Thanks Ytai, I connected the other pins to a valid signal and the readings are correct.
Op zondag 9 maart 2014 20:37:19 UTC+1 schreef Ytai: > > What are the "ghost" pins connected to? If you just left them floating > this is not surprising and the readings are probably legit measurements of > the pin voltage. > > > On Sun, Mar 9, 2014 at 10:44 AM, Dave Wauben <[email protected]<javascript:> > > wrote: > >> Hi @ all, >> >> >> >> I am trying to measure on multiple analog inputs a voltage, however I >> noticed some strange behaviour… If 1 volt (DC) is applied to e.g. pin 35 I >> see a “ghost” signal on other pins (see attached pictures). On different >> pins, I get different “ghost” signals. >> >> >> >> If no voltage is applied on any pin, I still get signal on pin 35 and 36. >> I checked for a short-circuit, but I measure between all analog pins about >> the same resistance (1500 Ω). On my second IOIO OTG board, I measure the >> same resistance… so I don’t expect a hardware failure, or should I? >> >> >> >> I read about a firmware fix : >> >> *Application V3.24 (App-IOIO0324)* >> >> · Fixed a bug with analog input occasionally giving bogus >> samples. >> >> >> >> So I flashed to the latest stable firmware V4.00 as I was still on V3.00, >> but I still get the same „ghost” signals. When using the diagnostics tool >> from Art Hare I get the same response. >> >> >> >> >> https://play.google.com/store/apps/details?id=com.artsoft.IOIODiagnostics&hl=nl >> >> >> >> All pictures attached are from Art Hare diagnostic tool. >> >> >> >> Does someone know what I am missing? Is it still the hardware? Could I >> have two faulty boards? Did someone else had the same problem before? >> >> >> >> I am using: >> >> IOIO : IOIO OTG >> >> Hardware version : SPRK0020 >> >> Bootloader version : IOIO0400 >> >> Platform version : IOIO0400 >> >> >> >> Cheers, >> >> Dave >> >> -- >> You received this message because you are subscribed to the Google Groups >> "ioio-users" group. >> To unsubscribe from this group and stop receiving emails from it, send an >> email to [email protected] <javascript:>. >> To post to this group, send email to [email protected]<javascript:> >> . >> Visit this group at http://groups.google.com/group/ioio-users. >> For more options, visit https://groups.google.com/d/optout. >> > > -- You received this message because you are subscribed to the Google Groups "ioio-users" group. To unsubscribe from this group and stop receiving emails from it, send an email to [email protected]. To post to this group, send email to [email protected]. Visit this group at http://groups.google.com/group/ioio-users. For more options, visit https://groups.google.com/d/optout.
