[nycbug-talk] arm boards

[Steven Kreuzer]

On 9/24/12 9:35 PM, Charles Sprickman wrote:
> On Sep 24, 2012, at 8:46 PM, George Rosamond wrote:
>
>> On 09/21/12 18:21, Sevan / Venture37 wrote:
>>> On 21/09/2012 23:13, George Rosamond wrote:
>>>> Raspberry PI is too much of an issue in acquiring.
>>> I ordered mine from http://www.farnell.com on Tuesday, it was here on
>>> Thursday.
>> The BeagleBoard www site says they will be at MakerFaire this weekend.
>> It certainly is a good chance to discuss some sort of group discount for
>> us, even if they don't sell them directly.
>>
>> What if we structure some sort of 3 hour long workshop?
>>
>> We could provide the useful documentation to enable the preliminary
>> work.  For FreeBSD, there's stuff out there.  People should prep their
>> SD cards at least.
>>
>> A short introduction to get people started would probably be nice.
> You know, I've been interested in this, but one thing I'm not clear
> on (and what's most interesting to me) is what the differences
> between all these units are as far as interfacing with the outside
> world.  Specifically, if I want to control a small servo or
> similar, or tie into a bank of small relays or some such thing,
> what are the options?  Does that mean buying yet another device or
> is there some basic analog I/O on these things?

Both the BeagleBone and Raspberry Pi have general purpose input/output which
are a set of pins which could serve as input or outputhaving logical 0 
and logical 1 as
their values. From there you would be able to interface with external 
peripherals.

If you have a Raspberry Pi you should take a look at the Gertboard which 
is an expansion
board that you can use to easily interface with servos or sensors via gpio.

http://www.raspberrypi.org/archives/tag/gertboard
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