Project 2.13.1: OPERATING A SOUND SENSOR WIITH ONE LED

Description	You will learn how to build a simple circuit with sound sensor and led
Use case	Imagine you want to check the amount of noise in your area and your led(light) alerting you on how noisy a particular area is.

Components (Things You will need)

Building the circuit

Things Needed:

• Arduino Uno = 1
• Arduino USB cable = 1
• Sound sensor = 1
• Red jumper wire = 1
• Black jumper wire = 1
• Green jumper wire = 1
• Orange jumper wire= 1
• Blue jumper wire = 1
• Purple jumper wire= 1
• Breadboard = 1

Mounting the component on the breadboard

Step 1: Insert on the sound sensor on the bread board and make sure each pair of the pins are connected on each side of the bridge:

.

Step 2: Insert on the LED on the bread board and make sure each pair of the pins are connected on each side of the bridge:

.

NB: Make sure you identify where the positive pin (+) and the negative pin (-) is connected to on the breadboard. The longer pin of the LED is the positive pin and the shorter one, the negative PIN.

WIRING THE CIRCUIT

Things Needed:

• Arduino Uno = 1
• Red male-to-male jumper wire = 1
• Black male-to-male jumper wire = 1
• Green male-to-male jumper wire = 1
• Orange male-to-male jumper wire=1
• Blue jumper wire = 1
• Yellow jumper wire = 1

Step 1: Connect the red male-to-male jumper wire to (+) on the sound sensor to 5V on the Arduino UNO board as shown in the image.

Step 2: Connect the black male-to-male jumper wire to (G) on the sound sensor and the other end of the wire to GND on the Arduino UNO. As shown in the picture below:

.

Step 3: Connect the black male-to-male jumper wire to (A0) on the sound sensor and the other end of the wire to A2 on the Arduino UNO. As shown in the picture below

.

Step 4: Connect the orange male-to-male jumper wire to (D0) on the sound sensor and the other end of the wire to digital pin 6 on the Arduino board as shown below.

.

Step 5: connect blue male-to-male jumper wire to the positive (longer leg) of the LED and the other end to the digital pin 8 on the Arduino board as shown below.

.

Step 6: Using the purple male-to-male jumper wire, connect one end of the wire to negative (shorter leg) of the LED and the other end to the “GND” on the Arduino as shown below.

.

make sure you connect the arduino usb blue cable to the Arduino board.

.

just as shown above, connect your USB cable to the Arduino board and to your laptop.

PROGRAMMING

Step 1: Open your Arduino IDE. See how to set up here: Getting Started.

Step 2: Type

const int SoundSensorPin = A0; 
const int SoundSensorD0 = 6;
const int LED = 8; 
 ``` 
 as shown in the picture below.


![Pinmode decalration](../../assets/2.0/7.1.%20SoundSensor%20+%20LED1/code1.webp).

**Step 3:** In the {} after the void setup (), Type
``` cpp
 pinMode (ledPin, OUTPUT); 
pinMode (soundSensorDOPin, INPUT);  
pinMode(SoundSensorPin, INPUT);
Serial.begin (9600); 

as shown below;

.

Step 3: In the {} after the void loop (), Type

int SensorData= digitalRead(SoundSensorDO); 
int SoundValue = analogRead (SoundSensorPin); 

as shown below;

. - The above code reads data from the soundSensorPin.

Step 3: Type if (soundValue > 100 ) { } as shown below;

.

Step 3: Type else { } ; as shown in the image below;

.

Step 2: Type cpp digitalWrite(LED, HIGH); Serial.println(SoundValue); delay(200); Serial.printIn (SoundValue); as shown in the picture below.

.

Step 3: Type digitalWrite (LED, LOW); as shown in the image below;

.

Step 4: Save your code. See the Getting Started section

Step 5: Select the arduino board and port See the Getting Started section:Selecting Arduino Board Type and Uploading your code.

Step 6: Upload your code. See the Getting Started section:Selecting Arduino Board Type and Uploading your code

CONCLUSION

If you encounter any problems when trying to upload your code to the board, run through your code again to check for any errors or missing lines of code. If you did not encounter any problems and the program ran as expected, Congratulations on a job well done.