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by joe
Mon May 14, 2012 1:04 pm
Forum: General discussion
Topic: Mini screen for the Raspberry Pi
Replies: 25
Views: 51813

Re: Mini screen for the Raspberry Pi

Please post a photo that works, I'm dying to see!

Also, if the config was tricky, please post that too.
by joe
Mon Apr 30, 2012 8:00 pm
Forum: General discussion
Topic: GPIO47 and other GPIO questions
Replies: 14
Views: 3123

Re: GPIO47 and other GPIO questions

I'm late to this, but are you sure you're talking about current limiting rather than declaring to the driver how much current you expect to draw?
by joe
Thu Apr 26, 2012 8:40 pm
Forum: General discussion
Topic: EBay sale Guy trying to sell Pi for 500 bucks.
Replies: 15
Views: 3879

Re: EBay sale Guy trying to sell Pi for 500 bucks.

You mentioned the word 'turnkey' a couple of times. What do you mean when you say that?
by joe
Thu Apr 19, 2012 10:00 pm
Forum: General discussion
Topic: Protecting GPIO pins
Replies: 29
Views: 5714

Re: Protecting GPIO pins

<t>bredman said: <br/> <br/> <br/> A colleague at work had a great suggestion, Play-Doh. This is known as Plasticine or modelling clay in some countries.<br/> <br/> It is easy to mold, easy to remove, and is available in any colour that you like.<br/> <br/> You could also use it to cover the bottom ...
by joe
Thu Apr 19, 2012 3:06 pm
Forum: General discussion
Topic: Close call - nearly bricked my RPi
Replies: 18
Views: 4180

Re: Close call - nearly bricked my RPi

<t>This is exactly why I think it's reckless for people to show pictures of driving LEDs off GPIO pins (or even talk about it casually). If you know enough about GPIO to know that you can drive an LED, you'll know that you have to find out the current rating, and V=IR, and how to combine them in a w...
by joe
Fri Apr 13, 2012 8:48 am
Forum: General discussion
Topic: Wheer are our Qt devs ?
Replies: 10
Views: 2436

Re: Wheer are our Qt devs ?

liz said:


That's right - Eben spoke to Quim Gil last night, and Myra's sending the boards out to the QT guys next week direct from the Foundation.



That's not a real name. It can't be.
by joe
Tue Apr 10, 2012 2:32 pm
Forum: General discussion
Topic: Hands On First Review ( link to DesignSpark )
Replies: 15
Views: 2636

Re: Hands On First Review ( link to DesignSpark )

I've not looked at the spec situation for a while so I could be wrong, but isn't the current rating of the GPIOs lower than what's required for an LED? I'd be careful about showing people how to wire up LEDs directly. Especially if they try to do more than one, or for any period of time.
by joe
Fri Apr 06, 2012 7:48 pm
Forum: General discussion
Topic: What actually is the Raspberry Pi?
Replies: 17
Views: 3220

Re: What actually is the Raspberry Pi?

<t>redman684 said: <br/> <br/> but thechnically Arduino is just an Atmel chip soldered on a a board with some connectors too.<br/> Actually, no it isn't and that's one of the points behind why I asked. I would say the most prominent things about the arduino are:<br/> <br/> 1 - the bootloader<br/> <b...
by joe
Fri Apr 06, 2012 11:10 am
Forum: General discussion
Topic: What actually is the Raspberry Pi?
Replies: 17
Views: 3220

Re: What actually is the Raspberry Pi?

Thanks GordonH I know what the machine on a literal level (I've been following the project very closely for a long time!). The subject line was more of a leader into the question.
by joe
Fri Apr 06, 2012 11:07 am
Forum: General discussion
Topic: What actually is the Raspberry Pi?
Replies: 17
Views: 3220

Re: What actually is the Raspberry Pi?

<t>Thanks! I thought as much. It's a slightly academic question, and I had considered not asking it.<br/> <br/> As one of that fabled group of people who cut their teeth o11n the BBC micro I am very excited about the initiative as well as the actual hardware. Roll on general release! and then my tur...
by joe
Thu Apr 05, 2012 11:14 pm
Forum: General discussion
Topic: What actually is the Raspberry Pi?
Replies: 17
Views: 3220

Re: What actually is the Raspberry Pi?

<t>This is kind of an awkward question, but here goes...<br/> <br/> If you open up most computers you'll see a processor, a memory controller, bridges and interface controllers, some kind of bios/firmware etc (admittedly I've not opened up a computer for a good few years).<br/> <br/> But looking at ...
by joe
Mon Mar 19, 2012 8:36 pm
Forum: General discussion
Topic: Why so power hungry?
Replies: 22
Views: 6217

Re: Why so power hungry?

Not vandal proof. But certainly vandal-wouldn't-notice. In any case, well sealed. IP67ish.
by joe
Mon Mar 19, 2012 5:42 pm
Forum: General discussion
Topic: Why so power hungry?
Replies: 22
Views: 6217

Re: Why so power hungry?

