[Cialug] Raspberry Pi HDMI issue

[David Champion]

Thanks for the tip.

My "heavy duty" Pi 2 wall wart is 5v 2a, will try a 2.5a or higher one.

-dc

On Thu, Sep 29, 2016 at 12:37 PM, Dan Hockey <icepuck2k at gmail.com> wrote:

> Put a volt meter on one of 5v pins on the gpio. The problem I ran into with
> my first pi 3 was that when hooked up to the 7" touch screen the usb ports
> and wifi would shut off. If the 5v line dropped below 4.8v during boot up
> even if it for less a second the usb and wifi would shutdown and not come
> back even after a successful boot up.
> I used a usb power meter to test my usb wall warts and found that some
> would not supply 5v, and when using a bad cable made things even worse.
>
> On Thu, Sep 29, 2016 at 10:44 AM, David Champion <dchamp1337 at gmail.com>
> wrote:
>
> > I just got a pi 3 and it shows the rainbow screen even with the higher
> amp
> > adapter that came with my adafruit pi 2 kit. May need something more
> > potent.
> >
> > -dc
> >
> > On Sep 29, 2016 10:14 AM, "L. V. Lammert" <lvl at omnitec.net> wrote:
> >
> > > On Thu, 29 Sep 2016, Dan Hockey wrote:
> > >
> > > > There will be a rainbow colored square in the upper right corner of
> the
> > > > display if your voltage is below 4.9 volts.
> > > >
> > > Have not seen that, .. guess I'll have to write a shell script to kill
> > > raspistill if the system can't ping a remote host.
> > >
> > >         Thanks!
> > >
> > >         Lee
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