int up=2;
int down=4;
int led=3;
void setup()
{
pinMode(up,INPUT);
pinMode(down,INPUT);
pinMode(led,OUTPUT);
}
void loop()
{
int up=digitalRead(2);
int down=digitalRead(4);
if(up==HIGH)
{
for(int a=0;a<=255;a++)
{
analogWrite(led,a);
delay(10);
}
}
if(down==HIGH)
{
for(int b=255;b>=0;b--)
{
analogWrite(led,b);
delay(10);
}
}
} |