LM393 Soil Moisture Sensor Module
This sensor module is designed to detect soil moisture levels, making it perfect for gardening and agricultural applications.
Key Features
- Adjustable sensitivity via digital potentiometer
- Operating voltage: 3.3V-5V
- Dual output mode: digital and analog
- Fixed bolt hole for easy installation
- Compact PCB size: 3cm x 1.6cm
- Power indicator (red) and digital output indicator (green)
- Using LM393 comparator chip for stable performance
Connections
| Pin | Description |
|---|---|
| VCC | External 3.3V-5V |
| GND | External GND |
| DO | Digital output (0 and 1) |
| AO | Analog output |
Instructions
- Used to detect soil moisture levels
- DO output goes high when soil moisture is below threshold, low when above
- Can be connected directly to microcontroller or relay module
- Analog output can be used with AD converter for more accurate readings
