On Friday 22 January 2021 14:37:56 andy pugh wrote: > On Fri, 22 Jan 2021 at 18:41, Gene Heskett <ghesk...@shentel.net> wrote: > > What comparison can be made between the very limited, fixed scale > > A-D conversion of a mesa card's 1st 4 inputs on say a 7i76, and the > > A/D speed and scaling that $4 pico-pi might be able to do when > > running the STMBL code, and how fast could it do it? > > If you want lots of high resolution A to D, have a look for ADS1256 > boards on eBay.
That's a sweet price for that much precision, and 30ksps sounds like its plenty fast enough to run a servo feedback from precision pots. Good thing about the precision being 24 bits, as the max of 3 volts full scale says it will need scaled at the inputs to live with 5 volt or higher circuits. With an SPI interface, working that out to cohabit with a 7i90 looks to be an interesting project. And I just ordered a 4 channel digital scope so I can see this stuff better. A 2GS input gets pricey though. Thanks Andy. Cheers, Gene Heskett -- "There are four boxes to be used in defense of liberty: soap, ballot, jury, and ammo. Please use in that order." -Ed Howdershelt (Author) If we desire respect for the law, we must first make the law respectable. - Louis D. Brandeis Genes Web page <http://geneslinuxbox.net:6309/gene> _______________________________________________ Emc-users mailing list Emc-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/emc-users
