功能目标
点灯亮两秒 熄灭1秒 循环往复
接线图
原理图
硬件走线
Arduino IDE 代码
/*
Blink
Turns an LED on for one second, then off for one second, repeatedly.
Most Arduinos have an on-board LED you can control. On the UNO, MEGA and ZERO
it is attached to digital pin 13, on MKR1000 on pin 6. LED_BUILTIN is set to
the correct LED pin independent of which board is used.
If you want to know what pin the on-board LED is connected to on your Arduino
model, check the Technical Specs of your board at:
https://www.arduino.cc/en/Main/Products
modified 8 May 2014
by Scott Fitzgerald
modified 2 Sep 2016
by Arturo Guadalupi
modified 8 Sep 2016
by Colby Newman
This example code is in the public domain.
https://www.arduino.cc/en/Tutorial/BuiltInExamples/Blink
*/
// the setup function runs once when you press reset or power the board
int lightFoot=12;
void setup() {
//初始化数字引脚LED_BUILTIN作为输出。
pinMode(lightFoot, OUTPUT);
Serial. begin(9600);
//初始化串口通讯
}
// the loop function runs over and over again forever
void loop() {
digitalWrite(lightFoot, HIGH); // turn the LED on (HIGH is the voltage level)
delay(2000); // wait for a second
digitalWrite(lightFoot, LOW); // turn the LED off by making the voltage LOW
delay(1000); // wait for a second
}
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