====== Capteur lumière analyse des couleurs TCS230 TCS3200 ======
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doc de ci de la:
  * https://www.dfrobot.com/wiki/index.php?title=TCS3200_Color_Sensor_%28SKU:SEN0101%29
  * https://www.raspberrypi.org/forums/viewtopic.php?f=37&t=113235
  * http://abyz.co.uk/rpi/pigpio/examples.html TCS3200 Colour Sensor