Arduino Sound Sensor
From wikiluntti
Introduction
Simple sound sensor; output True or False.
Code 1. The simple
Tutorial page: https://arduinogetstarted.com/tutorials/arduino-sound-sensor
#define SENSOR_PIN 7
int lastState = HIGH; // the previous state from the input pin
int currentState; // the current reading from the input pin
void setup() {
Serial.begin(9600);
pinMode(SENSOR_PIN, INPUT);
}
void loop() {
currentState = digitalRead(SENSOR_PIN);
if (currentState){
Serial.println( currentState );
}else{
Serial.print("Schii");
}
}
Exercises
Code 1
Turn on the one more LED if the sound is strong enough.
#include <FastLED.h>
#define SENSOR_PIN 7
#define NUM_LEDS 10
#define LED_PIN 5
int soundState = HIGH; // the previous state from the input pin
int numLeds = 0;
CRGB leds[NUM_LEDS];
void setup() {
Serial.begin(9600);
pinMode(SENSOR_PIN, INPUT);
FastLED.addLeds<WS2812B, LED_PIN, GRB>(leds, NUM_LEDS);
FastLED.setBrightness(20);
}
void loop() {
soundState = digitalRead(SENSOR_PIN);
if (soundState){
numLeds++;
}
for (int i=0; i<min( numLeds, NUM_LEDS); i++){
leds[i] = CRGB::Green;
FastLED.show();
}
if (soundState){
Serial.println("");
Serial.println( soundState );
}else{
Serial.print("Schii");
}
}