Size 31mm*15mm*7mm
Weight 8g
Voltage 3.3V-5V
Description
1 This is a simple moisture sensor that can be used to detect soil
moisture. When the soil is short of water, the module outputs a
high level, and vice versa. Use this sensor to create an automatic
watering device that allows plants in your garden to be left
unmanaged.
2 Sensitivity adjustable (blue digital potentiometer adjustment in
the figure)
4 working voltage 3.3V-5V
5 module dual output mode, digital output is simple, analog output
is more accurate.
6 Fixed bolt holes for easy installation
7 small board PCB size: 3cm * 1.6cm
8 power indicator (red) and digital switch output indicator (green)
9 comparator uses LM393 chip, stable operation
Small board interface description (4-wire system)
1 VCC external 3.3V-5V
2 GND external GND
3 DO small board digital output interface (0 and 1)
4 AO small board analog output interface
The instructions for use
1 Soil moisture module is sensitive to environmental humidity and
is generally used to detect soil moisture.
2 Module When the soil moisture does not reach the set threshold,
the DO port outputs a high level, when the soil moisture exceeds
the set threshold, the module D0 outputs a low level;
3 small-plate digital output D0 can be directly connected with the
single-chip microcomputer, and the high-low level is detected by
the single-chip microcomputer, thereby detecting the soil moisture;
4 small board digital output DO can directly drive the store's
relay module, buzzer module, etc., which can form a soil moisture
alarm device;
5 small plate analog output AO can be connected with AD module,
through AD conversion, you can get more accurate values of soil
moisture;
The delivery list
1 Set of soil moisture detection module finished board as shown in
the figure (including test board and soil moisture probe)
2 20cm DuPont line 5, convenient wiring.
