A baby description 1 This is a simple moisture sensor that can be used to detect soil moisture when the soil is in water, the module outputs a high level, whereas the output is low. Use this sensor to make an automatic watering device, so that your garden plants do not have to manage. 2 Sensitivity adjustable (blue digital potentiometer adjustment) 4 Working voltage 3.3V-5V 5 Module dual output mode, digital output is simple, analog output more accurate. 6 With a fixed bolt hole, easy to install 7 Small PCB Size: 3cm * 1.6cm 8 Power indicator (red) and digital switch output indicator (green) 9 Comparator with LM393 chip, stable operation
Two-board interface description (4-wire) 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
Three instructions
1 soil moisture module is most sensitive to environmental humidity, generally used to detect soil moisture.
2 module in the soil moisture can not reach the set threshold, DO port output high level, when the soil humidity exceeds the set threshold, the module D0 output low;
3 small board digital output D0 can be directly connected with the microcontroller, through the microcontroller to detect high and low levels, which to detect soil moisture;
4 small board digital output DO can directly drive our relay module, buzzer module, etc., which can form a soil moisture alarm equipment;
5 small board analog output AO can be connected with the AD module, through the AD conversion, you can get more accurate soil moisture values;
General
Model
LM393
Quantity
1 set
Form Color
Light Grey + Multicolored
Material
PCB
Specification
Application
Garden, park
Working Voltage
3.3V-5VV
Download Link
ON
Dimensions & Weight
Dimensions
2.48 in x 0.83 in x 0.2 in (6.3 cm x 2.1 cm x 0.5 cm)
Weight
0.46 oz (13 g)
Packing List
1 x Detection board 1 x Soil moisture probe 1 x DuPont line (20cm / color randomly)
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