voltage corresponding to each can be found on page 2 of the weather
meter’s datasheet. Our example code provides you with a solid example on
using the direction sensor, as well.
Soil Moisture
SparkFun’s soil moisture sensor can be connected to the shield and
monitored via analog voltage conversion. The sensor connects to pin 26 of
the ESP32 Thing.
Rainfall
The weather station will also provide you with a rainfall gauge. Much like
the wind speed gauge, the rainfall gauge generates ticks to tally the amount
of rain that has fallen. Count ticks to determine how much rain has fallen
recently. Each tick represents 0.011" (0.28mm) of rainfall. This sensor is
connected to pin 25 of the ESP32.
External Temperature
If you so desire, you can connect one of our TMP36 external temperature
sensors to the board at this location. Connecting it through a short wire will
allow you to measure temperature outisde of the enclosure that the rest of
the system is in. It measures with a 10mV/deg C output voltage. It is
connected to pin 13 of the ESP32.
Page 7 of 20
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