2015 posts • joined 12 Jun 2009
I was at a talk last week at the IoE in London, to ICT students (16-18 yrs) where a Google dude was talking about the driverless cars (amongst other things).
A very perceptive question from one of the younger students from the audience. If there are two people crossing the road from different directions, and an accident is inevitable, how does the car decide which one to hit?
Google guy didn't have an answer, which is not that surprising. Not sure anyone has the answer yet.
Please be careful not to cross the streams.
Basically RACHEL with a update facility?
Seems like a fair amount of wheel reinventing going on here.
Re: GPU is not dual core
Two vector/scaler cores, plus 12 Quad processors.
Each vector core is a 16 way SIMD devices.
So lots of 'cores'.
Actually, a guy at the Foundation is working on improving XBMC menus and the like - they are currently a bit inefficient, especially when controlled via CEC.
Although multi cores would be nice (but how multi threaded is XBMX?), better to get the software efficient first...
Re: Running headless over wifi this can't be beaten
re: reading comprehension.
Rather ironic that you got my name wrong then....it's written next to the post, and contains the name 'James' not 'John'
But my point was that you cannot compare a $7 UNO with a $20 Pi, simply because they are completely different devices. In fact one has to wonder why you brought the subject up as they are so completely different. Rather like comparing a Reliant Robin with a F430. I suppose they are still both cars, according to some definition of car.
Re: Running headless over wifi this can't be beaten
Good luck with all that 3D, camera and video decode with the $7 UNO.
But to be a little less sarcastic, you get what you pay for. If the UNO does what you want - use it. If the A+ does what you want, use it. Don't use the wrong device for a job, because you will pay the wrong price.
@AC - what has changed
Form factor has been made smaller
Power requirements have been reduced
Best thing? It's now $20 (before tax/delivery). I am not aware of anything remotely this powerful in this price range. Remember, decent 3D, 2D, camera ISP, 1080p30 H264 encode/decode, 1Ghz (overclocked) processor, well supported Linux distro (plus others), great community.
I think that is a pretty good deal.
And I think you are wrong about the A being more popular, I expect sales of it to fall to zero. This is so much better. The ONLY reason to still buy an A is if you already have a case for an A. And since cases cost from about $5 you may as well just buy a new one for the new form factor. TBH, if case compatibility is the only argument you can come up with, the A+ is clearly already a success!
The reasons for 1 USB is that the SoC only supports 1. To add more, you have to add a USB hub to the board which means much more expensive - basically the old model B. You want more USB? Get a B+. It's only $15 more.
Re: So are they all made in UK now ?
B, B+, A and A+ all made in the UK (except those actually destined for the Chinese market anyway). I think some CM's and some camera modules are still made in China. - but that is a decision made by the licencees, not the Foundation.
The haynes book was called Build your own Sports Car by a guy called Ron Champion. The car is called the Locost, and have a thriving race series run by the 750 Motorclub.
If you can find the donor parts (Mk2 Escort, Cortina front hubs) they are pretty easy to make, although I haven't finished my road going one yet, even after 15 years, due to buying a racing one ready made and then having too many children.
Re: Westfield SEight
The handling on the SEight is a bit iffy ( or used to be) due to the very heavy engine. Makes the steering a bit heavy as well.
And there's nothing wrong with the styling of the Westfield! (made one, loved it, only transport for well over a year)
And as for 'bodged together kit car", I suggest taking a look at some that have been made properly. Don't judge all kit cars by the worst examples.
Re: I'M NOT BEING FUNNY BUT...
I'm not being funny, but what is the point of Emmanuel Goldstein.
It's pretty much the same question. I hope you know the answer to it.
Something sounds odd. There are plenty of people with months and months of uptime without any sort of corruption. Me included - I got a old B256 with OpenElec that has been running with occasional reboots for a year and it's still fine.
SD card corruption.
The corruption caused (actually increased the frequency) by overclocking was fixed some months ago.
Corruption caused by wearing out the cards might be an issue, SD cards do have limited write cycles, so avoiding excessive writing can increase life considerably. Turn off logging to card. Leaving them for a year might be hitting that sort of issue, in fact I would think it quite likely if you haven't taken precautions to reduce write cycles.
Your particular job would be better served by the compute module by the sound of it.
Nope, max 1GB, and only if a manufacturer decides to make a POP chip that fits, Which won't happen. So 512MB until the next version comes out. I believe Eben Upton has said this will be the final revision with the 2835.
