Adruino basic experimental learning (I)

Wireless sensors （ One ）

Led Small lamp experiment

Specific devices ：

1. Direct insertion LED *1
2. 220Ω In line resistor *1
3. Breadboard
4. DuPont line Two males at two ends

The following figure for arduino Wiring schematic diagram of small lamp experiment

LED Long feet are positive , The short leg is negative

Resistance is used to limit current

int pin=10;// Define numbers 10 Interface 
void setup() {
    
  // initialize digital pin LED_BUILTIN as an output.
  pinMode(pin, OUTPUT);// Define the small lamp interface as the output interface 
}

// the loop function runs over and over again forever
void loop() {
    
  digitalWrite(pin, HIGH);   //  Light up the small lamp at high level 
  delay(5000);                       //  Time delay 
  digitalWrite(pin, LOW);    //  Low level off small lamp 
  delay(1000);                       //  Time delay