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Digital Output

DigitalWrite command will be use to activate this operations.

In this experiment we will blink led using digitalwrite

Target units that can be interfaced​

VOLTAGE LEVELS​

  • 2V-3.3V - HIGH LOGIC LEVEL
  • 0V-0.8V- LOW LOGIC LEVEL

WHAT IS AN LED?​

Resistor Selection​

EXERCISE​

  • To make the LED blink at different rates

HARDWARE​

SOFTWARE​

Digital Operations
void setup() {
  // initialize digital pin 2 as an output.
  pinMode(2, OUTPUT);
}

// the loop function runs over and over again forever
void loop() {
  digitalWrite(2, HIGH);   // turn the LED on (HIGH is the voltage level)
  delay(1000);                       // wait for a second
  digitalWrite(2, LOW);    // turn the LED off by making the voltage LOW
  delay(1000);                       // wait for a second
}