//Objective : Simulating an LED toggle light with Raspberry pi microcontroller .
//Material Required : LED light, Raspberry pi pico board, connecting wires.

#define RED 5
void setup()
{
    pinMode(RED, OUTPUT);
    Serial1.begin(1);
    Serial1.println("Hello, This is my first program!");
}
void loop()
{
    digitalWrite(RED, LOW);
    delay(400);// wait for 4 milliseconds
    digitalWrite(RED, HIGH);
}