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Caleb Kraft
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so many!
Caleb Kraft   11/5/2013 12:32:42 PM
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My, it sounds like you're going to have a veritible smorgasboard of sensors on board! What the heck are you going to put on this thing? Are you leaving enough space for the kitchen sink?

Max The Magnificent
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Re: so many!
Max The Magnificent   11/6/2013 3:19:07 AM
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@Caleb: Are you leaving enough space for the kitchen sink?

You're the expert here -- do you think I need one? LOL

TonyTib
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Go for flexiblity
TonyTib   11/5/2013 5:18:15 PM
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Hmmm, Cypress' $25 PSCO4 Pioneer Kit has both PMod & Arduino shield connnector - and reconfigurable analog, yay!  OTOH, it's not Arduino software compatible, although IIRC Cypress has some point & click development choices.


Yet another choice is the Papilio FPGA board, which tries to be pretty Arduino compatible, although I'm not sure its as slick as the chipKits, but has the added speed of the ZPUino core (32-bit, 96MHz, large code space) and, of course, FPGA flexiblity.

The chipKit Pi+ RPi combo is pretty affordable, not much more than an Arduino Due.  So many good choices, so little time.


BTW, do you have any links to TI or Maxim PMods?  I tried finding some last week & couldn't.

mgburr
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Re: Go for flexiblity
mgburr   11/5/2013 8:26:40 PM
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Not just the chipKITs, Renesas has a board available in Asia and Europe that could be a pretty serious contender for the *duino compatible crowds.  100MHz 32bit uC with floating point can do some amazing stuff.  The biggest difference is how it access memory etc and trying to get past some of the Harvard arcitecture issues to the hybrid that Renesas has in the RX series MCUs is where most of the stumbling blocks seem to occur.

 

Max The Magnificent
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Re: Go for flexiblity
Max The Magnificent   11/6/2013 3:27:51 AM
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@mgburr: Renesas has a board available in Asia and Europe that could be a pretty serious contender for the *duino compatible crowds.

Hey Mike -- it's great to see you here -- can you email me at max@CliveMaxfield.com to make sure I have your address (I'm working on a new notepad -- the old one "threw a wobbly" :-)

Max The Magnificent
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Re: Go for flexiblity
Max The Magnificent   11/6/2013 3:20:36 AM
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@TonyTib: So many good choices, so little time.

Tell me about it! LOL

Max The Magnificent
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Re: Go for flexiblity
Max The Magnificent   11/6/2013 3:22:28 AM
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@TonyTib: BTW, do you have any links to TI or Maxim PMods?  I tried finding some last week & couldn't.

Not off the top of my head -- I was looking for them myself a little bit ago -- those websites aren's as easy to find things on -- remind me next week when I'm back in the Pleasure Dome (my office) and I'll see what I can do.

 

TonyTib
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Maxim Pmods
TonyTib   11/20/2013 4:15:02 PM
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Here's a link to the Maxim Pmods I found by accident; Maxim page is here.  I still can't find any TI Pmods (other than the Digilent Pmod BoosterPack for Launchpads)

Max The Magnificent
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Re: Maxim Pmods
Max The Magnificent   11/20/2013 5:01:39 PM
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@Tony Tib: Here's a link to the Maxim Pmods I found by accident...

Considering the fact that their Pmod modules are so tasty, it's amazing they are so difficult to find on the Maxim site. If you do find the TI page, please share it with the rest of us :-)

salbayeng
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Re: Maxim Pmods
salbayeng   11/21/2013 4:35:58 AM
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The Pmods are neat, they must have been hiding under a bushel somewhere!

And you could use them with any other development system with simple adapters.

Crusty1
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Re: Maxim Pmods
Crusty1   11/21/2013 4:53:21 AM
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@salbayeng: These Pmods have also been adopted for use with Lattice FPGA development boards, so they can get double the use in development, which means they go further on pocket money accounts.

salbayeng
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Re: Maxim Pmods
salbayeng   11/21/2013 8:00:27 AM
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@Crusty1 .

