I’d been peering at the anemometer (spinny bit that measures the wind speed) and it looked like it needed a good gust of wind to start it rotating rather than the mildest summer breeze that used to get it going. After 5 years of non-stop spinning the bearings had worn out. Prodata in Ely where I bought the original kit got a new bearing unit to me the next day and I have just fitted it with help from my neighbour David who gave much technical support and also helped with the ladder. There are some funny readings around 11:00 when we were testing the kit and the 6mm rain at the time are a result of jogging the rain gauge.