Arduino 範例程式 - LED

Ref: http://arduino.cc/en/Tutorial/Blink


這是一個基礎使用 LED 的範例程式

硬體設備

• Arduino Uno Board
• LED

電路

可以使用軟體 Fritzing 來繪製

(1) 選擇 Arduino Uno Board

(2) 加入 LED 

image developed using Fritzing. For more circuit examples, see the Fritzing project page

和以下的範例電路不同, 我沒有另外增加電阻. 這是因為 Atmel 的 ATmega328P 本身內部已有 pull high 線路.

範例

實際

----------------------------------------------

	const byte LED = 13;
	void setup() {
	pinMode(LED, OUTPUT);
	}
	void loop() {
	digitalWrite(LED, LOW);
	delay(1000);
	digitalWrite(LED, HIGH);
	delay(1000);
	}

view raw led-1 hosted with ❤ by GitHub

----------------------------------------------

執行結果


參考

• setup()
• loop()
• pinMode()
• digitalWrite()
• delay()
• BareMinimum: The bare minimum of code needed to start an Arduino sketch.
• Blink: Turn an LED on and off.
• DigitalReadSerial: Read a switch, print the state out to the Arduino Serial Monitor.
• AnalogReadSerial: Read a potentiometer, print its state out to the Arduino Serial Monitor.
• Fade: Demonstrates the use of analog output to fade an LED.
• ReadAnalogVoltage : Reads an analog input and prints the voltage to the serial monitor