Make something of your ideas.

#include <Arduino.h>

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
}

void loop() {
  digitalWrite(LED_BUILTIN, HIGH);
  delay(500);
  digitalWrite(LED_BUILTIN, LOW);
  delay(500);
}

#include <Arduino.h>

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  static unsigned long n = 0;
  n += 1;

  digitalWrite(LED_BUILTIN, HIGH);
  Serial.print("pico ");
  Serial.println(n);

#include <Arduino.h>

void setup() {
  pinMode(2, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  static unsigned long n = 0;
  n += 1;

  digitalWrite(2, HIGH);
  Serial.print("esp32 ");
  Serial.println(n);

#include <Arduino.h>

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(9600);
}

void loop() {
  static unsigned long n = 0;
  n += 1;

  digitalWrite(LED_BUILTIN, HIGH);
  Serial.print("uno ");
  Serial.println(n);

#include <Arduino.h>

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  static unsigned long n = 0;
  n += 1;

  digitalWrite(LED_BUILTIN, HIGH);
  Serial.print("microbit ");
  Serial.println(n);

#include <Arduino.h>

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  static unsigned long n = 0;
  n += 1;

  digitalWrite(LED_BUILTIN, HIGH);
  Serial.print("pico2w ");
  Serial.println(n);

#include <Arduino.h>

void setup() {
  pinMode(LED_BUILTIN, OUTPUT);
  Serial.begin(115200);
}

void loop() {
  static unsigned long n = 0;
  n += 1;

  digitalWrite(LED_BUILTIN, HIGH);
  Serial.print("microbit-v1 ");
  Serial.println(n);