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by hzrnbgy
Mon May 07, 2012 1:40 am
Forum: General discussion
Topic: Raspberry PI ARM Clone
Replies: 66
Views: 18447

Re: Raspberry PI ARM Clone

<t>give a dual cortex-M4 board with dual ethernet and a dedicated 16MB/8MB RAM for both and I'm happy.<br/> <br/> If you really want to teach programming to kids, start with the basic and ditch Linux all together. Let them experience the joy of blinking a LED/bunch of LEDs, driving an LCD, rotating ...
by hzrnbgy
Mon May 07, 2012 1:26 am
Forum: General discussion
Topic: Running programs off a USB memory stick
Replies: 17
Views: 2921

Re: Running programs off a USB memory stick

Because you are not considered elite in the Linux world if you have to let the OS automagically do stuff for you, at least that's how some Linux overlords think it is.
by hzrnbgy
Fri May 04, 2012 4:26 pm
Forum: Other projects
Topic: Complex camera peripherials
Replies: 27
Views: 13641

Re: Complex camera peripherials

In case the question is directed to me, my answer would be some company that not related to anything embedded programming. I'm more of a hobbyist/enthusiast programmer.
by hzrnbgy
Fri May 04, 2012 8:53 am
Forum: Other projects
Topic: Complex camera peripherials
Replies: 27
Views: 13641

Re: Complex camera peripherials

<t>I would eventually incorporate the Ethernet peripheral so I can stream some realtime low fps video, much like a cheap DIY IP cam. Programming is the easy part, it's the hardware that I'm struggling with. I can probably whipped out a basic PCB using Eagle but its not going to be nowhere near comme...
by hzrnbgy
Thu May 03, 2012 1:52 am
Forum: Other projects
Topic: Complex camera peripherials
Replies: 27
Views: 13641

Re: Complex camera peripherials

<r>If you are willing to compromise with a different solution other than the RPi, you can use this board<br/> <br/> <URL url="http://www.mouser.com/ProductD.....N%252b9qEw">http://www.mouser.com/ProductD.....N%252b9qEw</URL><br/> <br/> and this camera<br/> <br/> <URL url="http://www.ebay.com/itm/VGA...
by hzrnbgy
Thu May 03, 2012 1:01 am
Forum: Beginners
Topic: OneWire Devices On GPIO
Replies: 2
Views: 1713

Re: OneWire Devices On GPIO

Am i safe to assume you are referring to the ds18b20? I worked with these before on the driver level and it requires hundred microsecond timing accuracy that your regular linux might not be able to provide.
by hzrnbgy
Wed May 02, 2012 3:33 am
Forum: Other projects
Topic: Powering RPi off a car battery?
Replies: 21
Views: 23799

Re: Powering RPi off a car battery?

Here's a low cost 12V>5V switched mode converter (it can work up to 36V input, 7V minimum)

http://www.mouser.com/ProductD.....%2f5ymI%3d

I use these in my projects and they work extremely well
by hzrnbgy
Tue May 01, 2012 3:33 am
Forum: General discussion
Topic: M2M, GPS and GSM
Replies: 12
Views: 17005

Re: M2M, GPS and GSM

<t>Most GPS receiver comes with a serial UART interface so its within the realms of possibility and should be really easy to add. But for cellular modems, that depends on which interface they come with. But then again, you can always add an intermediate microcontroller that bridges the RPi to the mo...
by hzrnbgy
Thu Apr 26, 2012 7:47 pm
Forum: General discussion
Topic: The Raspberry Pi Community
Replies: 20
Views: 3767

Re: The Raspberry Pi Community

What bothers me is that being honest in this forum can get you ban yet rudeness fall on deaf ears.
by hzrnbgy
Thu Apr 26, 2012 6:39 pm
Forum: Other projects
Topic: Complex camera peripherials
Replies: 27
Views: 13641

Re: Complex camera peripherials

Until we get a hold of a more technical datasheet than what it is provided, I can only assume that the camera connector might be of the 8/16 bit parallel digital camera interface.
by hzrnbgy
Thu Apr 26, 2012 4:32 am
Forum: Beginners
Topic: SPI on Raspberry Pi
Replies: 17
Views: 21440

Re: SPI on Raspberry Pi

<r>If you are willing to whip out some codes, you can order a very cheap development board off mouser ($15 plus shipping)<br/> <br/> <URL url="http://www.mouser.com/ProductD.....N%252b9qEw">http://www.mouser.com/ProductD.....N%252b9qEw</URL><br/> <br/> It's based on the newer STM32F4 (Cortex-M4) chi...
by hzrnbgy
Thu Apr 26, 2012 4:19 am
Forum: Automation, sensing and robotics
Topic: Greenhouse Automation
Replies: 15
Views: 10254

Re: Greenhouse Automation

<t>Seems like a good idea to me. All I have to do pretty much is re-design the board to plug into the RPi but as far as software goes, it uses standard serial port. I'm pretty sure the RPi can run apache/mysql as that's what I have running to handle logging/control/user interface. The only thing I h...
by hzrnbgy
Wed Apr 25, 2012 12:54 pm
Forum: General discussion
Topic: raspberry pi already failed ?
Replies: 222
Views: 41154

Re: raspberry pi already failed ?

