Nico Coesel wrote:> What is the problem with an 'out of date' kernel? If it works, it > works. Bug fixes can often be backported without much problems.Well, "if it works". We got caught by that with an ARM9 Linux board. The manufacturer's plan seemed to be to design bespoke products, then make some more money by offering the hardware on the open market (nothing wrong with that idea, IMHO.) But the original customer got a 2.4 kernel and wanted nothing more. USB was the major I/O on the board, and all the really useful USB features came in kernel version 2.6. We couldn't upgrade ourselves because of proprietary SD card drivers. The original customer didn't want an upgrade. The manufacturer wouldn't release an upgrade. There we were. Mini-ITX boards work just fine. Mel.
OLinuXino, a serious Rasberry Pi competitor?
Started by ●March 7, 2012
Reply by ●March 8, 20122012-03-08
Reply by ●March 8, 20122012-03-08
In article <9rqf87FadnU1@mid.individual.net>, 5V@2.5A says...> > On 08-Mar-12 11:51 AM, Nico Coesel wrote: > > Don McKenzie<5V@2.5A> wrote: > > > >> On 08-Mar-12 10:23 AM, Paul wrote: > >> > >>> Hopefully also unlike rPI have mounting holes and a decent power > >>> connector. > >> > >> http://www.olimex.com/about.html > >> > >> The company has over 20 years? experience in designing, prototyping and > >> manufacturing printed circuit boards, sub-assemblies, and complete > >> electronic products. > >> > >> I doubt very much if you will see any of these problems Paul. :-) > > > > You never know. I've worked with designers with 20+ years of > > experience who totally forget about mounting holes, forget about > > clearance around screw heads or move holes on the next batch while > > there are 100's of cases in stock with holes that match the 'old' > > version. Did I already mention small 2mm / 78mil mounting holes? If it > > where one project you might call it a mistake. On almost every project > > its a real nuisance. > > I just had a look at the RPi videos, and they seem to have mounting > holes and a DC power input plug. > > So I wonder what Paul was referring to. > > Cheers Don... > > ================All the pictures and user guide show NO mounting holes and was discussed early in rPI thread. Without ability to mount on or in something for education it will be a nightmare. Let alone more will be "lost" or is sometimes known as "trousered". Power is by MicroB USB connector, and takes 700mA according to User Guide. So I see a lot of problems with crappy cables being used to power it and PCs complaining about over current. -- Paul Carpenter | paul@pcserviceselectronics.co.uk <http://www.pcserviceselectronics.co.uk/> PC Services <http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font <http://www.gnuh8.org.uk/> GNU H8 - compiler & Renesas H8/H8S/H8 Tiny <http://www.badweb.org.uk/> For those web sites you hate
Reply by ●March 8, 20122012-03-08
On 3/8/2012 8:20 AM, Nico Coesel wrote:> > I see no mounting holes: > http://en.wikipedia.org/wiki/File:Raspberry_Pi_Beta_Board.jpg > > It would be very nice if the Olimex board becomes something like this > board: > http://www.conitec.net/english/linuxboard.php > > The board by Conitec is just too expensive. I did look at it to build > products around but the price was a showstopper. >I wonder if Conitec had portrayed their board as a educational non-profit board would they have had thousands of people clamoring to buy one, and the price would have dropped to a reasonable level ?? Building 100 of anything is expensive, build 10,000 can get cheap in a hurry. Just wondering....