I've been wanting to make some of my own plug n play modules (like the PMOD's) for automatic testers for small production runs, I've been looking for a standard that others use, and PMOD might just work out.

I can just grab off the shelf ADC and DAC's and  all I then need to make are relay boards and dummy loads. All at a cost point where you could make dedicated test stands for each product you are testing. 

Crusty1
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Re: Maxim Pmods
Crusty1   11/21/2013 9:07:12 AM
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@Salbayeng: This make a lot of sense to use this plugin footprint of the Pmod as astandard for your test equipment for small runs. It might even turn out that the boards you make for testing your small production runs, would be useful to others.

I see no reason why a Pmod should not be programmable in it's own right. Something like an 8 bit uP could be reprogrammed via I2C, SPI, or even it's own port on a Pmod footprint board.

I will be interested to see where you go with this?

TonyTib
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Re: Maxim Pmods
TonyTib   11/21/2013 12:39:51 PM
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The Digilent list is much longer than Maxim's, and includes such tasty items as a dual 12-bit 1MSPS ADC ($35) and a 4 channel 4.8KSPS 24-bit ADC ($35).

There are quite a number of other sensor systems, including TinkerKit, Grove, Gadgetter, Phidgets, and UEXT.  Sometime I'll write a blog post on them, because each has its own niche.  For example, Pmod has much better ADCs, but is typically more expensive than Grove.

BeALert
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Real men work with their ARMs (sometimes their THUMBs).
BeALert   11/6/2013 2:59:53 AM
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You're considering a PIC when you could go for an ARM (Arduino Due)? (Full disclosure - I spurn Microchip like I would spurn a rabid dog (due to religious reasons))

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/6/2013 3:25:18 AM
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@BeALert: You're considering a PIC when you could go for an ARM (Arduino Due)?

From the level of writing C and pressing the "Go" button, do you really care what's under the hood? (Apart from religious reasons :-)

 

BeALert
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Re: Real men work with their ARMs (sometimes their THUMBs).
BeALert   11/6/2013 3:28:39 AM
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I know I shouldn't care.

 

But somehow I do.

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/6/2013 3:35:18 AM
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@BeALert: I know I shouldn't care. But somehow I do.

You are obviously a very caring person (LOL). One thing I do like about Microchip is that they keep on producing DIL packaged parts great for hobbyists).

Also, I have a friend called Joe Farr in the UK who I respect very much. He's like a Microchip Diva -- I've chatted with him in the morning about an idea, and by the afternoon he's designed and built/populated a prototype PCB and prgrammed the on-board PIC to do whatever it was I had in mind.

BeALert
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Re: Real men work with their ARMs (sometimes their THUMBs).
BeALert   11/6/2013 4:04:35 AM
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For a while now I have been considering changing my ways and giving Microchip a chance. The problem is it's difficult to seem cool as an engineer without unsubstantiated bigotry. I've recently been forced to start using 1k, 10k 100k etc resistors instead of 4k7, 47k 470k because surface mount has killed my argument that the 4-7 range of resistors are just so much prettier than any other (though 2k2 and 33k do have very pleasing symmetry).

Maybe I'll just start disliking puppies - it might be easier.

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/6/2013 4:20:30 AM
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@BeALert: ...the 4-7 range of resistors are just so much prettier than any other (though 2k2 and 33k do have very pleasing symmetry)

Did you see my column The Awesome Art of Bodacious Breadboards where I talk about selecting components based on their aesthetic qualities (and others agree)?

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/6/2013 4:27:43 AM
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 @ Be ALe rt  (as they say, your country needs Lerts... :-)

I'm with you about resistors. A PCB with a big DIP processor (40 pin preferably) and some nice colorful R's and C's looks very cool.     You can get tiny cylindrical SMD resistors with the colour code on them but they are difficult to see as they're so small.  I've always wanted to build a Nixie clock in a transparent case, and include a fair number of R's and C's (even though some of them would probably be unnecessary) just for the cool look.

