p>To set an output pin high (3.3V) or low (0V), use <code>digitalWrite(pin, value);</code> where <code>pin</code> is the digital pin, and <code>value</code> either 1 or 0 (or <code>HIGH</code> and <code>LOW</code>).</p>
   <p>To read an input, use <code>digitalRead(pin);</code></p>
   <p>To enable PWM on a certain pin, use <code>analogWrite(pin, value);</code> where <code>pin</code> is the digital pin, and <code>value</code> a number between 0 and 1023.</p>
   <p>You can change the range (bit depth) of the 