Ундааны саванд хүрэх үед дуу гарах

 

#include <CapacitiveSensor.h>/*
 * Makes the built in LED next to pin 13 blink when the capacitive sensor
 * reaches the threshold value
 */
CapacitiveSensor   cs_4_2 = CapacitiveSensor(4,2);        // 10M resistor between pins 4 & 2, pin 2 is sensor pin, add a wire and or foil if desired// You may need to adjust this value to work for your particular sensor.
// Use the capacitive sensing test sketch to get a sense of the range of values
// coming from your capacitive sensor.
int speakerPin = 8;
int toneVal;
int threshold = 50;void setup()                    
{
  cs_4_2.set_CS_AutocaL_Millis(0xFFFFFFFF);     // turn off autocalibrate on channel 1 - just as an example
  pinMode(LED_BUILTIN, OUTPUT);
  pinMode(speakerPin, OUTPUT);
  Serial.begin(9600);
}void loop()                    
{
  long capVal =  cs_4_2.capacitiveSensor(30);
  Serial.println(capVal);
  toneVal = capVal;if ( capVal > threshold ) {
    digitalWrite(LED_BUILTIN, HIGH);
    tone(speakerPin, 3000, 150);
  } else {
    digitalWrite(LED_BUILTIN, LOW);
    noTone(speakerPin);
  }}