Product Name: Soil Moisture Detection Module

Size: 36mm*15mm*6mm

Voltage: 3.3-12VDC

Current: <30ma

Interface: +-AO DO

AO outputs analog and DO outputs digital. DO output

The current is about 10ma.

The probe uses the form of analog resistance to detect the moisture content of the soil.

Principle: When the probe detection exceeds the set value, DO outputs low level, and the triode is turned on.

load work. 1K is the current limiting resistor, and 10K is the pull-up resistor of D0 port.

Principle: Without too many complicated circuits, the A0 port can directly collect the voltage through the AD port of the single-chip microcomputer.