<t>scep said: <br/> <br/> <br/> hzrnbgy said: <br/> <br/> <br/> How is a $35 Pi/Linux combo any cheaper than $270 Win netbook? Factor in your HDMI monitor, keyboard, mouse, powered USB hub, decent power supply, some nice case, a decent size SDcard, time spent to make the contraption somewhat portabl...
by hzrnbgy
Wed Apr 25, 2012 12:26 pm
Forum: Other projects
Topic: Pi as a apartment/house manager
Replies: 9
Views: 2095

Re: Pi as a apartment/house manager

<r>The composite out is really a bad choice for displaying text. You are better off with an actual computer monitor.<br/> <br/> html/php is fairly straighforward. You type in the code, save it, and view the output right away from your browser.<br/> <br/> As far as tutorial goes, the one that I've al...
by hzrnbgy
Wed Apr 25, 2012 12:06 pm
Forum: General discussion
Topic: raspberry pi already failed ?
Replies: 222
Views: 41154

Re: raspberry pi already failed ?

I'm not a Linux hater here as I use it myself. I have a Pandaboard and just pre-ordered my RPi a couple weeks back. I just don't like people who are so blinded with fanboyism that they do not contribute any at all to the mission of the foundation.
by hzrnbgy
Wed Apr 25, 2012 11:54 am
Forum: General discussion
Topic: raspberry pi already failed ?
Replies: 222
Views: 41154

Re: raspberry pi already failed ?

<t>andyl said: <br/> <br/> <br/> hzrnbgy said: <br/> <br/> <br/> <br/> 4/8gb SD cards are very cheap and even the most technophobe teacher can comprehend pulling out the existing card and replacing it with one from the box of pre-prepared cards.<br/> <br/> <br/> <br/> How is a pre-prepared SD card a...
by hzrnbgy
Wed Apr 25, 2012 11:02 am
Forum: General discussion
Topic: raspberry pi already failed ?
Replies: 222
Views: 41154

Re: raspberry pi already failed ?

<t><br/> 4/8gb SD cards are very cheap and even the most technophobe teacher can comprehend pulling out the existing card and replacing it with one from the box of pre-prepared cards.<br/> <br/> <br/> <br/> How is a pre-prepared SD card any different than a pre-image Windows drive? Or pulling a hard...
by hzrnbgy
Wed Apr 25, 2012 5:47 am
Forum: General discussion
Topic: raspberry pi already failed ?
Replies: 222
Views: 41154

Re: raspberry pi already failed ?

<t>Debating with a Linux zealot is an exercise in futility. Don't get me wrong, I use Linux at work, I have a Linux webserver, I own an Android phone, I code in Linux, etc.<br/> <br/> The moment you say something against their religion, they get back to you with their big guns.<br/> <br/> "You are a...
by hzrnbgy
Tue Apr 24, 2012 3:44 pm
Forum: Other projects
Topic: Pi as a apartment/house manager
Replies: 9
Views: 2095

Re: Pi as a apartment/house manager

I would go for a php/mysql/html/css/javascript combo. This gives you the option of running the UI on a separate machine via web services so you are not required to connect a dedicated screen to the RPi
by hzrnbgy
Tue Apr 24, 2012 4:39 am
Forum: Beginners
Topic: SPI on Raspberry Pi
Replies: 17
Views: 21440

Re: SPI on Raspberry Pi

If you are going to bit bang SPI, why not use UART instead? Simpler to implement and Linux already has built in support for it. Are you thinking of a particular device that can only talk SPI?
by hzrnbgy
Wed Apr 18, 2012 1:04 pm
Forum: Other projects
Topic: Rasberry Pi as in car pc
Replies: 32
Views: 33566

Re: Rasberry Pi as in car pc

<t>The plan is the RPi talk to the custom board via a serial. In header connection in the board below, the xmega controller can talk to the RPi via serial, I2C, or SPI but since there are no SPI or I2C driver yet, I programmed the controller to listen on the serial port for commands coming from the ...
by hzrnbgy
Wed Apr 18, 2012 12:47 pm
Forum: Other projects
Topic: Rasberry Pi as in car pc
Replies: 32
Views: 33566

Re: Rasberry Pi as in car pc

<t>I had some prototype boards built that comes with a bluetooth and GPS headers so I can do exactly what you're thinking, controlling the Pi from a bluetooth device, not necessarily from a mobile phone but could be anything from a custom dashboard or tablet, etc.<br/> <br/> I already got the board ...
by hzrnbgy
Sat Apr 14, 2012 7:13 am
Forum: Other projects
Topic: Periodically turning on and off a raspberry pi
Replies: 18
Views: 6147

Re: Periodically turning on and off a raspberry pi

<r>Perfect!<br/> <br/> I'm working on some project that involves a cheap camera sensor and a cheap development board.<br/> <br/> I'm in the process of developing the driver for the embedded camera for my STM32F4 Discovery board<br/> <br/> <URL url="http://www.mouser.com/ProductD.....N%252b9qEw">http...
by hzrnbgy
Fri Apr 13, 2012 5:35 am
Forum: Other projects
Topic: timer resolution (measuring pulse width)
Replies: 6
Views: 2983

Re: timer resolution (measuring pulse width)

quite hard to do in Linux with a crippled datasheet
by hzrnbgy
Thu Apr 12, 2012 6:22 pm
Forum: General discussion
Topic: R-Pi Python with Numpy & Scipy
Replies: 29
Views: 11414

Re: R-Pi Python with Numpy & Scipy

<r>boley said: <br/> <br/> <br/> hzrnbgy said: <br/> <br/> <br/> How about a $15 STM32F4 board<br/> <br/> ....<br/> <br/> all the good stuff<br/> <br/> <URL url="http://www.mouser.com/ProductD.....N%252b9qEw">http://www.mouser.com/ProductD.....N%252b9qEw</URL><br/> <br/> <br/> Pretty neat, I wasn't ...

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