

V Estónsku vyvinutý kapacitný snímač vlhkosti pôdy, ktorý je dlhší a konfigurovateľnejší, ako ostatné.
Tento senzor číta dáta cez I2C protokol a poskytuje zaujmavé prednosti:
V ponuke je druhá verzia senzora s niekoľkými vylepšeniami:
Verzia: 2.7.3
Napätie: 3.3 V - 5V
Energetická náročnosť: 1.1mA @ 5V, 0.7mA @ 3.3V when idle, 14mA @ 5V, 7.8mA @ 3.3V when taking a measurement. When constantly polling sensor at full speed, current consumption averages to 4.5mA @ 5V, 2.8mA @ 3.3V
Prevádzkové teploty: 0°C - 85°C
Posun presnosti merania s meniacou sa teplotou: 10% v celom teplotnom rozmedzí
Nezabudnite pridat pullup pre SCL a SDA
Základná I2C adresa: 0x20 hex
Čítanie dát zo senzora:
To read soil moisture, read 2 bytes from register 0
To read light level, start measurement by writing 3 to the device I2C address, wait for 3 seconds, read 2 bytes from register 4
To read temperature, read 2 bytes from register 5
To change the I2C address of the sensor, write a new address (one byte [1..127]) to register 1; the new address will take effect after reset
To reset the sensor, write 6 to the device I2C address.
Do not hotplug the sensor into the active I2C bus - address change command has no protection and this might result in a random number set as an address of the sensor. Use I2C scan sketch to find out the address if the sensor stops responding with proper values.