Q1's gate is at 5V, so it's doing what it should and I don't think you have any reason to assume it's broken. Measure the drain and gate of Q2 as well as the USBID net to figure out what's wrong. On Feb 13, 2014 9:52 AM, "fabrio pellegrinetti" <[email protected]> wrote:
> Yes I know > This problem persist independently to the selector is on automatic or host > mode. > I have 3 other ioio otg board only one has this problem. > > thanks again. > > On Thursday, February 13, 2014 6:19:09 PM UTC+1, Ytai wrote: >> >> The net labeled HOST is controlled in software to enable or disable VBUS >> based on whether the IOIO needs to act as host or device. It'll switch to >> host mode and apply VBUS whenever you plug in a compliant "A" plug to the >> USB jack OR if the host selection switch is in the "H" position. >> On Feb 13, 2014 9:00 AM, "fabrio pellegrinetti" <[email protected]> wrote: >> >>> Because when I attach a device to the ioio not recognize it, and do not >>> charge. >>> Initially I thought it was the fault of the fuse, but after checking >>> with a voltmeter, I found that the ends of the fuse voltage is 0 volts >>> independently of the position of the potentiometer of charge, and not only >>> them. >>> >>> below: the measures that I have done >>> >>> >>> <https://lh3.googleusercontent.com/-dPbHuJ-St_o/Uvz57_VXc5I/AAAAAAAAAow/cHLBEKNkLuY/s1600/vbus.jpg> >>> below: the measures that I have done >>> >>> On Thursday, February 13, 2014 5:01:03 PM UTC+1, Ytai wrote: >>>> >>>> Why do you think it's faulty? >>>> On Feb 13, 2014 7:50 AM, "fabrio pellegrinetti" <[email protected]> >>>> wrote: >>>> >>>>> I checked with the voltmeter the ioio, as shown in the figure below. >>>>> I think the FET Q1 is faulty. >>>>> Tips? >>>>> it is possible to replace the FET Q1, and what is its part number? >>>>> And the code of Fuse? >>>>> >>>>> thank. >>>>> >>>>> fabrio >>>>> >>>>> -- >>>>> 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/groups/opt_out. >>>>> >>>> -- >>> 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/groups/opt_out. >>> >> -- > 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/groups/opt_out. > -- 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/groups/opt_out.
