Finally completed my trinket weather sensors. An anemometer, wind vane, & rain gauge.
The anemometer is made with PVC & ladles from Walmart. It uses a reed switch and a magnet to count rotations. I calibrated it by hanging it out the window in my car. (Wife was driving). The wind vane uses a 10k 360 degrees Bournes potentiometer. The rain gauge is Acurite wireless sensor that I bought at walmart and cut apart to work with my setup. I connect it to a rasp pi via I2C to go with my other sensors and load into my database.
This will be setup at the in-law's farm to record the wind and rain.