1.设计思路:
通过读取led的阻值,来对led进行控制;
当外界光度越大的时候,led灯就会越亮,反之,相反;
2.代码:
void setup() {
pinMode(6,OUTPUT);
Serial.begin(9600);
pinMode(6,OUTPUT);
Serial.begin(9600);
}
int val = 0;
int change_val = 0;
void loop() {
val = analogRead(A0);
analogWrite(6,300-val);
}
int val = 0;
int change_val = 0;
void loop() {
val = analogRead(A0);
analogWrite(6,300-val);
}