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by Wooloomooloo
Tue Jan 10, 2012 9:16 am
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145728

Re: BASIC - more harmful than useful?

<t>Chromatix said: <br/> <br/> <br/> GOSUB relies on global variables, because it does not take parameters or return results.  That's *really* bad - even assembly does not really work that way.<br/> <br/> Structured programming (including DEF PROC/FN in BBC BASIC) uses parameters and (optional) retu...
by Wooloomooloo
Mon Jan 09, 2012 5:14 pm
Forum: General discussion
Topic: Battery power
Replies: 68
Views: 23175

Re: Battery power

<t>Burngate said: <br/> <br/> <br/> Yes, you're right - I exagerate for the sake of emphassis!<br/> <br/> Though where I've used them in the past, on linear PSUs, and with largish ripple going in, it's quite easy to hit that 2W limit.<br/> <br/> Maybe I should be more careful about putting figures i...
by Wooloomooloo
Mon Jan 09, 2012 1:40 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 145728

Re: BASIC - more harmful than useful?

*sigh* Ok, I'll bite. What exactly is wrong with GOSUB, and how is one supposed to write programs without using subroutines/procedures/functions/whatever-you-prefer-to-call-them...?
by Wooloomooloo
Mon Jan 09, 2012 1:22 pm
Forum: General discussion
Topic: Battery power
Replies: 68
Views: 23175

Re: Battery power

<t>Burngate said: <br/> <br/> <br/> 7805s quoted at 1A will only give that on a heatsink. That series of regulators is actually thermally limited, so in free air, and with more than the minimum of voltage drop across it, you may only manage ~100mA. Switch-mode chips, while being more complicated, ma...
by Wooloomooloo
Fri Jan 06, 2012 11:27 am
Forum: Off topic discussion
Topic: PC's are boring
Replies: 83
Views: 16217

Re: PC's are boring

Barnaby Walters said:


Mmmm, text based games… I always liked those.


You might want to check out Adam Cadre's stuff - I had a blast, especially with Lock & Key...
by Wooloomooloo
Fri Jan 06, 2012 9:46 am
Forum: Off topic discussion
Topic: PC's are boring
Replies: 83
Views: 16217

Re: PC's are boring

<t>hippy said: <br/> <br/> <br/> Chromatix said: <br/> <br/> <br/> I would instead say that PCs are boring because - unless you specifically install development software - they can only do what other people have set them up to do.  This is triply true if the PC happens to be running Windows.<br/> <b...
by Wooloomooloo
Thu Jan 05, 2012 11:53 am
Forum: General discussion
Topic: How come there are so many Raspberry Pi haters?
Replies: 99
Views: 24688

Re: How come there are so many Raspberry Pi haters?

<t>liz said: <br/> <br/> <br/> Personally, I'm looking forward to the flood of apologies from the vapourware crowd when we launch. /sarcasm.<br/> <br/> <br/> If the "vaporware" crowd owes you an apology once you launch, then the "foundation's public appearance almost seems openly hostile to deep und...
by Wooloomooloo
Wed Jan 04, 2012 1:15 pm
Forum: General discussion
Topic: Board Mod Video
Replies: 4
Views: 1199

Re: Board Mod Video

<t>Lakes said: <br/> <br/>  I would have liked to see the wire being attached as well though.<br/> (yeah, I know, picky picky..)   <br/> <br/> <br/> <br/> You did. That last quick blot down the PCB is the wire - it's just a small solder bridge, not a wire on most of the boards. Unless you were refer...
by Wooloomooloo
Wed Jan 04, 2012 10:49 am
Forum: Off topic discussion
Topic: YOU SUCK: the venting thread
Replies: 948
Views: 157759

Re: YOU SUCK: the venting thread

<t>Jongoleur said:<br/> <br/> <br/> My suck of the day is the common or garden computer mouse.  I"ve found that (in my hands at least) they die in months.  Even optical ones.  The one I have at present moves the mouse cursor from the top-left to the bottom-right ON ITS OWN…  Sometimes its amusing to...
by Wooloomooloo
Wed Jan 04, 2012 9:55 am
Forum: Other projects
Topic: The Final Frontier
Replies: 18
Views: 15540

Re: The Final Frontier

<t>Satellite phone might work, but even if you don't really care for the cost of the phone (if you plan on retrieving it, a recording to a card would have sufficed), data charges generated by the live camera(s) - if the bandwidth would suffice at all - just might bankrupt you. Possibly for several f...
by Wooloomooloo
Tue Jan 03, 2012 7:39 pm
Forum: Other projects
Topic: GPIO -> Multiple Serial Ports (UART)
Replies: 25
Views: 54530

Re: GPIO -> Multiple Serial Ports (UART)

<t>Yeah, unless UART via USB is absolutely out of the question, I'd go with that solution too. The standard way is to slap one or more FTDI chips on, they'll get you all the UARTs you need and will already be supported in Linux. One can even buy pre-made cables with USB on one end and bare UART wire...
by Wooloomooloo
Tue Jan 03, 2012 6:54 pm
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 59124

Re: Controlling a mains power socket switch? (home automation)

<r>Let's just say it's been "the year of home automation" every year in the last two or three decades pretty much the way it's been "the year of the Linux desktop" every year the last five or so. It's been long enough for the original venerable X10 technology to go out of patent protection (for abou...
by Wooloomooloo
Tue Jan 03, 2012 11:20 am
Forum: Other projects
Topic: Controlling a mains power socket switch? (home automation)
Replies: 174
Views: 59124

Re: Controlling a mains power socket switch? (home automation)

