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by reiuyi
Mon Aug 06, 2012 2:06 pm
Forum: General discussion
Topic: DVD player screen
Replies: 4
Views: 1197

Re: DVD player screen

I was lazy and did this: https://dl.dropbox.com/u/88787/IMG_20120805_161028.jpg I find it amazing whatever Chinese manufacturer designed that screen-driving board, actually made it to work with 2 completely different screens. Whatever cheap screen they can get this week, they'll connect it to their...
by reiuyi
Mon Aug 06, 2012 1:22 pm
Forum: General discussion
Topic: Shipping backlog comming to an end?
Replies: 25
Views: 3988

Re: Shipping backlog comming to an end?

I follow your math but I think 5-10% RPis is extremely optimistic. I think another aspect you are not considering is that a lot of PCs get a second life as Linux boxes because the hardware to run it is a lot less intense than Windows. The actual quoted number for Linux systems is 1.41% as of Januar...
by reiuyi
Mon Aug 06, 2012 1:13 pm
Forum: General discussion
Topic: Suitable HDMI Monitor
Replies: 10
Views: 2104

Re: Suitable HDMI Monitor

I can only advice you to have a walk around a couple of garage sales and tech dumpsters (you know, the tech recycling part of your city's disposal service). In the past I found true marvellous pieces at garage sales for only a couple of euros. If you ask your neighbours if they have an old TV or com...
by reiuyi
Sun Aug 05, 2012 6:10 pm
Forum: Off topic discussion
Topic: Practical uses of diodes
Replies: 17
Views: 3807

Re: Practical uses of diodes

I agree with you up to a point. But in the 1970s and 1980s you could get pretty much everything in 0.1" centers (DIPs, SIPs, or PGAs) which made wire-wrapping really easy. Plus wire-wrapping tools were very cheap because so many were sold. Nowadays most interesting components are SMT, so you need a...
by reiuyi
Sat Aug 04, 2012 12:00 pm
Forum: Off topic discussion
Topic: 5v help???
Replies: 15
Views: 2515

Re: 5v help???

In terms of wiring up a simple circuit with one how would things look????? :) :) :) The "mb102" I spoke of sticks into the red and blue breadboard pins to indicate positive and negative. http://www.elecfreaks.com/store/images/product_images/Prototyping/breadboard/BB_MB102_02.jpg So.. the outer row ...
by reiuyi
Fri Aug 03, 2012 6:22 pm
Forum: Off topic discussion
Topic: Fix for Gateway FPD1765 LCD Monitor??
Replies: 3
Views: 1044

Re: Fix for Gateway FPD1765 LCD Monitor??

It's a long shot but what about ground loops? There was a time my screen would flicker terribly every time I connected it to my laptop. I eventually fixed it by physically and permanently disconnecting my laptop's power brick from earth (which was a really really bad idea, but it stopped the flicker...
by reiuyi
Fri Aug 03, 2012 6:19 pm
Forum: Off topic discussion
Topic: Practical uses of diodes
Replies: 17
Views: 3807

Re: Practical uses of diodes

This is a bit off-topic to the question, but I'm really glad I live in today's time. Diodes, transistors and all sort of logical gates such as AND, OR, XOR, NOR, etc are all super cheap these days! You can buy thousands of them for only 10 dollars! Experimentation with electronics has never been mor...
by reiuyi
Fri Aug 03, 2012 6:05 pm
Forum: Off topic discussion
Topic: Gooseberry :( :( :(
Replies: 26
Views: 6783

Re: Gooseberry :( :( :(

(i.e. downright misleading) claims about being x3 as efficient as the Raspberry Pi. Hint: they're not. We're busy benchmarking at the moment against a bunch of A10 platforms, and while CPU is a bit of a wash, we're still streets ahead on graphics performance. I'll have a post about this for the fro...
by reiuyi
Fri Aug 03, 2012 5:54 pm
Forum: Off topic discussion
Topic: 5v help???
Replies: 15
Views: 2515

Re: 5v help???

There are some very fine "breadboard power supply" units on eBay. They're called "mb102". Just search for the parenthesized term and you'll find tons of them. They're usually USB-powered and 5v/3.3v switchable. On top of that they're only a couple of quids/euros/dollars delivered. I think I remember...
by reiuyi
Fri Aug 03, 2012 5:49 pm
Forum: Off topic discussion
Topic: strange liquid on main board video slot!!
Replies: 2
Views: 633

Re: strange liquid on main board video slot!!

How viscose was it? Were there any exploded or damaged capacitors nearby? Did it have a silver/white colour? Liquids inside a computer can be from capacitor leakage, a drop of thermal paste (wherever that may have come from!) or people spilling their drinks (lol). I remember the last place I worked ...
by reiuyi
Sun Jul 29, 2012 9:39 am
Forum: Off topic discussion
Topic: Which Oscilloscope?
Replies: 41
Views: 12755

Re: Which Oscilloscope?

unfortunately I cant recommend a velleman personal scope. I have one and it has been nothing but trouble. It will only work on alkaline batteries but eats them very quickly ! cant get it to work with NiCd or NiMh at all because it always crashes within minutes ! it wont boot up when powered by a +9...
by reiuyi
Sat Jul 28, 2012 10:36 pm
Forum: Off topic discussion
Topic: We bought it to help with your homework
Replies: 3
Views: 1039

We bought it to help with your homework

And the household accounts If your dad ever works it all out lunchtimes in the library writing down the pokes and peeks copying an access code, get a taste for home taping Fetishists of map-making Rubber keys and rotten leads, rand and run and load and screens Then five minutes fingers crossed hopin...
by reiuyi
Sat Jul 28, 2012 10:19 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 590563

