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by hippy
Mon Jan 16, 2012 7:09 pm
Forum: Other projects
Topic: why not use the wiki?
Replies: 49
Views: 10986

Re: why not use the wiki?

"Expansion boards (shields)"

It might be a good idea to find an alternative name for R-Pi expansion boards as "shield" brings a lot of preconceived notions ( size, format, pinout ) from the Arduino world which is not applicable to the R-Pi.
by hippy
Sun Jan 15, 2012 3:46 pm
Forum: General discussion
Topic: Battery Powered Pi
Replies: 9
Views: 3121

Re: Battery Powered Pi

<t>Gert said: <br/> <br/> <br/> There are numerous posts about battery operation. Just want to mention here (again) the following: Beware that the boards as they come from the factor are price optimized not power optimized. You will get lower poser consumption if you replace the 1V8 regulator with a...
by hippy
Sun Jan 15, 2012 3:32 pm
Forum: Other projects
Topic: Tailor-Made Programming Language
Replies: 49
Views: 12751

Re: Tailor-Made Programming Language

<t>Chromatix said: <br/> <br/> <br/> I am aware that there are major pitfalls when designing a syntax, and I hope to avoid them from the outset.<br/> <br/> <br/> I think having an coherent whole is the most important part of any language; that it's consistent within itself and one part doesn't jar w...
by hippy
Sun Jan 15, 2012 2:04 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 179940

Re: BASIC - more harmful than useful?

<t>tufty said: <br/> <br/> programming is based on mathematics.  Not easy mathematics, but really quite hard mathematics.<br/> I think it's that impression ( which has been around for decades ) is one of the things which discourages people from embarking on computer sciences because, if they find "r...
by hippy
Thu Jan 12, 2012 6:40 pm
Forum: General discussion
Topic: Fragmentation
Replies: 34
Views: 9258

Re: Fragmentation

Tomo2k said:

Unix uses Carriage Return only, while DOD uses Carriage Return and Linefeed.
To be pedantic; doesn't *nix use linefeed (0x0A) ?
by hippy
Tue Jan 10, 2012 3:00 pm
Forum: General discussion
Topic: RCA Port
Replies: 10
Views: 2986

Re: RCA Port

Abishur said:

How much power is sent down an video RCA port? 
Note sure that can really be expressed in any meaningful or useful way but CVBS is usually around 1V p-p into 75R so that's approximately 13mA max, and 1V * 13mA = 13mW.
by hippy
Mon Jan 09, 2012 12:49 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 179940

Re: BASIC - more harmful than useful?

<t>tufty said: <br/> <br/> It seems that even the BASIC fans are coming around to the idea that BASIC simply isn"t good enough as it stands, and could bear some improvement.<br/> In the sense of K&R C being superseded and C++ being a development upon C and other languages' evolution then it can ...
by hippy
Sun Jan 08, 2012 4:01 pm
Forum: General discussion
Topic: Power supply WARNING
Replies: 73
Views: 40695

Re: Power supply WARNING

A worrying assessment of 'cheap import' chargers which is well worth the read ...

http://www.esc.org.uk/industry.....g/chargers

Buying cheap may turn out to be false economy or even worse.
by hippy
Sun Jan 08, 2012 3:42 pm
Forum: General discussion
Topic: Power supply WARNING
Replies: 73
Views: 40695

Re: Power supply WARNING

<t>And just in case anyone thinks the risk of mains being put on the "5V" side of an adapter is being exaggerated, it's worth checking out product recall information such as this ...<br/> <br/> http://www.energetix.recceolog.....;Itemid=49<br/> <br/> There are a number of recalls there for adapters ...
by hippy
Sun Jan 08, 2012 3:26 pm
Forum: General discussion
Topic: Power supply WARNING
Replies: 73
Views: 40695

Re: Power supply WARNING

<t>Abishur said: <br/> <br/> <br/> The good news is that, as was previously mentioned, there is voltage protection on the board and it was designed with this very scenario in mind.<br/> <br/> Also, the USB would not receive too high a voltage as it is behind the voltage protection, so no worries the...
by hippy
Sun Jan 08, 2012 3:08 pm
Forum: General discussion
Topic: sales date?
Replies: 131
Views: 50862

Re: sales date?

<t>Grumpyoldgit said: <br/> <br/> <br/> Are you being serious? this sounds like a recipe for frustration and multiple disappointment. The early bird catches the worm. To suggest that the bird who can't be assed to get up early or go to bed late should triumph is to reward sloth.<br/> <br/> <br/> Yes...
by hippy
Sun Jan 08, 2012 2:42 pm
Forum: General discussion
Topic: Power supply WARNING
Replies: 73
Views: 40695

Re: Power supply WARNING

<t>hajj_3 said: <br/> <br/> <br/> i was unaware of these problems with psu's! I bought a uk plug with a usb port on it for 99p delivered from china a few months ago, starting to think it could be pretty dangerous.<br/> <br/> <br/> You have three choices -<br/> <br/> 1) Use it and keep your fingers c...
by hippy
Sun Jan 08, 2012 2:19 pm
Forum: General discussion
Topic: sales date?
Replies: 131
Views: 50862

Re: sales date?

