Anduino第一个led实验求指点

hahaya

1. int led =13;
   
2. 
   
3. void setup() {
   
4.   // put your setup code here, to run once:
   
5.     pinMode(LED_BUILTIN, OUTPUT);
   
6. }
   
7. 
   
8. void loop() {
   
9.   // put your main code here, to run repeatedly:
   
10.     digitalWrite(LED_BUILTIN, HIGH);   // turn the LED on (HIGH is the voltage level)
    
11.   delay(1000);                       // wait for a second
    
12.   digitalWrite(LED_BUILTIN, LOW);    // turn the LED off by making the voltage LOW
    
13.   delay(1000);  
    
14. }

复制代码

但是这样变异上传后灯不亮 求指导啥原因。

赵AA

int led =13;

void setup() {
  // put your setup code here, to run once:
    pinMode(led, OUTPUT);
}

void loop() {
  // put your main code here, to run repeatedly:
    digitalWrite(led, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(led, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);  
}

msold5

目测没接通

hahaya

msold5 发表于 2021-9-1 19:09
目测没接通

哪个位置接线有问题呀？

kpj001

int led =13;
pinMode(LED_BUILTIN, OUTPUT);
问题出在这两句， 引脚指定用的变量名 led ， 函数里用的 LED_BUILTIN 。 楼上已经有人帮你改好了，不去试试？

还有就这个实验而言，直接插UNO上就行了，不用面包板和电阻，放心烧不了的。至于为什么，本论坛实验摸爬滚打搞几十个自然明白了