<t>Mezo said: <br/> <br/> <br/> There`s nothing wrong with "having a go" a bit of DIY electrickery, whats the worse than can happen? you get a good zap right? wrong.<br/> <br/> Speaking as a sparky (ex English) now Aussie sparky with many years under my belt, a small zap can kill you under the right...
by Wooloomooloo
Mon Jan 02, 2012 8:44 pm
Forum: General discussion
Topic: RTC
Replies: 36
Views: 15991

Re: RTC

<t>Pieter-Jan said: <br/> <br/> Just wanted to add that I am definitely not talking about super caps or battery (coins) powered devices. Just a normal condensator with a simple i2c rtc would be more than good enough.<br/> <br/> Frankly, I haven't done the math on this, but the only place I've ever s...
by Wooloomooloo
Fri Dec 30, 2011 2:38 pm
Forum: Off topic discussion
Topic: YOU SUCK: the venting thread
Replies: 948
Views: 157759

Re: YOU SUCK: the venting thread

Canuck said:


Why are all the mods here conservative pickle bags.



I'd bet it's because they read too many BOFH stories.
by Wooloomooloo
Wed Dec 28, 2011 2:46 pm
Forum: General discussion
Topic: if its good copy it?
Replies: 112
Views: 20861

Re: if its good copy it?

<t>tonycollinet said: <br/> <br/> ikcl - with that incredibly bad mannered post, you have made certain that I would not be interested in your project - even if I were before. I wonder if I am the only one.<br/> On the internets, you're never the only one in anything. Just as surely as you can bet th...
by Wooloomooloo
Tue Dec 27, 2011 9:45 pm
Forum: Other projects
Topic: Solar panel tracking
Replies: 21
Views: 8146

Re: Solar panel tracking

<t>stevep said: <br/> <br/> <br/> As I understand it, an add-on clock chip might be best assuming it is going to maintain accuracy, whereas some sort of internet based clock solution would obviously need a network connection. A gps based solution might work if only I knew anything about gps!<br/> <b...
by Wooloomooloo
Tue Dec 27, 2011 8:12 pm
Forum: General discussion
Topic: if its good copy it?
Replies: 112
Views: 20861

Re: if its good copy it?

<t>lkcl said: <br/> <br/> <br/> JamesH said: <br/> <br/> I\"d add VGA if I were them.<br/> rrrmmmm..... *wavering*.... naah.  VGA is analog signallling at 75 ohms, and thus is automatically power-hungry.  things have moved on: HDMI does the same job (ok, better - higher resolution) and because it's ...
by Wooloomooloo
Tue Dec 27, 2011 5:01 pm
Forum: Other projects
Topic: Solar panel tracking
Replies: 21
Views: 8146

Re: Solar panel tracking

<t>1) If you are basing your solar control solution on time as opposed to direct sensor reading, you will of course need some sort of a time keeper. Which can pretty much be done in two ways, either with an on-board RTC (which the Pi does not have - but neither do most MCUs, unless you are prepared ...
by Wooloomooloo
Mon Dec 26, 2011 6:33 pm
Forum: General discussion
Topic: How come there are so many Raspberry Pi haters?
Replies: 99
Views: 24688

Re: How come there are so many Raspberry Pi haters?

<t>Gert said: <br/> <br/> <br/> Because criticizing creates a feeling of superiority whilst praising is seen as self diminishing.<br/> In reality it is a sign of lack of self confidence and self esteem.<br/> <br/> <br/> <br/> A vewwy schmart guy once wrote "Violence is the last refuge of the incompe...
by Wooloomooloo
Mon Dec 26, 2011 2:38 pm
Forum: General discussion
Topic: This would make a stellar machine controller
Replies: 28
Views: 17825

Re: This would make a stellar machine controller

<t>Warringer said:<br/> <br/> <br/> In any case you can always use USB interfaces supported by EMC2.<br/> <br/> <br/> There are no USB interfaces supported by EMC2. At least, according to their own wiki. And you can definitely forget about parallel port emulation via USB.<br/> <br/> There seems to b...
by Wooloomooloo
Sun Dec 25, 2011 10:03 pm
Forum: Other projects
Topic: In-car entertainment system
Replies: 20
Views: 9071

Re: In-car entertainment system

mobeyduck said:


that thing is 160W dont you think thats way over the top?


Then again, this thing seems surprisingly well matched the RPi (at least the 5V rail): http://www.mini-box.com/picoPSU-90-XLP
by Wooloomooloo
Sun Dec 25, 2011 1:07 pm
Forum: Staffroom, classroom and projects
Topic: Best first language
Replies: 160
Views: 43846

Re: Best first language

Oh, you mean like running Strawberry Perl on Raspberry Pi...?

...yeah, I know, that's a Windows distribution that wouldn't run on the Pi, but this was hard to miss... :)
by Wooloomooloo
Thu Dec 22, 2011 11:27 pm
Forum: Other projects
Topic: LCD HDr, and VGA.
Replies: 8
Views: 2899

Re: LCD HDr, and VGA.

Yep, what she said. Also explained here: http://www.raspberrypi.org/for.....stid-21079
by Wooloomooloo
Wed Dec 21, 2011 10:10 pm
Forum: General discussion
Topic: BCM2835 datasheet
Replies: 189
Views: 74393

Re: BCM2835 datasheet

<t>I always find it amusing when people cite the number of pages of a datasheet or other spec - be it in the hundreds or thousands - as a valid reason why no-one in their right mind would want to look at them, ever, heaven forbid. Actually, only laymen could possibly think that those documents shoul...

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