<t>Jessie said: <br/> <br/> I don't get what the big deal is about the 1st come first served.  I'm sure as the foundation starts bringing in money there will be more options, but for now that is just how it is. <br/> I think the main worry is that first sales day and some people feel they may all be...
by hippy
Sun Jan 08, 2012 1:50 pm
Forum: Off topic discussion
Topic: Greatest game of all time
Replies: 152
Views: 47904

Re: Greatest game of all time

<t>Prometheus said: <br/> <br/> <br/> Anyway, whilst I do think that there are particular defining games that can easily be pointed out, I don"t think that there can be one single catch-all "greatest" game, since it"s such a subjective thing.<br/> <br/> <br/> True; while not all my favourites there ...
by hippy
Sun Jan 08, 2012 1:09 pm
Forum: General discussion
Topic: Power supply WARNING
Replies: 73
Views: 40695

Re: Power supply WARNING

<t>bf4ed said: <br/> <br/> <br/> Just add LM7805 before power input of r-pi. For use in car or home its wise to add some voltage stabilizer, just bo be on the safe side. Then you can use a cheap ebay supply.<br/> <br/> <br/> <br/> The problem is that people buying a supply marked 5V and suitable for...
by hippy
Sat Jan 07, 2012 5:29 pm
Forum: Off topic discussion
Topic: Greatest game of all time
Replies: 152
Views: 47904

Re: Greatest game of all time

<t>pauldow said: <br/> <br/> <br/> I'm going to carbon date myself, and go with Collosal Cave Adventure.<br/> <br/> <br/> Ditto. I think, like with favourite music, it's an age-realted thing and preferred genre ( mine's obviously RPG / IF ). My all time favourites are -<br/> <br/> * Adventure<br/> <...
by hippy
Sat Jan 07, 2012 3:38 pm
Forum: Off topic discussion
Topic: PC's are boring
Replies: 83
Views: 19534

Re: PC's are boring

<t>Chromatix said: <br/> <br/> <br/> To make a high-class game like Mass Effect, or Portal 2, or even Freespace (to go back about a decade) you need more than just programming skills.<br/> <br/> <br/> I think that's the crux. When the bar was lower many of us thought "I can do that" and went ahead a...
by hippy
Sat Jan 07, 2012 3:11 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 179940

Re: BASIC - more harmful than useful?

<t>Chromatix said:<br/> <br/> <br/> I think that it is possible to invent a language which is as simple to start with as BASIC - not requiring any boilerplate just to get words or simple graphics on the screen - but which has more advanced features, waiting only for the need to use them.<br/> <br/> ...
by hippy
Fri Jan 06, 2012 11:22 pm
Forum: Staffroom, classroom and projects
Topic: OpenGL and CSharp - OpenTK
Replies: 2
Views: 3603

Re: OpenGL and CSharp - OpenTK

<r>andywe said: <br/> <br/> Also, it can be programmed using .Net Visual Basic ...<br/> <br/> Develop your games on a raspberryPi and then, if you want to, and have the necessary toolkits and IDEs get them to run on a Windows platform ?<br/> <br/> <br/> Or develop on Windows and run on an R-Pi. That...
by hippy
Fri Jan 06, 2012 6:23 pm
Forum: HATs and other add-ons
Topic: simple 16 signal GPIO I2C board
Replies: 31
Views: 20487

Re: simple 16 signal GPIO I2C board

<t>Frank Buss said: <br/> <br/> You could even short all output connections and the expander board survives it.<br/> <br/> Watch out for the maximum draw of the 3V3 rail though; just 50mA.<br/> <br/> With 680R that's just shy of 5mA per output ( good enough as you say for most LED's ), but 16 output...
by hippy
Fri Jan 06, 2012 3:58 pm
Forum: General discussion
Topic: Pictures of screen displaying example of RPi composite output?
Replies: 29
Views: 13311

Re: Pictures of screen displaying example of RPi composite output?

<t>Davespice said: <br/> <br/> <br/> Off the top of my head I would guess that when you boot the Pi up with the Composite connector in use the display would adjust accordingly.<br/> <br/> <br/> Composite out is purely "output only" so the R-Pi would have no means to determine what is connected. It w...
by hippy
Fri Jan 06, 2012 2:36 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 179940

Re: BASIC - more harmful than useful?

<t>spock said: <br/> <br/> <br/> what's wrong with square brackets for arrays? :s if you are that nit-picky you really have to implement something from scratch (which then probably nobody will use). <br/> <br/> <br/> Nothing wrong with square brackets per se, but Basic arrays have typically used par...
by hippy
Fri Jan 06, 2012 12:19 pm
Forum: Staffroom, classroom and projects
Topic: BASIC - more harmful than useful?
Replies: 899
Views: 179940

Re: BASIC - more harmful than useful?

<t>Chromatix said: <br/> <br/> So let's step back a bit.  In the absence of a BASIC implementation that is immediately suitable for the purpose, is there one that could be easily modified?<br/> Or would it be sensible to start from scratch?<br/> <br/> <br/> Gambas looked good to me though I haven't ...
by hippy
Thu Jan 05, 2012 10:21 pm
Forum: General discussion
Topic: Point of order - Forum etiquette
Replies: 7
Views: 1601

Re: Point of order - Forum etiquette

<t>scep said: <br/> <br/> <br/> As Jessie says, I had no idea the thread was locked when I posted - there is no  indication of this.<br/> <br/> But since we are talking about forum etiquette - I can't think of too many forums where, if an admin locked a thread(s) (for whatever reason) but a member k...
by hippy
Thu Jan 05, 2012 8:20 pm
Forum: General discussion
Topic: Point of order - Forum etiquette
Replies: 7
Views: 1601

Re: Point of order - Forum etiquette

<r>In respect of - <URL url="http://www.raspberrypi.org/for.....tte#p26900">http://www.raspberrypi.org/for.....tte#p26900</URL><br/> <br/> The thread pointed to was locked for me at a time well before four further posts were made by Admins otherwise I would not have posted as such.<br/> <br/> That's...

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