arduino code =
diesel heater 12v

int LED1 = 4;
int LED2 = 6;
long previousMillis = 0;
long interval = 100;
unsigned long currentMillis = 0;
unsigned pwm1;
unsigned pwmSpan;
void setup(){
pinMode(9, OUTPUT);
pinMode(LED1, OUTPUT);
pinMode(LED2, OUTPUT);
TCCR1A = _BV(COM1A1) | _BV(COM1B1) ;
TCCR1B = _BV(WGM13) | _BV(CS11);
Serial.begin(9600);
}
void loop(){
currentMillis = millis();
{
previousMillis = currentMillis;
ICR1 = pwmSpan = map(analogRead(A3),0,3023,6000,1000);
///ΠΡΩΤΑ ΔΥΟ ΝΟΥΜΕΡΑ ΑΝΑΛΥΣΗ ΣΥΧΝΟΤΗΤΑΣ ΠΑΛΜΟΥ ΑΝΤΛΙΑΣ ΔΕΥΤΕΡΑ ΔΥΟ ΕΥΡΟΣ ΣΥΧΝΟΤΗΤΑΣ
pwm1 = analogRead(A0);
pwm1 = map(pwm1,0,1103,2000,pwmSpan); // ΕΥΡΟΣ ΠΑΛΜΟΥ ΣΥΧΝΟΤΗΤΑΣ ΑΝΕΜΙΣΤΗΡΑ
OCR1A = pwm1; // set PWM pin 9
delay(350);
digitalWrite(LED1, HIGH);
delay(100);
digitalWrite(LED1, LOW);
delay(350);
digitalWrite(LED2, HIGH);
delay(100);
digitalWrite(LED2, LOW);
delay(10);
}}