Talajnedvesség-érzékelő mérőmodul Modul vízszonda Talajnedvesség-tesztelő Higrométer páratartalom-mérő elemző érzékelő Dupont kábel
Soil Moisture Sensor Meter Module Probe Water Soil Moisture Tester Hygrometer Humidity Measuring Analyzer Detector Dupont Cable
Description
1 This is a simple moisture sensor that can be used to detect the moisture in the soil. When the soil lacks water, the module outputs a high level, otherwise it outputs a low level. Use this sensor to make an automatic watering device, so that the plants in your garden do not need to be managed by humans.
2 Sensitivity is adjustable (the blue digital potentiometer is adjusted in the picture)
4 Working voltage 3.3V-5V
5 Module dual output mode, simple digital output, more accurate analog output.
6 Equipped with fixing bolt holes for easy installation
7 Small board PCB size: 3cm * 1.6cm
8 Power indicator (red) and digital switch output indicator (green)
9 The comparator uses the LM393 chip, which works stably
Two 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
Three instructions
1 The soil moisture module is sensitive to environmental humidity and is generally used to detect soil moisture.
2 When the soil moisture does not reach the set threshold, the DO port outputs high level. When the soil moisture exceeds the set threshold, module D0 outputs low level;
3 The small-board digital output D0 can be directly connected to the single-chip microcomputer, and the high and low levels are detected by the single-chip microcomputer, thereby detecting the soil moisture;
4 small board digital output DO can directly drive our relay module, buzzer module, etc., which can form a soil moisture alarm device;
5 The analog output AO of the small board can be connected with the AD module, through AD conversion, a more accurate value of soil moisture can be obtained
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