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APRS weather station

Wind speed is passive switch quantity, wind speed sensor, turn 1 turns, 2 pulse =2HZ. Formula for wind speed: m/s=wind speed Hz * 0.34.

Wind direction: resistance network, equivalent to stepping potentiometer, the user connected to a 10K pull-up resistance voltage, SCM AD can detect the voltage. The wind direction is marked with NSWE direction.

Rainfall is passive switch, rain bucket reverses once =0.33mm

Links:

https://dwmzone.com/en/usd6-usd10/687-2113-dwm-51ws3-aprs-weather-station-evb-board.html