I have a Davis 7911 Anemometer (https://www.davisnet.com/product/anemometer-for-weather-monitor-or-wizard/) that I'd like to interface to the weather board. The pinouts for the RJ11 from the Davis appear to be this:
Pin 1: Not connected Pin 2: Power Pin 3: Wind direction Pin 4: Ground Pin 5: Wind speed Pin 6: Not connected
I was wondering how best to hook this up. Browsing through the source, it appears I might be able to reassign the pins in software, but I'm unsure of the implications of this. Failing that I suppose I could build a breakout box where I can re-wire the pin assignments.
Just to followup on this, I was able to make the Davis anemometer work by setting up a new voltage table and changing the WIND_FACTOR in SDL_Pi_WeatherRack.py from 2.400 to 3.619. This is needed because the Davis reads 2.25 MPH at 1 revolution per second, versus 1.492 MPH at 1 revolution per second with the standard anemometer.
I also had to use a breakout to wire the Davis to the Weatherboard.
Last Edit: Feb 3, 2018 7:06:07 GMT -8 by kbrighton