Hooked up a max 1270 12 bit ad to the SPI pins of a ESP 8266 last night . Used the max 1270 arduino library that can be found by searching google . The max 1270 is a easy solution since it is single 5 volt supply , 12 bit , 8 channel with wide range bipolar 10 volt input capability . I know the ESP 8266 is only 3 . 3 v input io but seems to handle 5 volt just fine . Not to worried if it blows since I have a few wifi modules anyway . Many are reporting no issues with 5 volt input signaling so I don ' t expect a problem here . Remote data collection is much easier now with upload to ThingSpeak . com . The Esp 8266 Arduino SPI library works well . Used a logic analyzer to view SPI timing and all looks good . <| sep |> Same here , put do not leave with neighbour , they left with neighbour , neighbour OK just talks for years and years