You're probably one of those guys who can read an E12 resistor almost without thinking.  Occasionally you see ones with non-standard values and it's like looking at a word that's spelled wrong (I have some 50Ω ones like that).  1% resistors (5 color bands) are a pain, I don't think I'll ever read them without thinking.

BeALert
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Re: Real men work with their ARMs (sometimes their THUMBs).
BeALert   11/6/2013 4:33:53 AM
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I've always wanted to build a Nixie clock in a transparent case...

I'm hoping you didn't mention that it'll work with valves because that should be obvious.

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/6/2013 4:57:16 AM
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Stop giving me ideas!!  I've got enought to do already :-)

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/6/2013 5:40:54 AM
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@David: I've got enought to do already :-)

Like packing your suitcase for EE Live! 2014 LOL

antedeluvian
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Re: Real men work with their ARMs (sometimes their THUMBs).
antedeluvian   11/6/2013 3:47:36 PM
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David

You're probably one of those guys who can read an E12 resistor almost without thinking.  Occasionally you see ones with non-standard values and it's like looking at a word that's spelled wrong (I have some 50Ω ones like that).  1% resistors (5 color bands) are a pain, I don't think I'll ever read them without thinking.

In my book I descirbe an app in Excel where you can select the number of bands and then select the colours from a drop down list to determine the resistor's value. It would then look at the order and pick out a standard resistor value that suited the left to right or right to left order. (I suppose it would have been flummoxed by the non standard values). 

I also went a bit further (still in Excel) using voice recognition so that you could call out the colours and Excel would then use the same algorithm to determine the value and then "speak" it out loud.

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/6/2013 4:04:38 PM
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@antedeluvian - after I posted that I thought I remembered something like that, and eventually decided it must be in your book....I'm gonna look it up at the weekend (I'm flat out like a lizard drinking right now  :-)

antedeluvian
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Re: Real men work with their ARMs (sometimes their THUMBs).
antedeluvian   11/7/2013 9:23:44 PM
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David

I was at a seminar today where I picked up a gimmick ball point pen from from Digikey which coincidentally had a pull out spring loaded scroll (about 9" x 2") with the resistor colour codes printed on it.

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/7/2013 10:13:41 PM
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@Antedeluvan....just the thing for the engineer who has everything :-)

betajet
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Re: Real men work with their ARMs (sometimes their THUMBs).
betajet   11/6/2013 5:25:30 PM
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antedeluvian wrote: In my book I describe an app in Excel where you can select the number of bands and then select the colours from a drop down list to determine the resistor's value. It would then look at the order and pick out a standard resistor value that suited the left to right or right to left order. (I suppose it would have been flummoxed by the non standard values).

That sounds pretty slow.  What do you do if you have a bunch of loose resistors in a bag and you're trying to find a particular value... or one near that value?

antedeluvian
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Re: Real men work with their ARMs (sometimes their THUMBs).
antedeluvian   11/6/2013 7:58:31 PM
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betajet

That sounds pretty slow.  What do you do if you have a bunch of loose resistors in a bag and you're trying to find a particular value... or one near that value?

How about a DMM?

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/6/2013 8:22:06 PM
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@Antedeluvian, Betajet....I have exactly that problem sometimes - sorting a bunch of resistors I have stripped off boards (yeah, I'm a sad case) and I use a DMM with one of thse tweezer probes you use for SMD components - on small resistors they work fine AND you can just drop them into the right compartment in the box I use for storing them.  Works pretty quick.

But it would be very cool to look at it and say "brown black black red brown" and the computer would say "10K 1%" back to you...

The trouble with 1% resistors is that you have to look twice to make sure you have the bands the right way round.  It's not as obvious as with 5%ers.  And the above example would be a perfectly legal value the wrong way round - - 120Ω 1%...

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/7/2013 4:12:21 AM
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@David: But it would be very cool to look at it and say "brown black black red brown" and the computer would say "10K 1%" back to you...

Even cooler to have a digital camera running a special detection program and you just place the resistor under the lens and it says "10K 1% and it's size looks like 1/4 watt..."

