const int led = 3;
void setup()
{
// put your setup code here, to run once:
pinMode(led,OUTPUT);
}
void loop()
{
// put your main code here, to run repeatedly:
analogWrite(led,255);delay(1000);
analogWrite(led,128);delay(1000);
analogWrite(led,64);delay(1000);
analogWrite(led,32);delay(1000);
analogWrite(led,16);delay(1000);
analogWrite(led,8);delay(1000);
analogWrite(led,4);delay(1000);
}
例2:
const int led = 3;
void setup()
{
// put your setup code here, to run once:
pinMode(led,OUTPUT);
}
void loop()
{
// put your main code here, to run repeatedly:
for(int i=0;i<256;i++)
{
analogWrite(led,i);delay(15);
}
for(int i=254;i>0;i--)
{
analogWrite(led,i);delay(15);
}
}
例3
const int led1 = 9;
const int led2 = 10;
int x = 0;
void setup()
{
// put your setup code here, to run once:
pinMode(led1, OUTPUT);
pinMode(led2, OUTPUT);
}
void loop()
{
// put your main code here, to run repeatedly:
if (x == 0)
{
for (int i = 0; i < 256; i++)
{
analogWrite(led1, i); delay(15);
}
for (int i = 254; i >= 0; i--)//led真的關掉,才不會有微亮
{
analogWrite(led1, i); delay(15);
}
x=1;
}
else if(x==1)
{
for (int i = 0; i < 256; i++)
{
analogWrite(led2, i); delay(15);
}
for (int i = 254; i >= 0; i--)
{
analogWrite(led2, i); delay(15);
}
x=0;
}
}
例4: pili燈+呼吸燈
const int led[] ={3,5,6,9,10,11};
int x=0;
int delaytime=5;
void setup()
{
// put your setup code here, to run once:
for(int i=0;i<6;i++)
{
pinMode(led[i], OUTPUT);
}
}
void loop()
{
// put your main code here, to run repeatedly:
for (int i = 0; i < 256; i++)
{
analogWrite(led[x], i); delay(delaytime);
}
for (int i = 254; i >= 0; i--)//led真的關掉,才不會有微亮
{
analogWrite(led[x], i); delay(delaytime);
}
x++;
if (x== 6)x=0;
}
2020年1月30日 星期四
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