Re: The B got a memory memory in a previous rev @MAge
Actually, the SoC in the Raspi was designed to go in to mobile phones as a media processor (and other stuff). The GPU was specifically designed for H264 decode at 1080p30, encode for camera at the same speed. It has fast 3D and 2D graphics for running games. The ARM itself was added as an bolt on goody.
And the EXACT SAME SOC was used in the Roku2 - which as I am sure you are aware is a media box.
So it's media credentials are actually really quite good. The ARM is a bit weak for real speedy UI stuff, but we use it at home to stream stuff wirelessly from the PVR and NAS, and also use one in a motorhome as a wireless AP so the sprogs can stream stuff to their tablets on the move. Works fine with XBMC.
I do tend to overclock to 900Mhz (simple config change)which does make an appreciable difference.
Re: Birthday present sorted :-)
The PiBow coupe case is pretty damn good. Easy access to the GPIO so add on boards are outside the case...
A playmonaut sized Falcon 9.
On the whole
Since the majority of the panel seem to be fairly well educated, even if not in a scientific subject, I would suggest they are all bright enough to make a fairly sane assessment of the situation.
After all, their degrees were a long time in the past, and we all learn a lot in the intervening years. I have a degree in computer science, yet know a fair amount of physics etc. I can also strip an engine and reassemble it WITHOUT ANY BITS LEFT OVER. I certainly wasn't able to do that when I left university.
In short, people can be smart in more than their degree subject as long as they start off smart.
Re: We are doomed. DOOMED!
That warp drive was blown out of all proportion by the press - not NASA.
Re: Maybe we could get a consensus
I think you'll find that that is the University of Wisbechistan.
(Yes, I am local (ish) )
Are there any women here?
What you have to consider is that when you got on a plane and went to Shanghai, what happened was that you left the UK (I presume), and flew quite a long way to A DIFFERENT COUNTRY.
These 'DIFFERENT COUNTRIES' may have completely different road rules.
Note: Some plane journeys do NOT result in leaving your country. Please refer to the ticket for more information, but a good rule of thumb is that if you need a passport, you have probably changed countries and should therefore not necessary apply the same rules of the road.
This sort of filtering need to be done in the home, so that the porn is kept away from the younger people, but is still available to the older people who may wish to indulge.
Killing it all at the ISP (or even at the in home router) kills it for adults as well...
Hope the super weapon
Is called the Tar-Ayim Krang
Please replace the word 'par' with the correct word 'paragraph'. It doesn't take much extra typing, and would mean you don't look like an illiterate dick who's purpose in life is to take shortcuts with their writing just to annoy people (i.e. me).
Re: Say, Lewis
The F35 would clearly well well ahead, right up to the point it caught fire, crashed and burned.
Microrapter 1 : F35 0.
Launch was 100% succesfull...
All 6 satellites were release to the correct orbit.
The bonus feature, booster return, well, the jury is still out on how well that went. Not yet enough information to know what happened.
Re: It's not a boat.
I agree on the back to the drawing board comment - it's complete bollocks. The author should be completely ashamed of that since its so far from what will happen, especially since the amount of data from SpaceX is simply 'Kaboom;' and 'we need to look at telemetry to see what happened'. How any professional journo who doesn't work the the Fail can equate that to back to the drawing board is beyond me.
Re: Detail for four USB ports controller?
It's pretty much the same chip, but with a 4 port hub. Cannot remember the part number but it's almost the same! The chips are actually pin compatible which is unusual.
Re: Ungrateful trolls
Mr Palmer (shades of NCIS?)
Your continual anti-Pi stance is tedious in the extreme. If you don't like them, don't buy them, but this incessant campaign against what is an educational charity is getting rather loathsome. I really don't know what they have done to you to cause this level of unpleasantness - did one of the Upton's tread on you in a previous incarnation? So as you have stated so many times, there are alternatives if you are willing to pay more and accept lower levels of support. So I suggest you do exactly that, and let the Raspberry Pi foundation do what they can to help with education and continue to sell millions of devices to an generally more than happy populace. The Raspberry is still the cheapest and best supported device out there, not the most powerful as you might expect given the low price, but certainly adequate for its many millions of users. Just accept it for what it is. You'll find the world a much more pleasant place.
Whilst there is nothing at all wrong with the Odroid, on which planet is $65 only a bit more than $35? That's nearly a 100% price hike! Ok for people with spare cash, not so good for people without.
