#define hehe 9
char incomingByte = “”;
void setup(){
Serial.begin(9600);
pinMode(hehe,OUTPUT);
TCCR2A = _BV(COM2A1) | _BV(COM2B1) | _BV(WGM21) | _BV(WGM20);
}
 
void loop(){
if (Serial.available() > 0) {
incomingByte = char(Serial.read());
if (incomingByte == ‘1’){
Serial.print(1);
analogWrite(9,50);}//20%}
if (incomingByte == ‘2’){
Serial.print(2);
analogWrite(9,180);}//70%
if (incomingByte == ‘3’){
Serial.print(3);
analogWrite(9,250);}//100%}
}
}