**I. Introduction to Soil Moisture Sensor**
1. The soil moisture sensor is designed for measuring the moisture content in the soil, making it ideal for agricultural and environmental monitoring applications.
2. The module includes a blue potentiometer that allows users to adjust the moisture threshold. Turning the potentiometer clockwise increases the threshold, while turning it counterclockwise decreases it.
3. The digital output (D0) can be directly connected to a microcontroller, such as an Arduino, which detects high or low levels to determine the moisture level.
4. The analog output (AO) provides a range of 0–1023, which can be connected to an ADC module for more precise readings of soil moisture levels.
**II. Features and Functions of the Soil Moisture Sensor**
The sensor is compact, portable, and easy to install, making it suitable for both indoor and outdoor use. Its design is practical and durable, with stainless steel probes ensuring long-term performance. The outer casing is made of epoxy resin, offering excellent waterproofing and resistance to corrosion, allowing it to be buried directly in the soil without damage.
The sensor has high measurement accuracy, stable performance, and fast response time, making it reliable for real-time monitoring. It is widely used in smart irrigation systems, greenhouses, and other applications where soil moisture control is essential.
**III. Main Technical Parameters**
1. Due to long-term exposure to moisture, the typical lifespan is around one year, though this may vary depending on the manufacturing process.
2. The threshold can be adjusted using the potentiometer. When the soil moisture is below the set value, the D0 output goes high, and the indicator light turns on. When the moisture is above the set value, D0 outputs low, and the light turns off.
3. The module uses an LM393 comparator for stable operation.
4. It operates within a voltage range of 3.3V to 5V. At 3V, the AO reading in air is up to 695, and in water, it drops to 245. At 5V, the maximum AO reading in air is 1023, while in water it remains at 245.
**IV. Bill of Materials (BOM)**
- Arduino Uno × 1
- Soil Moisture Sensor × 1
- Jumper wires × several
**V. Wiring Method**
**Pin Description**
- VCC: Connects to an external power supply (3.3V–5V).
- GND: Connects to the ground.
- DO: Digital output interface (high or low signal).
- AO: Analog output (0–1023).
Note: The two wires from the sensor are not polarized; just connect them to the probe without worrying about positive or negative polarity.
Terminal Connector*Cable Lugs
Terminals refer to terminal Connectors,which are divided into single holes,double holes,sockets, hooks etc.From materials:copper plating, copper galvanizing, copper,aluminum,iron,etc.Their role is mainly to transmit electrical signals or to conduct electricity.
Our company's Terminal Connectors are divided into these series(as follow),which are hot-selling in recent few years:
Copper Tube Connectors(GTY)
JGK End Junction Terminal Connectors
JGA End Junction Terminal Connectors
JGY End Junction Terminal Connectors
JGB End Junction Terminal Connectors
DTL-1 Aluminium-Copper Terminal Connector
DTL-2 Aluminium-Copper Terminal Connector
DT Copper End Junction Terminals
DL Aluminium End Junction Terminals
Bus-Bar Terminal Connector
SM Insulate Terminal Connectors
One hole long barrel copper lugs
Two holes long barrel copper lugs
Terminal Connectors,Sc Cable Lug,Cable Lug,Terminal Lug
Ningbo Bond Industrial Electric Co., Ltd. , https://www.bondelectro.com