2014-07-27 17:20 GMT+02:00 Luke Kenneth Casson Leighton lkcl@lkcl.net:
ok so the MCP3004 is an SPI-based 10-bit ADC 4 channel, $1.50 in 5k volume, 200k-samples/sec, that's possibly waay more than you need? it's popular on adafruit and other places
MCP3004 and MCP3008 (we need 6 ADCs) seem a good choice. There are also many examples of code for Raspberry (easier to program).