Working ... with an external ADC. We need to test beforehands.
- https://www.raspberrypi.org/documentation/hardware/raspberrypi/spi/README.md
- https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=130616
- https://www.raspberrypi.org/forums/viewtopic.php?f=107&t=132494
- https://www.raspberrypi.org/forums/viewtopic.php?f=44&t=43442&p=347073
- http://richardhayler.blogspot.fr/2016/02/getting-started-with-esp8266-iot-phat.html
- http://bobdavis321.blogspot.fr/2013/06/arduino-powered-3-million-samples-per.html
- https://www.hackster.io/taifur/piscope-raspberry-pi-based-oscilloscope-01b6bb (modif kernel https://www.hackster.io/taifur/piscope-raspberry-pi-based-oscilloscope-01b6bb )
- Excellent resources : http://www.instructables.com/id/PiScope-Raspberry-Pi-based-Oscilloscope/
- CA3306 -- 6 bits, up to 15Msps
- http://www.newark.com/analog-devices/ad7822bnz/analog-to-digital-converter-adc/dp/59K5579?aa=true&ost=adc&selectedCategoryId=&categoryId=800000004755&iscrfnonsku=false
- ANALOG DEVICES AD7822BNZ Analog to Digital Converter, 8 bit, 2 MSPS, 4.5 V, 5.5 V, DIP