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]> 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]. > 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. > -- 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.
