Hello so I was planning to purchase one of these:
After viewing the datasheet from here (assuming this is the correct product)
I cannot figure out how I can test this sensor separately from the kit with my Arduino Uno board. I will be purchasing a breakout board for the RJ11 socket from Sparkfun.
Sorry if this has been asked before, I haven't been able to find any clear sources on how to connect this specific sensor. By the looks of it, I only need to use inner 2 pins? If that is the case I cannot tell where each pin connects to.
Any help is appreciated!
The wind sensor is almost certainly just a switch that briefly closes one or more times per revolution. The Sparkfun example works that way.
Just wire it to the Arduino the way you would a pushbutton, using either a pullup or pulldown resistor. I would not use the RJ-11 connector -- just cut it off and access the appropriate wires. Identify them by using your multimeter to check for continuity/switch closure.
Another possibility is that the wind gauge contains a small DC motor acting as a generator. That would be more expensive and less reliable, but if so the analog input on an Arduino can read the output voltage and convert that to wind speed.