WW1 Reviewer

Sensor Output

What is no. 1?

Sensor Input

What is no. 2?

Comparator Op Amp

What is no. 3?

Trim-pot Adjust Sensitivity

What is no. 4?

Power LED

What is no. 5?

Signal LED

What is no. 6?

Analog Out

What is AO?

Digital Out

What is DO?

LOW (less resistance and voltage)

Serial Monitor when rain sensor is wet

HIGH (higher resistance and voltage)

Serial Monitor when rain sensor is dry

int sensorPin = A0;

Part of code which shows that rain sensor is connected to analog pin

int sensorValue = 0;

Part of code which shows that you are declaring a variable named sensorValue of type integer (int) and initializing it to 0.

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

Part of code that starts serial monitor

void loop () {
SensorValue = analogRead(sensorPin);
Serial.print(“Sensor Value: “);
Serial.println(sensorValue);
}

Part of code that reads rain sensor value

Comparator Op Amp

Compares the sensor’s moisture-dependent voltage to a reference level and outputs HIGH when dry and LOW when rain is detected.

Trim-pot Adjust Sensitivity

Adjusts the sensitivity of a rain sensor by changing the reference voltage in the comparator, which sets how much moisture is needed before the sensor output switches from dry to wet.