My little weather station is run on a Nano and has the anemometer and the temp/humidity sensor. A smoke detector is on the way because I live where wildfire is a big concern.
I would like to build a simple weather vane without spending a lot to buy the commercial solutions. Rotary potentiometers have dead spots and using a bunch of hall effect sensors would use up too many digital inputs to be useful, afaik.
Question: How can I build a simple direction sensor?