[AllanG]

...but modifying a Fine Offset one, to use a hall sensor instead of a read switch, maybe could be done. Why not?

Yes, it could be an interesting experiment to try and replace the Reed Switch with a Hall Sensor.

Personally however.....

I've been using Fine Offset since December 2008. In that time I've only had to replace the anemometer which is quite good for such a relatively inexpensive device. It's age is beginning to show now though and some of the plastic parts - again especially the anemometer - are quite brittle. I'll have to replace the whole setup very soon but, although just a "hobby station", I want to improve the accuracy of my data if possible, particularly windspeed and direction. I did look at a complete Davis station but the cost of what I want would be more than £800.

With WeatherDuino though, we get highly accurate temperature, humidity and pressure sensors very cheaply. Personally, I think I would be happy to spend £230 for the Vortex Direction and Anemometer units as I would then have a station very close to the Davis spec but at far less cost if they were compatible with WD. I need to do more research on the Vortex units but they seem very good both in accuracy and durability.

Allan.