พอดี ตั้งตัวแปรแล้ว i ที่ตั้งไว้ค่า มันไม่ออก
|||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
volatile int i=0;//initializing a integer for incrementing and decrementing duty ratio.
#define buttonPinUP  3
#define buttonPinDOWN  4
#define Modfet  5
void setup()
{
  Serial.begin(9600);
pinMode(Modfet, OUTPUT);
pinMode(buttonPinUP, INPUT);
pinMode(buttonPinDOWN, INPUT);
}
void loop()
{
      analogWrite(Modfet,i);  // analogWrite values from 0 to 255
    
      if (digitalRead(buttonPinUP)==LOW)
      Serial.println("up");
   {
       if (i<255)
   {
       i++;//if pin up is pressed and the duty ratio value is less than 255
       delay(30);
}
}
       if (digitalRead(buttonPinDOWN)==LOW)
       Serial.println("down");
   {
       if (i>0)
   {
       i--;// if pin down is pressed and the duty ratio value is greater than 0
       delay(30);
}
}
}