Thanks...I finally understand. The OTG charging circuit is better. I don't know why the pot doesn't burn up in the V1 version. It seems that even minimum charging current will exceed the power rating of the pot.
On Wednesday, September 23, 2015 at 10:05:31 AM UTC-7, Ytai wrote: > > The pot circuit has been introduced to allow limiting the charging current > to the Android, mostly in battery-powered applications, where you don't > want the Android to drain the main battery. Some Androids take is less well > than others, in terms of compromising the connection reliability. > > On Tue, Sep 22, 2015 at 8:54 PM, Vic Wintriss <[email protected] > <javascript:>> wrote: > >> >> When using the ioio board with an Android phone, why do we need a pot? >> Why not just connect the vbus to 5v? >> >> On Thursday, May 17, 2012 at 6:31:55 AM UTC-7, jparkernr wrote: >>> >>> The trimpot on my IOIO just spins around with no stops and none of the >>> IOIO sample programs work to turn on the LED. I've powered the IOIO with a >>> 9v battery and with a dedicated power supply. I can get the charge >>> indicator on the Galaxy Tab 7 I'm using to show if I play with the trimpot, >>> but it very sensitive and doesn't remain on. If I use a BT USB, will I >>> still need ot adjust the trimpot? >>> >> -- >> 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.
