1. 2 leds
2. 2 resistances
3. la soudure
4. la gaine thermo
5. 1 mini interrupteurs

2 leds sur Tinkercad

ledclignote.ino

// C++ code
//
void setup()
{
  pinMode(5, OUTPUT);
}
 
void loop()
{
  analogWrite(5, 1);
  delay(1000); // Wait for 1000 millisecond(s)
  analogWrite(5, 0);
  delay(1000); // Wait for 1000 millisecond(s)
}