学习0基础ARDUINO电子设计实战指南第2个实验遇到问题

leozcr

第二个实验是改变管脚控制发光二极管，我成功的改变了管脚，但是我再改回去以后发现13管脚的发光二极管和第7管脚的发光二极管居然同时闪亮，这个怎么回事呢？
这个是发光二极管插在13管脚闪亮的程序

• /*
•   Blink
•   Turns on an LED on for one second, then off for one second, repeatedly.
•   This example code is in the public domain.
• */
• // Pin 13 has an LED connected on most Arduino boards.
• // give it a name:
• int led = 13;
• // the setup routine runs once when you press reset:
• void setup() {
•   // initialize the digital pin as an output.
•   pinMode(led, OUTPUT);
• }
• // the loop routine runs over and over again forever:
• void loop() {
•   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);               // wait for a second
• }
  

• 第七管脚插入发光二极管闪亮程序
• /*
•   Blink
•   Turns on an LED on for one second, then off for one second, repeatedly.
•   This example code is in the public domain.
• */
• // Pin 13 has an LED connected on most Arduino boards.
• // give it a name:
• int led = 7;
• // the setup routine runs once when you press reset:
• void setup() {
•   // initialize the digital pin as an output.
•   pinMode(led, OUTPUT);
• }
• // the loop routine runs over and over again forever:
• void loop() {
•   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);               // wait for a second
• }
• 
  

风缘

{:soso_e100:}

youyou

不科学呀，再下载一遍试试吧

新月

插在接口7要串一220的电阻吧。

leozcr

有个330的电阻