reprocessor">if</span> <a class="code" href="hardware__defines_8h.html#a8457a28987db30ccee75bc12d09409a3">IS_TEENSY3</a><span class="preprocessor">(</span><span class="preprocessor">)</span></div><div class="line"><a name="l00029"></a><span class="lineno">   29</span>&#160;    <span class="keyword">extern</span> ADC *adc; <span class="comment">// adc object</span></div><div class="line"><a name="l00030"></a><span class="lineno">   30</span>&#160;    <span class="keyword">extern</span> uint8_t teensy_pin;</d