[Barrow4491]

As you can see the reading actually increased for no reason when the sun was shining (no rain at all)???
I am at a loss to explain this

Hi,

In the rare cases that after an upgrade to v8 the rain counters aren't reset automatically, perform a manual "factory reset" by pressing the push button for 5 seconds.
Out of curiosity, have you upgraded the TX software too? It isn't required, but if you have upgraded the TX software from a very old version, it may explain what happened.

Werk,
Thanks for the info, I will wait until 0900, and see what happens. The only real test will be when it rains again (if ever).
I uploaded to the Rx with 1.8.4 (board manager 1.6.20) as recommended, but when I did the Tx, I had to use board manager 1.6.23 to get the option, ”Atmega 328P (old bootloader)”,otherwise I got a compile error.
Thanks again for a wonderful system.
I eagerly look forward to your next addition or improvement to what is already a fabulous construction challenge with a practical usage.
Kind regards and a happy new year to you and yours
Jim