int RED=23;
int BLUE=4;
int GREEN =5;
int BUZZER=12;
int channel=0;
int color[]={RED,BLUE,GREEN};
void setup(){
  pinMode(RED,OUTPUT);
  pinMode(BLUE,OUTPUT);
  pinMode(GREEN,OUTPUT);
  ledcAttachChannel(BUZZER, 5000, 8, channel);
  Serial.begin(115200);
}
void loop(){
 /* double rand= random(26)/25.0;
  Serial.println(rand);
  if( rand<0.33){
    digitalWrite(RED,HIGH);
    ledcWriteTone(channel,1000);
    delay(1000);
  }
  else if (rand<0.67){
    digitalWrite(GREEN,HIGH);
    ledcWriteTone(channel,2000);
    delay(1000);
  }
  else{
    digitalWrite(BLUE,HIGH);
    ledcWriteTone(channel,3000);
    delay(1000);
  }
  for( int i=0;i<3;i++){
    digitalWrite(color[i],LOW);
  }
  ledcWriteTone(channel,0);*/



  digitalWrite(RED, HIGH);
  digitalWrite(BLUE, LOW);
  digitalWrite(GREEN, LOW);
  ledcWriteTone(channel,1000);
  delay(1000);

  digitalWrite(RED, LOW);
  digitalWrite(BLUE, HIGH);
  ledcWriteTone(channel,2000);
  delay(1000);

  digitalWrite(BLUE, LOW);
  digitalWrite(GREEN, HIGH);
  ledcWriteTone(channel,3000);
  delay(1000);

  digitalWrite(GREEN, LOW);



}