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/7/2013 4:21:43 AM
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@Max.....Right, can you do that with your robot and Pixy camera?

I've been doing some optical fibre splicing the past few days.  THOSE machines are clever.  They align the fibres, tell you if there's any dirt on them or if they are chipped or cut at the wrong angle, then they fuse them and tell you what the splice loss is.  All while showing you what they're doing on a little LCD screen.  Awesome application of technology.

BTW you're messing with my mind posting in my evening like this.  I'm used to you posting in my morning.  but I'm glad it's you in the different time zone, not me :-)

 

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/7/2013 4:28:19 AM
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@David: Right, can you do that with your robot and Pixy camera?

I might be able to if I can catch it :-)

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/7/2013 4:29:11 AM
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@David: I've been doing some optical fibre splicing the past few days.

I've never played with one of these, but they sound very interesting.

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/7/2013 4:30:05 AM
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@David: ...you're messing with my mind posting in my evening like this.

It's just one extra service I provide for free (LOL)

Garcia-Lasheras
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Re: Real men work with their ARMs (sometimes their THUMBs).
Garcia-Lasheras   11/7/2013 4:34:58 AM
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@David: "I'm used to you posting in my morning"

I'm sorry for Australian people, but in Europe we are enjoying of having Max in England time zone for a while ;-)

Max The Magnificent
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Re: Real men work with their ARMs (sometimes their THUMBs).
Max The Magnificent   11/7/2013 5:19:46 AM
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@Garcia: ...in Europe we are enjoying of having Max in England time zone for a while ;-)

The radience of my smile once again falls upon you :-)

antedeluvian
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Re: Real men work with their ARMs (sometimes their THUMBs).
antedeluvian   11/7/2013 8:05:57 AM
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Max

Even cooler to have a digital camera running a special detection program and you just place the resistor under the lens and it says "10K 1% and it's size looks like 1/4 watt..."

Sounds like a viable iPhone/iPad/Android app. Who's up for it?

RichQ
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Re: Real men work with their ARMs (sometimes their THUMBs).
RichQ   11/6/2013 12:08:30 PM
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What went wrong? You probably tried to compose your post with Word or some other such program, and then paste it in. Trouble is, those programs often generate embedded codes that play havoc with our posting system. You need to use the "paste as plain text" feature to strip all that out. Use the folder icon with the "T" on it at the bottom of the edit box.

By the way, after you make a post you can still change or even delete it. Your own posts (and only yours) will have the additional option to edit/delete at the bottom. So if you get a result you don't like, you can readily alter it.

David Ashton
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Re: Real men work with their ARMs (sometimes their THUMBs).
David Ashton   11/6/2013 6:02:55 PM
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@RichQ....thanks for that.  I eventually decided that EET does not like the word     "A l e r t"   (probably why BeALert spells it with a capital L?) though I'm not 100% sure of that.  I did write the comment directly, though I did manage to retrieve it and copy and paste it thru notepad on second and third tries (yeah, I know not to use Word for this).

"By the way, after you make a post you can still change or even delete it."

Now there's a thing!  I never even noticed the Edit/Delete link under my posts.  Shows how wide awake I am.  I'll delete the offending ones forthwith.

Thanks again

RichQ
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Re: Real men work with their ARMs (sometimes their THUMBs).
RichQ   11/6/2013 6:26:26 PM
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Glad I could help.

hamster_nz
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I like mine!
hamster_nz   11/12/2013 7:05:59 PM
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I think that my ChipKit Uno32 is far better hardware than Arduino, however with an Arduino you can find a library for almost anything!

 

rhusain0
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wifi more important than faster cpu
rhusain0   11/13/2013 5:48:30 PM
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An inexpensive arduino w wifi or pi w integral wifi is is better than more cpu or ram. In fact I think the ultra cheap chinese Tablets which have android and wifi and usb for io and a nice battery. I think the cheap chinese tablet trumps a pi since they are available sometimes for under 50.



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