http://nagashur.com/blog/2013/01/13/lire-des-entrees-analogiques-sur-un-raspberry-avec-un-circuit-adc-le-mcp3008/
MagPi24.pdf https://github.com/digibird1/RPiScope
http://www.peteronion.org.uk/I2S/
http://www.framboise314.fr/oscilloscope-et-analyseur-logique-sur-raspberry-pi/ https://github.com/Velleman/VM205
http://bitscope.com/pi/
https://digibird1.wordpress.com/breakout-board-for-the-dac900e-a-165-msps-10-bit-dac/