[ale] My Raspberry π is here

[Ron Frazier (ALE)]

Here are some good sources for various sensors.  Not specific to pi.

https://www.sparkfun.com/categories/23
http://www.parallax.com/Store/Sensors/tabid/86/Default.aspx

Ron



"Michael H. Warfield" <mhw at wittsend.com> wrote:

>Following on (and stoking the fires of) the discussion from several
>days
>ago...
>
>On Wed, 2012-10-17 at 15:51 -0400, Michael H. Warfield wrote:
>
>...
>
>> > Doh!  What am I thinking.  You don't even need to plug the keyboard
>and
>> > mouse into RP.  You don't want his (the real) keyboard doing that. 
>You
>> > just want the RP acting as an additional keyboard and mouse.  You
>just
>> > need that host mode KM emulation.
>
>> It's also NOT host mode.  It would be client mode.  But you still
>need
>> to do the emulation and it looks like it has been done (with some
>> hardware though I have to look at it closer to understand why).
>
>>
>http://dangerousprototypes.com/2012/07/13/nehebkau-laptop-controlled-keyboard-and-mouse-emulator/
>
>> Might also be possible using the bit bangers on the GPIO but that's
>way
>> more complex than what I want to contemplate.
>
>As discussed at Melton's after the LAST meeting, this is not possible
>with the USB on the Model B's (I have a shipping date for my 2 now!
>Yea!).  Possible with the big-banger ports but not really worth the
>effort.  Not possible with the built-in USB due to the hub on the
>board.
>But it IS possible with the Raspberry Pi Ala Mode (Raspberry Pi married
>with an Arduino shield).  That's looking real tempting given all the
>shields available for relays and ADCs and all.
>
>I'm seeing even more stuff that would be appropriate for my other straw
>man hobby project, the home power line monitor / analyzer (PLA).
>Looking for stuff for the Ardunio, I stumbled onto some current pickups
>that are dirt cheap.  Would require 3 for a home unit (Hot 1, Hot 2,
>and
>Neutral)...  Still...  I'd probably buy a couple of extras just for
>clamping onto suspect circuits out of the breaker panel...
>
>http://www.amazon.com/013-030-Output-Non-invasive-Current-Transformer/dp/B005CTWE8A/ref=pd_sim_pc_80
>
>That one is only good to 30A.  For the mains (I have 200A mains) I may
>need something more like this for hot 1&2...
>
>http://www.amazon.com/0-01-120A-0-5M-Split-core-Current-Transformer/dp/B005FIFT4E/ref=pd_cp_e_0
>
>Those are rated to 120A which would probably suffice for a 200A panel.
>
>OTOH...  These babies will handle 5A to 200A (full capacity) and output
>to .3VAC which is perfect for an audio input...
>
>http://www.amazon.com/Gino-5A-200A-Current-Inductor-Transformer/dp/B006Z4J9QQ/ref=pd_sim_sbs_e_3
>
>Let's see...  2 of the 200A and 3 or 4 of the 30A.  This could work...
>
>With relay boards, now I'm thinking of irrigation systems.  My yard and
>deck are hooked for multiple circuits of drip irrigation and I would
>love to replace the shitty timers with a device like this.
>
>That's now three projects (IP KVM, PLA, and relay controller) I want to
>explore and play with now...
>
>Regards,
>Mike


--

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Ron Frazier
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