message "Invalid VIN".
I tried e.g. these VINs: WVWZZZ6NZTY112309 and W0LGT8EN9E1090600
Please can you tell me what could cause the error?
Thanks in advance,
Mario