Re: Overclocking

I'm convinced the MTBF of the bcm2835 is several decades. There's a bcm70012 in my notebook (same h264 core as bcm2835, I believe) and it's been cooking inside for years now. The machine is always on, runs quite hot inside. No need to worry about hot carrier injection, Negative Bias Temperature Inst...
by reiuyi
Sat Jul 28, 2012 10:06 pm
Forum: Off topic discussion
Topic: Raspberry Pi Heatsink mod :)
Replies: 17
Views: 12919

Re: Raspberry Pi Heatsink mod :)

Who would have thought that making a heatsink pretty would be a good marketing move? (I'm gazing at this particular heatsink; I'm finding it pretty. I'm considering it for my next heatsink purchase as a result. That's progress.) It's jewellery for the Pi. :lol: What will you buy your Pi for its bir...
by reiuyi
Sun Jul 22, 2012 10:28 am
Forum: Off topic discussion
Topic: Which Oscilloscope?
Replies: 41
Views: 12755

Re: Which Oscilloscope?

Just don't buy a soundcard/USB scope. You'll regret it the minute you first use the damn thing. They're expensive as can be and their functionality is extremely limited. I'm not even sure why there are so many European electronics companies stocking up on these things, while elsewhere in the world t...
by reiuyi
Sat Jul 21, 2012 4:33 pm
Forum: Graphics, sound and multimedia
Topic: Raspberry Pi Render Farm!
Replies: 11
Views: 21284

Re: Raspberry Pi Render Farm!

Pixar would be the real king at creating renderfarms. I think they use lots of Xenons to do the rendering.

Using GPUs for computation is still in its early phase in many industries, though it's definitely something to work towards, just like floating point operations.
by reiuyi
Sat Jul 21, 2012 4:04 pm
Forum: Off topic discussion
Topic: Another potential development board
Replies: 25
Views: 7444

Re: Another potential development board

The Allwinner A10 is a pretty cool SoC. I have a device at home with that specific SoC inside of it, and the GPU (a mali-400 mp) is absolutely ridiculously fast (it's like a Videocore4 on steroids, it decodes 4k video at 30fps or 1080p at 120fps (!) while simultaneously decoding sound). Anyway, this...
by reiuyi
Fri Jul 20, 2012 7:53 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 590563

Re: Overclocking

We are not showing concern about damage to the meter. Do you think it a good idea to short TP1 and TP2 together, effectively shorting the 5V supply rails on the circuit board though? Shorting out TP1 and TP2 will make the 6v 1A polyfuse trip. In essence it won't do any damage to the board at all, a...
by reiuyi
Fri Jul 20, 2012 7:30 pm
Forum: Advanced users
Topic: Overclocking
Replies: 1125
Views: 590563

Re: Overclocking

:shock: TP1 and TP2 can only be used for measuring voltage. If you tried to use them to measure current, your multimeter would act as a short-circuit on the Pi's power input, and it'll be a race whether the fuse in your multimeter or the polyfuse on the RPi will blow first ;) This is completely irr...
by reiuyi
Fri Jul 20, 2012 6:20 pm
Forum: Off topic discussion
Topic: Which Oscilloscope?
Replies: 41
Views: 12755

Re: Which Oscilloscope?

Just don't get a "USB" oscilloscope, they're a real waste of money and each time you do a measurement you're essentially risking of destroying your computer. In my point of view those USB-styled oscilloscopes without screens are merely sound cards as they often have a 5-volt maximum Analogue oscillo...
by reiuyi
Fri Jul 20, 2012 3:01 pm
Forum: Off topic discussion
Topic: Tayda Electronics review
Replies: 13
Views: 13458

Re: Tayda Electronics review

A little follow-up post. A while back I placed another 15$ order with tayda and it turned out to be quite a pile: http://www.majhost.com/gallery/redtails/olderer-4chan/img_4312small.jpg I was very pleased I was able to purchase a huge PNP power transistor (MJE2955) and a tda2030 very cheaply (both l...
by reiuyi
Sat Jul 14, 2012 4:03 pm
Forum: General discussion
Topic: Guilty until proven innocent, eh?
Replies: 10
Views: 1611

Re: Guilty until proven innocent, eh?

in general one of the mods spots & eradicates it before it gets into the forum. imagine if you will a duck on a lake. on top of the lake all is calm and wonderful underneath the ducks feet are thrashing away nineteen to the dozen Well then thank you, and all other mods, for being very good at eradi...
by reiuyi
Sat Jul 14, 2012 3:53 pm
Forum: General discussion
Topic: Lower temperature support
Replies: 19
Views: 3116

Re: Lower temperature support

Changing a chip or two does not make an electronic system cold weather proof. Expensive component and completed board testing does. Besides, it's just what the datasheet says I'm sure the LAN9512 IO chip works fine at lower temperatures. And if it doesn't.. well, it only takes like 10 seconds befor...
by reiuyi
Sat Jul 14, 2012 3:46 pm
Forum: General discussion
Topic: Guilty until proven innocent, eh?
Replies: 10
Views: 1611

Re: Guilty until proven innocent, eh?

I actually remember one website, I think it was danbooru, where you weren't actually allowed to post or do anything the first 2 weeks. It did really help to get the spambots out.

Which does remind me, that this website is surprisingly low on spam
by reiuyi
Sat Jul 14, 2012 3:38 pm
Forum: General discussion
Topic: Importance of built-in Wifi
Replies: 15
Views: 6274

Re: Importance of built-in Wifi

I don't remember at all needing the internet to learn how to write code when I was a kid Why would you suddenly need internet nowadays? Learning python, perl. Scratch or basically any language doesn't specifically require any internet connection. What it does require is an educational package. That ...

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