[raspberry-vi] Re: introduction
- From: "Michael A. Ray" <mike.ray@xxxxxxxxxxxxxx>
- To: raspberry-vi@xxxxxxxxxxxxx
- Date: Fri, 22 Mar 2013 18:23:51 +0000
Hello Jason,
I bought a device called an 'Adafruit Cobbler' to plug into the GPIO
bus. This consists of a ribbon cable about a foot long with a double
header plug at either end. One end plugs into the GPIO header on the
Raspi, and at the other end there is a little PCB assembly that spreads
the two rows of pins further apart so that they plug into a breadboard
in such a way that they bridge the central divide.
In this way you then have two distinct halve of breadboard into which to
push components. I find this works very well as I am able to count
along the breadboard holes and make sure I have components pushed into
the right place, and do continuity and resistance tests before I connect
to the Raspi.
I have a half watt one hundred ohm resistor plugged in series with one
of the 3.3 volt pins, and from the outer end of this resistor I connect
ten kilohm pull-up resistors to the GPIO pins I want to use as inputs.
Then a 470 ohm resistor to each of the chosen GPIO inputs to a
push-to-make switch to ground completes the configuration of an input
that will be pulled low when the button is pressed.
Mike
On 22/03/2013 18:11, Jason Fayre wrote:
> Hi Michael,
>
> What are you using with the GPIO pins? This is something I've been
> interested to play with.
> On 3/22/2013 2:09 PM, Michael A. Ray wrote:
>> Hello Jason,
>>
>> Welcome to the list.
>>
>> If you didn't find the list via the web site take a look at:
>>
>> http://www.raspberryvi.org/
>>
>> There's not a lot there yet but we've made a start.
>>
>> The list is quiet at times but there are bursts of activity.
>>
>> So far none of us have succeeded in getting any screen-readers up and
>> running and stable enough to publish the results but we are working on it.
>>
>> I've done one or two things of interest; including streaming internet
>> radio. I'm also working on interfacing to the GPIO (carefully) and one
>> or two other things.
>>
>> Mike
>>
>>
>> On 22/03/2013 16:09, Jason Fayre wrote:
>>> Hello,
>>> My name is Jason Fayre. I've been using Linux for several years and was
>>> one of the first if not the first blind person to obtain a Redhat
>>> certified engineer certification. That was back in 2001, but I still
>>> dabble in linux whenever I can.I just discovered this list. I currently
>>> own a Raspberry Pi model B. To be honest, I haven't done much with it
>>> yet. This is mainly due to lack of time. I will most likely be using
>>> it as a PBX server with asterisk.
>>> I look forward to hearing what others have done or are doing with theirs.
>>>
>>> ===========================================================
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>>> Administrative contact: <mike.ray@xxxxxxxxxxxxxx>
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>>> Raspberry Pi and the Raspberry Pi logo are trademarks of the Raspberry Pi
>>> Foundation.
>>>
>>> This list is not affiliated to the Raspberry Pi Foundation and the views
>>> and attitudes expressed by the subscribers to this list do not reflect
>>> those of the Foundation.
>>>
>>> Mike Ray, list creator, January 2013
>>>
>>>
>
> ===========================================================
> The raspberry-vi mailing list
> Archives: //www.freelists.org/archives/raspberry-vi
> Administrative contact: <mike.ray@xxxxxxxxxxxxxx>
> -----------------------------------------------------------
> Raspberry Pi and the Raspberry Pi logo are trademarks of the Raspberry Pi
> Foundation.
>
> This list is not affiliated to the Raspberry Pi Foundation and the views and
> attitudes expressed by the subscribers to this list do not reflect those of
> the Foundation.
>
> Mike Ray, list creator, January 2013
>
>
--
Michael A. Ray
Analyst/Programmer
Witley, Surrey, South-east UK
github username: cromarty
raspberrypi.org username: cromarty
Ham Radio Call-sign: G4XBF, licensed since 1982
'Entia non sunt multiplicanda praeter necessitatem' - Ockham's razor
Raspberry VI:
http://www.raspberryvi.org/
NVDA, the best free screen-reader in the world:
http://www.nvda-project.org/
===========================================================
The raspberry-vi mailing list
Archives: //www.freelists.org/archives/raspberry-vi
Administrative contact: <mike.ray@xxxxxxxxxxxxxx>
-----------------------------------------------------------
Raspberry Pi and the Raspberry Pi logo are trademarks of the Raspberry Pi
Foundation.
This list is not affiliated to the Raspberry Pi Foundation and the views and
attitudes expressed by the subscribers to this list do not reflect those of the
Foundation.
Mike Ray, list creator, January 2013
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