ModuleSoil Moisture Sensor Module for Robot Smart Car
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- Product 11/65
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Description
1 the moisture sensor can be used to detect soil moisture, when soil water deficit, module outputs a high level, and output low level. This sensor is a automatic watering device, make your garden plants not to management by you
2 adjustable sensitivity (blue digital chart potentiometer adjustment)
3 working voltage: 3.3V-5V
4 module double output mode, digital output is simple, analog output is more accurate
5 provided with fixing bolt holes, easy to install
6 PCB size: 3cm * 1.4cm
7 the power indicator light (red) and digital output switch indicating lamp (green)
8 comparator LM393 chip, stable work
Interface specification
1 VCC external 3.3V-5V
2 GND external GND
3 DO small board digital output interface (0 and 1)
Instructions for use
1 Soil Moisture module is most sensitive to the environment humidity, generally used for humidity detection of soil
2 module in the soil humidity is not up to the preset threshold, the DO port output high level, when soil moisture exceeds the preset threshold, module D0 output low level
3 small digital output D0 can be directly connected with the MCU, the MCU to detect high level, thereby to detect soil moisture
4 small board digital output DO can directly drive the relay module, buzzer module, which can form a soil moisture alarm device
5 small board analog output AO can be connected with AD module, through the AD conversion, can obtain more accurate numerical soil moisture
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