Soil/Dust Humidity/Water/Moisture Sensor
- This is a simple water sensor can be used to detect soil moisture when the soil moisture deficit module outputs a high level, and vice versa output low. Use this sensor produced an automatic plant watering device, so that the plants in your garden without people to manage.
- Sensitivity adjustable the blue digital potentiometer adjustment
- Operating voltage 3.3V-5V
- Module has digital output for more accurate.
- With fixed bolt hole for easy installation
- Small board PCB size: 3cm * 1.6cm
- Power indicator (red) and digital switching output indicator (green)
- Comparator LM393 chip, very stable
Connections:
- VCC connect to 3.3V-5V
- GND connect to GND
- DO digital value output connector（0 or 1）
- AO analog value output connector
Usage:
- Soil moisture module is most sensitive to the ambient, generally used to detect the moisture content of the soil.
- When the module can not reach the threshold value, DO port output high, when the the soil humidity exceeds a set threshold value, the module D0 output low;
- The small board digital output D0 can be connected directly to the MCU, MCU to detect high and low, to detect soil moisture;
- Small board digital output DO can directly drive the buzzer module or relay module in our store, which can form a soil moisture alarm equipment;
- Small board analog output AO and AD module connected through the AD converter, you can get more precise values of soil moisture;
