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Old 04-02-2012, 09:45 PM   #1
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Default Raspberry Pi Brewhouse controller?

Has anyone seen this?

http://www.raspberrypi.org/

It's apparently a $35 Linux/GNU computer in a very small package. According to their site:

What’s a Raspberry Pi?
The Raspberry Pi is a credit-card sized computer that plugs into your TV and a keyboard. It’s a capable little PC which can be used for many of the things that your desktop PC does, like spreadsheets, word-processing and games. It also plays high-definition video. We want to see it being used by kids all over the world to learn programming.

It seems like this would be in interesting way to build a low-cost brewhouse controller system. Between this card and an Arduino (or netduino), you could build some pretty cool functionality into a single, small, box.

Thoughts?

Edit: Adding FAQ link from their site: http://www.raspberrypi.org/faqs

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Old 04-02-2012, 10:58 PM   #2
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I ordered one a month or two ago... It was supposed to be here already, still hasn't shipped. Now its looking like august? Oh well I'd like to find a touchscreen to work with it. Should be a fun little project

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Old 04-03-2012, 12:08 AM   #3
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Sounds cool. I think I'll wait until their supply chain catches up before I start trying anything with it. It would be pretty cool to run a whole brewhouse from it.

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Old 04-03-2012, 04:00 AM   #4
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Wont you still need a I/O interface of some sort?

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Old 04-03-2012, 01:47 PM   #5
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it is an I/O interface... of course you can get an external expansion board which lets you add more functionality to it, like the "gertboard".

raspberrypi isnt nearly as mature as arduino, so there isnt as many programs for it yet, but im sure this will make an even better brewhouse controller once people build one. its got quite a bit more features for only another $10 (over an arduino). a LOT more IO ports and native HDMI sound/video and networking.

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Old 04-03-2012, 02:05 PM   #6
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This has lots of potential. I am very interested in seeing someone do a touchscreen on this.

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Old 04-03-2012, 09:33 PM   #7
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Quote:
Originally Posted by sv_1 View Post
I ordered one a month or two ago... It was supposed to be here already, still hasn't shipped. Now its looking like august? Oh well I'd like to find a touchscreen to work with it. Should be a fun little project
I read an article on this about a month ago (my memory is shot so don't quote me on the facts...just the jist of the story) on why they have not shipped. It had something to do with the manufacturer installing the the wrong usb drive or something to that effect and they had already built like a couple hundred thousand or so. SO they were on back order.
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Old 04-03-2012, 10:16 PM   #8
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Quote:
Originally Posted by audger View Post
...
raspberrypi isnt nearly as mature as arduino, so there isnt as many programs for it yet...
I'm not sure I follow - doesn't RPi run Linux? Linux has a ton of programs .

Until the supply chain is sorted out I'm using PIDs and horsing around with an Arduino... but I think you can control the Arduino from a PC using Ruby (or python or shell scripts or...)

So, I figured once I could get my hands on an RPi I'd just use it as a linux PC and drive the brew system via the Arduino.

In the mean time I could do the same with a spare netbook probably.

I thought it seems like a fairly useful setup because the RPi would let you easily do all the logging that you might be interested in. It also has a lot more horse power than the arduino.

On the other hand I thought the RPi was pretty limited in terms of i/o pins so coupling the two seems to make a certain amount of sense (since gertboard will be immature - which is maybe what you meant?).
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Old 04-04-2012, 01:31 AM   #9
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I wonder if any decent brew control applications exist for any of the platforms, to build a decent one takes quite a bit of time, effort, and process control knowledge. It is easy to do on/off control, but that is mostly the limitations of the current hardware used, no one has done much with analog out yet.

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Old 04-04-2012, 11:59 AM   #10
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I figured a touchscreen would be really cool or you could simply hook a USB hub up to it and you'd have plenty of room to use an arduino for your sensors and add a keyboard, mouse, and monitor if you want.

The touchscreen is way cooler, though.

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