On Saturday 21 November 2020 04:09:24 andrew beck wrote: > ok just did some more testing > > I have two 7i76 cards connected up now and everything works (using > second connector on 5i25 for extra 7i76) > > I am wondering if I have broken the 7i77 I have which I ran 5v > backwards through. > > is this possible to do and if it is would I expect a communication > error as a result of it?
Yes, and yes. Particularly if the supply is a stout one. A 5 volt 5 amp like I run my rpi4 with worries me as it can destroy quite a bit of stuff. I use 12 volt field power but those switchers go into overload shut down at about 2 amps. Even that is enough to cook things if something goes aglay. > If I have broken it that would be a bit sad haha Considering the cost of a 7i77, I'd terminate the above with a frownie. [...] Cheers Andrew, 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
