 class="line"><a name="l00031"></a><span class="lineno">   31</span>&#160;            pinMode(SENSOR_PIN, INPUT);        <span class="comment">// turn pin into an input and time till pin goes low</span></div><div class="line"><a name="l00032"></a><span class="lineno">   32</span>&#160;            digitalWrite(SENSOR_PIN, LOW);     <span class="comment">// turn pullups off - or it won&#39;t work</span></div><div class="line"><a name="l00033"></a><span class="lineno">   33</span>&#160;            rc_cued = <s