Materiales:

• 1 Motor CC.
• 1 Led (el led está para proteger el transistor).
• 1 Resitencia 330 Ohm.
• 1 Transistor 2N2222.

CÓDIGO:

<pre class="EnlighterJSRAW" data-enlighter-language="generic" data-enlighter-theme="" data-enlighter-highlight="" data-enlighter-linenumbers="" data-enlighter-lineoffset="" data-enlighter-title="" data-enlighter-group="">const int control = 9 ;
void setup()
{  
     pinMode(control,  OUTPUT) ;
}
void loop()
    {
         digitalWrite(control, HIGH);
         delay(2000);
         digitalWrite(control, LOW);
         delay(1000);
    }</pre>