 on GP12
         scl: 13,   // SCL on GP13
      },
   }
</pre>
   

<h3>Supported add-on chips</h3>

<ul>
   <li><a href="JSONConfigRef.htm#74hc165">74HC165 (input shift register)</a>
   <li><a href="JSONConfigRef.htm#74hc595">74HC595 (output shift register)</a>
   <li><a href="JSONConfigRef.htm#ads1115">ADS1115 (ADC)</a>
   <li><a href="JSONConfigRef.htm#aedr8300">AEDR-8300 (linear quadrature encoder - plunger)</a>
   <li><a href="JSONConfigRef.htm#lis3dh">LIS3DH (accelerometer)</a>
   <li><a href="JSONC