Grove - Sound Sensor

Ljudsensorn kan upptäcka miljöens ljudintensitet. Modulens huvudkomponent är en enkel mikrofon. Output är ett analogt värde.

Kompatibilitet

• Arduino
• Raspberry Pi

Port

Analog

Exempelkod

Arduino

const int pinSound = A0;               // pin of Sound Sensor
const int pinLed   = 7;                // pin of LED

int thresholdValue = 50;                 // the threshold to turn on or off the LED

void setup()
{
    pinMode(pinLed, OUTPUT);            //set the LED on Digital 12 as an OUTPUT
}

void loop()
{
    int sensorValue = analogRead(pinSound);   //read the sensorValue on Analog 0
    if(sensorValue>thresholdValue)
    digitalWrite(pinLed,HIGH);
    delay(200);
    digitalWrite(pinLed,LOW);
}

Raspberry Pi

import time
import grovepi

# Connect the Grove Sound Sensor to analog port A0
# SIG,NC,VCC,GND
sound_sensor = 0

# Connect the Grove LED to digital port D5
# SIG,NC,VCC,GND
led = 5

grovepi.pinMode(sound_sensor,"INPUT")
grovepi.pinMode(led,"OUTPUT")

# The threshold to turn the led on 400.00 * 5 / 1024 = 1.95v
threshold_value = 400

while True:
    try:
        # Read the sound level
        sensor_value = grovepi.analogRead(sound_sensor)

        # If loud, illuminate LED, otherwise dim
        if sensor_value > threshold_value:
            grovepi.digitalWrite(led,1)
        else:
            grovepi.digitalWrite(led,0)

        print("sensor_value = %d" %sensor_value)
        time.sleep(.5)

    except IOError:
        print ("Error")

Mer information

http://wiki.seeedstudio.com/Grove-Sound_Sensor/