[Cialug] Raspberry Pi 3

[Will]

If anyone wants something without the built in WiFi for a better performing
board, check out the odroid xu4 or the brand new C2. As someone that has
way more boards at my disposal than most people working with Arch Linux
ARM, I cannot say much about the pi's other than how cheap they are.

-William
On Mar 1, 2016 07:06, "Dave Weis" <djweis at sjdjweis.com> wrote:

> That makes sense. Mine appears to be identical to that one just twice as
> large.
>
> Thank you
> dave
>
>
>
>
> On Mon, Feb 29, 2016 at 9:08 PM, Jeffrey Ollie <jeff at ocjtech.us> wrote:
>
> > The relays need 5v and quite a bit of amperage to actuate.  The Raspberry
> > Pi's GPIO pins operate at 3.3v and can't deliver much current, but that's
> > enough to drive the optoisolators that ultimately trigger the relays.
> The
> > jumper on the right should be removed and provided 5v power on the JD-VCC
> > pin from a separate (constant) source.  The GPIO pins are then connected
> to
> > the IN1 & IN2.
> >
> > This diagram shows approximately how I have my RPi hooked up:
> >
> >
> >
> https://camo.githubusercontent.com/1afa45cb01b8bb7bed965bd2d4ff4d6e0d2a60ba/687474703a2f2f692e696d6775722e636f6d2f59516a4f7875592e706e67
> >
> > On Mon, Feb 29, 2016 at 8:52 PM, Dave Weis <djweis at sjdjweis.com> wrote:
> >
> > > What does the jumper on the right do? I bought a knock off 4 relay
> > version
> > > and was worried to move it.
> > > On Feb 29, 2016 8:39 PM, "Jeffrey Ollie" <jeff at ocjtech.us> wrote:
> > >
> > > > On Mon, Feb 29, 2016 at 7:53 PM, Zachary Kotlarek <zach at kotlarek.com
> >
> > > > wrote:
> > > >
> > > > >
> > > > > If you’re confident you garage door will never put out something
> > > harmful
> > > > > on the signaling line you can interface it using a fairly simple
> > > > > transistor-based circuit. But you shouldn’t. Those 3.3v electronics
> > are
> > > > > sensitive and a relay that will protect you is cheap. You can get
> > > > > solid-state relays that will trigger directly on logical-level
> > outputs
> > > > from
> > > > > the Pi and get both simple circuit design/construction and lots of
> > > > > isolation.
> > > > >
> > > >
> > > > This is the relay I'm using:
> > > >
> > > > http://smile.amazon.com/dp/B0057OC6D8
> > > >
> > > > --
> > > > Jeff Ollie
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> >
> >
> >
> > --
> > Jeff Ollie
> > _______________________________________________
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