I powered the board directly using 5V and the red light is on. However when connected to Android phone (with red cable and usb debugging off) the HelloIOIO app cannot connect to the IOIO (which it did initially before firmware upgrade). When connected to PC, the IOIODude detects now application mode with V3 version. I tried the switch host/android mode with no difference, so what to do next ? Is it possible that when USB cable was connected to PC, this somehow damaged the VREG ? Because all this stuff started when trying to upgrade the firmware.
perjantai, 22. elokuuta 2014 21.41.01 UTC+3 Ytai kirjoitti: > > On Thu, Aug 21, 2014 at 11:50 PM, <[email protected] <javascript:>> > wrote: > >> Thank you for your response, I will try to replace the VREG. Does this >> mean that if I take TPS62130 away, I can power the board directly using 5V >> pin (with 5V power source) ? >> > > Yes. It is very likely that you can do that even without removing the > TPS62130. Just try and see whether you see any excessive current draw on > your source and/or something overheating on the IOIO in the VREG area. > > >> I think that firmware upgrade is ok, but I cannot verify it, because PC >> cannot communicate with V3 or V5 firmware, only with bootloader. I am using >> Windows 7, with necessary drivers. >> > > There were previously reports on problems related to the USBID pin, which > might explain this. I will look into this, and this is likely a simple > firmware fix, but this will probably not happen within the next two weeks > or so. In the meantime, if you feel comfortable enough messing with > hardware, you can locate where this signal is exposed on the board (hint: > one of the legs of the host mode switch has it) and force it to 3.3V. In > this condition, if the IOIO becomes visible to the PC in application mode, > then we verified that this is indeed the problem. > > >> Initially I tried to use Windows 8.1, but it does not recognize IOIO, not >> even in the bootloader mode, >> >> > -- 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.
