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Double Blinking LED

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Arduino MEGA 2560 board to drive the color LED

This article is the use of Arduino MEGA 2560 board to drive some of the color LED digital tube.All of the content is edit in the edit in the

Red and green LED cycle

As a beginner, a single LED display has been introduced in the last article, Arduino Mega2560 is the use of USB interface core circuit board, its greatest feature is having up to 54 digital input and output, particularly suitable for the needs of a large number of IO interface design. Previous experiments we have done experiments LED display, has been known to set the input and output in the setup () function inside. Connection as follows:

program code

 void setup() {
  pinMode(13, OUTPUT); // set pin 13 as output
  pinMode(12, OUTPUT); // set pin 12 as output

void loop() {
  digitalWrite(13, HIGH); // set pin 13 as high or 1
  digitalWrite(12, LOW); // set pin 12 as low or 0
  delay(1000); // wait 1000 ms
  digitalWrite(12, HIGH); // set pin 13 as high or 1
  digitalWrite(13, LOW); // set pin 12 as low or 0
  delay(1000); // wait 1000 ms

easyeda schematic open it in the easyeda editer Double Blinking LED esyeda Project


2 simple LED


ID Name Designator Footprint Quantity
1 LED D1,D2 LED3MM 2
2 1k R1,R2 R3 2




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