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[on:]

I've been making enable differential input (and also gain enable) on Arduino ADC by add wiring_differential.c into arduino library. I try to recording sinewave with 2 V amplitude (generate from signal generator) without DC offset. It looks like this while i graph it on spreadshet,

Download library and sample from here: http://sekarlangit.com/wp-content/uploads/2013/02/AnalogDiff.tar.gz. Else, download from attachment.

I wrote complete post about this differential input but may it goes wrong for the table (please correct me). Here: http://sekarlangit.com/arduino-differential-gain.php

[Reply #1 on:]

that could come in handy

[Reply #2 on:]

Thanks for sharing!

[Reply #3 on:]

Do analogReadDiff(1,9) and analogReadGain(0,4,8,10,12,14) all measure zero since their V+ and V- are identical?