I've heard that Nexus 4 doesn't support powering USB host, but you may be able to use a powered USB hub inbetween the two.
My Nexus 5 and 7 - 2012 both support it. On Wed, Nov 19, 2014 at 9:36 PM, Mark Melvin <[email protected]> wrote: > Thanks. The Xoom does not have a micro A connector, so i guess it doesn't > support it. It looks like the Nexus 7 supports it, and I'll try my wife's > Nexus 4 and report back. If anyone has confirmed operation on any other > Nexus device, particularly the Nexus 5, I'd love to hear about it. > > Thanks, > Mark > > > On 10:30pm, Tue, Nov 18, 2014 Ytai Ben-Tsvi <[email protected]> wrote: > >> I haven't yet written a wiki page about it. >> >> In short: >> >> 1. Some Android devices support being the USB host, some don't. >> 2. When connecting such a device to the IOIO, the USB cable itself >> determines who will be the host (the "A" side of the cable) and who will >> be >> the device (the "B" side). >> 3. The OTG adapter provided with your IOIO may be compatible with >> your Android. If so, having the adapter on the Android side will cause it >> to become host. Some Android devices don't accept the micro-A connector >> despite supporting host mode. For those, you'd need to buy a very similar >> cable to the adapter cable, only with a (non-standard) micro-B connector >> on >> the male side. >> 4. Regardless of software / firmware / anything else, if you are able >> to get the red power LED on the IOIO to turn on without external power >> supply, you're probably good to go and any problems you might have can >> probably be sorted out with following the right steps in building the >> Android app. Otherwise, the tablet may not support host mode, or you're >> doing something wrong with the connection. >> >> >> On Tue, Nov 18, 2014 at 7:21 AM, Mark Melvin <[email protected]> >> wrote: >> >>> Hi All, >>> >>> I just found out about this: >>> >>> https://www.youtube.com/watch?v=8CYsGg9q-Y4&feature=share >>> >>> And it looks like this is now in the main code base. But I can't get >>> this to work with my old Motorola Xoom. I have a couple questions: >>> >>> 1) Is there wiki page documenting how to make this work (do I need a >>> special cable)? I could not find one. >>> 2) I am assuming not all devices support this. That's fine, I am >>> willing to buy a Nexus 7 or whatever I need to buy to get this feature. Is >>> there a list of devices somwhere that do support this? Would the Nexus 5, >>> for instance? >>> >>> Thanks in advance, >>> Mark. >>> >>> -- >>> 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. >> > -- > 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.
