Question

**我想立即打开所有3个led，然后等待（10或20个seceonds无论如何），然后关闭所有3个led;＆＃39; s ** 这是我的代码：

// the setup function runs once when you press reset or power the board
void setup() {
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(LED_BUILTIN, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(13, HIGH); 
  digitalWrite(12, HIGH); 
  digitalWrite(11, HIGH); // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(13, LOW);
  digitalWrite(13, LOW);
  digitalWrite(13, LOW);// turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}

但它不起作用。那么，我怎么能一次又一次地把所有人都转过来？

所有人都在arduino uno中眨眼

0 个答案: