### Project 22 Soil Module

**1.Introduction**

This is an easy moisture sensor detecting the moisture of soil. If soil is lack of water, the output analog value decreases; if not, the value increases.

In this project, we use graphical programming to detect analog value of signal port of this sensor, displaying it on serial monitor.

**2.Materials Required**

1. KEYESTUDIO UNO Control Board *1
2. V5 Sensor Shield*1
3. Soil Module*1
4. Female to Female Dupont Line*3

**3.Connection Diagram**

![](media/image-20251201170747697.png)

![](media/image-20251201170757610.png)

**4.Sample Code**

```c
void setup()
{
  Serial.begin(9600);
}

void loop()
{
  Serial.print("sensorValue:");
  Serial.print(analogRead(0));
  Serial.println();
  delay( 1000 );
}
```

**5.Result**

After downloading program, we can use soil module to detect moisture in the soil. Open serial monitor , we can see corresponding value.

This is a printscreen under normal situation.

![](media/image-20251201170844480.png)

This is a printscreen when putting soil module into water.

![](media/image-20251201170909714.png)