I then use another portion of 3 or so inches of 1вЂі pvc pipe to connect to the lower portion. I then use a small piece of 1 inch pipe (about 3 or so inches) to connect another T-connector for the anemometer. I used a piece of cedar fence board to secure the sensor, then some u-bolts to attach the board to a 1 inch pvc pipe, plugged one end and drilled a hole for the wire to run through.ДЇor the rest of the top part of the mast I use a 1вЂі T-connector at the top with about 8 or so inches of 1вЂі pipe to connect the anemometer & wind vane. For the rain gauge, itвЂ™s a little different. In my anemometer & wind vane posts I have used certain PVC pieces to allow for connection to my mast. IвЂ™ve used PVC to build all my sensors as itвЂ™s easy to connect together. It works with the sensors I built, but IвЂ™m sure you could incorporate it to use any sensors you have as well. (This is actually a pic of it at my house for testing) What youвЂ™ll need for this is 1 of each of an anemometer, wind vane & rain gauge. HereвЂ™s the completed mast with sensors attached.

The communication between the two is accomplished using I2C. I had issues with the rain gauge not working too well with the pi directly, so I decided to use an Adafruit Trinket to capture the values of the sensors and send them to the pi for tracking. I finally completed migrating the weather sensors for the weather station that is at my father-in-lawвЂ™s farm.

Interupt pin on an adafruit trinket