People do need to remember that there is a huge range of SBC's out there, from low to high performance, with equivalent low to high prices. If you want cheap and cheerful, the Pi is great, if you want fast and expensive, there are boards out there for you (Odroid). There really is a spectrum, and you can buy what you need.
Aside from that spectrum of price and performance, look at support, both from the supplier and the community. In my opinion, the Raspberry beats a lot of the more expensive devices hands down. Also, third part add-ons are plentiful for the Raspi (and some other devices).
So, don't just look at the price per MFLOP.
Re: @Daniel Palmer
I'm under no assumptions about you at all.
This new version of the Raspi fixes the problem with hot plugging of USB.
FTDI chips should now work fine. That's the software fix I was talking about. If you are still seeing any problems and are using the very latest firmware and kernel (it appears your version is woefully out of date), please let the engineers know via the forum or via the firmware/kernel github reporting system.
SD cards wear out. Nothing the Foundation can do about that. There are techniques you can use to reduce the amount of accesses to the SD card which helps a lot.
Boo Hoo yourself.
Re: Ungrateful trolls
Expect they were. They were the interface from the ARM to the GPU hardware. Just not the sort of drivers people are used to.
Since you seem so well versed in SoC availability and what the market wants, why not design and build your own competitor?
Or are you one of those people happy to complain because product A doesn't do exactly what you want but not so happy to actually get off their arse and do something about it?
There are already competitors out there trying to compete on price with the Raspi. None of them are doing very well. The BBB sales are terrible, the Banana Pi infringes more trademarks that you can shake a stick at, the Cubie is great but expensive. The rest come under similar categories.
Consider - if there are all these great chips and devices out there, why isn't there a faster better Raspberry Pi competitor out there? It's been TWO YEARS. You would have thought there would be one by now. And yet there isn't one at the same price point, with anywhere near the same level of sales or support.
Maybe, just maybe, it's a little more difficult than you seem to think? Maybe, just maybe, the Raspberry Pi has hit the sweet spot of price vs performance and no-one else can reach it? Even with all those cheap as chips high performance ARM chips out there.
Re: Ungrateful trolls
I get nothing back for my shilling, at all (and I can prove it). And warning you that you are straying on to libellous grounds is not shilling, but simply a warning. You are implying the Foundation are lying about something. That can get YOU in to trouble. Not me.
There will be no fee for that legal advice. I work as a volunteer at this stuff.
As for numerous people calling them out, I think you will find that NOTHING the Foundation has said with regard to those drivers is untruthful. Nothing at all.
So, please STFU with your FUD, and that will mean us shills don't have to keep putting right all your incorrect statements and out of date information.
Your information on the USB is out of date. The huge majority of issues with it have been fixed. There are some corner cases where you might still have problems, but they are rare.
If you are going to continue to slag off the Raspberry Pi, please make sure your facts are correct first.
Re: Physical Size Change
There are already cases available for the new device, costing from bugger all to all of £10.
Not sure that maintaining backwards case compatibility is a good enough reason to cripple the new design.
More RAM and/more speed would have required a new SoC. And that would break a lot of backward compatibility (and wouldn't be a B+ but a C model).
This is an evolution so as not to require too much in the way of change. It basically fixes up most of the problems people had with the original device - lack of USB, connector placement and power supply.
@ JOhn Bailey
Well said sir!
Indeed - the prices are exactly the same, so you are actually getting more for your money. No need for a hub for example, so overall cost is actually lower.
Re: Extra usb ports?
Most of the USB issues are fixed with some rather splendid software effort from a couple of guys at the Foundation - it's rather good work.
However, you are still limited to a total bandwidth as previously. But the extra ports mean you can add keyboard, mouse, USB HW, wireless adapter without a hub, so that's the real benefit.
Oh No! Looks like the cat lovers have got the op deleted. (My first ever deletion - and it's on a cat subject. How odd....good job I never posted that Kickstarter campaign for a statue of Jimmy Saville)
Shame on you all. Please acquire a sense of humour. You'll find the internet a much better place with one.
Er, no point in down voting the comment on the thumb up/down state. You need to downvote the original post for it to be statistically pertinent.
A quick read of the Thumb up/down state....
More cat haters than lovers on here so far......Welcome to our Cat Detesting Overlords!
In other news, is there any way of harvesting energy from all those glass panels? Can you make them with tubes inside so you can run fluid through, then through a heat exchanger? Would take a lot of energy out of the rays before they get inside.
Hmm, going to have to look that up now.
Re: Conspicuous consumption at it's worst
Dubai is on the coast.
I'll let you fill in the details.
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