[Cialug] Raspberry Pi 3

[Dave Hala]

What would be a really cool application is if your PI read your
license plate and opened the door.


:) Dave

On Mon, Feb 29, 2016 at 5:49 PM, Jeffrey Ollie <jeff at ocjtech.us> wrote:
> On Mon, Feb 29, 2016 at 4:49 PM, Justin Richeson <neomatrixjr at gmail.com>
> wrote:
>
>> If you ever get this working to control your door I'd be interested in how
>> you set it up.  I'm planning to do something similar with some connected
>> board (was going to use my C.H.I.P possibly).  I was looking around and I
>> found most circuits use a relay, but one just used a transistor I believe.
>> I was hoping to do that, but I also can't seem to find good information on
>> exactly how to control the opener.  2 wires run to the "button" in the
>> garage, but somehow it controls a lock function, the light, and the door.
>> I'm not sure what it does to do all that, and I haven't found a good
>> resource for info or time to try to sort it out for myself.  I was also
>> trying to figure out if there's any way to vamp power off the opener's
>> connectors anywhere....  Would be very interested in how you set yours up.
>>
>
> Newer openers might be fancier, but mine just has two contacts that will
> trigger the door when shorted.  When I took apart the wired controller for
> my door it looks as if I put around 200 ohms of resistance into the circuit
> when I short the contacts it will turn on the light rather than open the
> door but I haven't had a chance to test.  I'm waiting for a free weekend
> when it's a bit warmer to try and hook all this up.
>
> I haven't tested the voltage that's on the contacts, but it's probably low
> voltage AC so not very suitable for powering anything else (easily at
> least).  The electrical socket that my door opener is plugged into has an
> open space so I'm just going to plug my Pi into that.
>
> On Mon, Feb 29, 2016 at 11:53 AM, Jeffrey Ollie <jeff at ocjtech.us> wrote:
>>
>> >
>> > [...] one is monitoring the temperature
>> > in my detached garage and will eventually control my garage door opener.
>> >
>> > I did get a Pi3 ordered (MCM limits you to one) but I have no idea when
>> > it'll ship.
>> >
>> > --
>> > Jeff Ollie
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>
>
> --
> Jeff Ollie
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