I suspect it's only annoying people like me who want to use the machine off-label for whom the worst-case scenarios don't apply. The target audience will no doubt use the machine at fullish load and then turn it right off (especially seeing as there's no off/suspend button)
by joe
Mon Mar 19, 2012 5:27 pm
Forum: General discussion
Topic: Why so power hungry?
Replies: 22
Views: 6217

Re: Why so power hungry?

<t>Well I thought as much. There's very little if any extra circuitry to 'go wrong' power draw wise. Just a USB / Ethernet controller IIRC.<br/> <br/> I plan to use one of the RPIs (if I ever get my hands on more than one) as a long-term data gathering machine. Therefore idling nearly all the time. ...
by joe
Mon Mar 19, 2012 4:59 pm
Forum: General discussion
Topic: Why so power hungry?
Replies: 22
Views: 6217

Re: Why so power hungry?

<t>I'm a bit disappointed to follow the battery discussions. I had hoped to run my Pi (if I ever manage get one) on a small number of batteries for an extended period of time (a week?). Looks like that won't be possible without lugging around a car battery.<br/> <br/> My question is this:<br/> <br/>...
by joe
Fri Feb 03, 2012 10:01 am
Forum: General discussion
Topic: Help me track down this SBC
Replies: 5
Views: 1236

Re: Help me track down this SBC

YES that was it! Thank you.
by joe
Thu Feb 02, 2012 10:15 pm
Forum: General discussion
Topic: Help me track down this SBC
Replies: 5
Views: 1236

Re: Help me track down this SBC

<r>And it's not in this list: <URL url="http://www.linuxfordevices.com/c/a/Linux-For-Devices-Articles/Teeny-weeny-Linux-SBCs/"><LINK_TEXT text="http://www.linuxfordevices.com/c/a/Linu ... inux-SBCs/">http://www.linuxfordevices.com/c/a/Linux-For-Devices-Articles/Teeny-weeny-Linux-SBCs/</LINK_TEXT></U...
by joe
Thu Feb 02, 2012 9:34 pm
Forum: General discussion
Topic: Help me track down this SBC
Replies: 5
Views: 1236

Re: Help me track down this SBC

<t>At some point in the conversation a single board computer has been mentioned. I'm trying to find it not because I want one, but because it's annoying I can"t remember what it was and it"s annoying me.<br/> <br/> What I vaguely remember:<br/> <br/> <br/> it was on a .uk site<br/> the seller wasn"t...
by joe
Thu Jan 12, 2012 5:36 pm
Forum: General discussion
Topic: Websites tellng that Raspis have been sold in advanced
Replies: 15
Views: 3260

Re: Websites tellng that Raspis have been sold in advanced

I don't read Spanish but Google translate does.


I have long been following this work and it's unbeatable seafront.


You and me both Munthier Dave, you and me both.
by joe
Mon Dec 05, 2011 12:26 pm
Forum: Staffroom, classroom and projects
Topic: Bash - Programming
Replies: 30
Views: 8195

Re: Bash - Programming

andywe - are you seriously suggesting people write anything other than 'bash scripts' in bash? Crazy talk.
by joe
Sat Dec 03, 2011 12:05 am
Forum: Other projects
Topic: Can I do this to a FET?
Replies: 4
Views: 1061

Re: Can I do this to a FET?

About that...
by joe
Fri Dec 02, 2011 11:55 pm
Forum: Other projects
Topic: Can I do this to a FET?
Replies: 4
Views: 1061

Re: Can I do this to a FET?

Thanks! No, load isn't going to send any nasty surprises back into the FET. Unless something very strange happens...
by joe
Fri Dec 02, 2011 9:58 pm
Forum: Other projects
Topic: Can I do this to a FET?
Replies: 4
Views: 1061

Re: Can I do this to a FET?

<t>It's been a good few years since I did any electronics, so I'm a bit shaky.<br/> <br/> I want to drive some LEDs with a FET, driven off a GPIO pin. I'm going to sink the current through the FET. I would also like to have a manual over-ride switch so I can switch them on myself. I'd like to this s...
by joe
Fri Dec 02, 2011 5:20 pm
Forum: General discussion
Topic: Documentation for UART/SPI/I2C/GPIO
Replies: 7
Views: 1758

Re: Documentation for UART/SPI/I2C/GPIO

Quote from malcolmh on December 2, 2011, 17:13
Broadcom are like that - they demand custody of your first-born before giving you data sheets.

So send them an alpha baord
by joe
Fri Dec 02, 2011 5:04 pm
Forum: General discussion
Topic: Heres what you could have won
Replies: 2
Views: 829

Re: Heres what you could have won

<t>Massively excited to see real almost-done boards. Huge respect for the team making them. I am, of course, a little disappointed to be unable to buy one in time for Christmas, it was a potential central tenet of my present ideas.<br/> <br/> How about selling a double-sided business card which can ...

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