Reply by ●March 8, 20122012-03-08
hamilton <hamilton@nothere.com> wrote:>On 3/8/2012 8:20 AM, Nico Coesel wrote: >> >> I see no mounting holes: >> http://en.wikipedia.org/wiki/File:Raspberry_Pi_Beta_Board.jpg >> >> It would be very nice if the Olimex board becomes something like this >> board: >> http://www.conitec.net/english/linuxboard.php >> >> The board by Conitec is just too expensive. I did look at it to build >> products around but the price was a showstopper. >> >I wonder if Conitec had portrayed their board as a educational >non-profit board would they have had thousands of people clamoring to >buy one, and the price would have dropped to a reasonable level ??Perhaps. But others boards are not really cheap either. However, the performance of the Conitec board is very poor. The same price will buy you a board with an 800MHz Cortex A8 CPU and 512MB of memory. It seems Conitec moved itself into the market of professional device programmers. Over a decade ago I bought one of their Galep programmers. Really nice but nowadays you can buy a Chinese programmer for 1/10th the price Conitec is charging.>Building 100 of anything is expensive, build 10,000 can get cheap in a >hurry.Exactly. Imagine being able to put something together on a piece of stripboard or a PCB you etch yourself and put some real processing horsepower into it for a small amount of money. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
Reply by ●March 8, 20122012-03-08
On 09-Mar-12 2:20 AM, Nico Coesel wrote:>>> I just had a look at the RPi videos, and they seem to have mounting >>> holes and a DC power input plug. >>> >>> So I wonder what Paul was referring to. >>> >>> Cheers Don... >> >> I don't think that it has mounting holes, DC power is via a micro USB >> connector. > > I see no mounting holes: > http://en.wikipedia.org/wiki/File:Raspberry_Pi_Beta_Board.jpghttp://www.youtube.com/watch?v=TgR74Kp6Ws4 was the first video found by google, and it has a power plug and holes. Have removed both in later versions? Cheers Don... =================== -- Don McKenzie Dontronics: http://www.dontronics-shop.com/ DuinoMite the PIC32 $35 Basic Computer-MicroController http://www.dontronics-shop.com/the-maximite-computer.html Just add a VGA monitor or TV, and PS2 Keyboard. Arduino Shield, Programmed in Basic, or C.
Reply by ●March 8, 20122012-03-08
On 3/8/2012 10:44 AM, Don McKenzie wrote:> On 09-Mar-12 2:20 AM, Nico Coesel wrote: > >>>> I just had a look at the RPi videos, and they seem to have mounting >>>> holes and a DC power input plug. >>>> >>>> So I wonder what Paul was referring to. >>>> >>>> Cheers Don... >>> >>> I don't think that it has mounting holes, DC power is via a micro USB >>> connector. >> >> I see no mounting holes: >> http://en.wikipedia.org/wiki/File:Raspberry_Pi_Beta_Board.jpg > > http://www.youtube.com/watch?v=TgR74Kp6Ws4 > was the first video found by google, and it has a power plug and holes. > > Have removed both in later versions? > > Cheers Don... > > =================== > >I think an opportunity to make a plastic case that captures this board with holes for the connectors. (won't need holes in the board) Maybe that's what they were thinking of doing, get another revenue source flowing.
Reply by ●March 8, 20122012-03-08
Don McKenzie <5V@2.5A> wrote:>On 09-Mar-12 2:20 AM, Nico Coesel wrote: > >>>> I just had a look at the RPi videos, and they seem to have mounting >>>> holes and a DC power input plug. >>>> >>>> So I wonder what Paul was referring to. >>>> >>>> Cheers Don... >>> >>> I don't think that it has mounting holes, DC power is via a micro USB >>> connector. >> >> I see no mounting holes: >> http://en.wikipedia.org/wiki/File:Raspberry_Pi_Beta_Board.jpg > >http://www.youtube.com/watch?v=TgR74Kp6Ws4 >was the first video found by google, and it has a power plug and holes. > >Have removed both in later versions?This is clearly a Broadcom evaluation board. Not the RP itself. -- Failure does not prove something is impossible, failure simply indicates you are not using the right tools... nico@nctdevpuntnl (punt=.) --------------------------------------------------------------
Reply by ●March 8, 20122012-03-08
On 9/03/2012 3:00 AM, Paul wrote:> In article<9rqf87FadnU1@mid.individual.net>, 5V@2.5A says... >> >> On 08-Mar-12 11:51 AM, Nico Coesel wrote: >>> Don McKenzie<5V@2.5A> wrote: >>> >>>> On 08-Mar-12 10:23 AM, Paul wrote: >>>> >>>>> Hopefully also unlike rPI have mounting holes and a decent power >>>>> connector. >>>> >>>> http://www.olimex.com/about.html >>>> >>>> The company has over 20 years? experience in designing, prototyping and >>>> manufacturing printed circuit boards, sub-assemblies, and complete >>>> electronic products. >>>> >>>> I doubt very much if you will see any of these problems Paul. :-) >>> >>> You never know. I've worked with designers with 20+ years of >>> experience who totally forget about mounting holes, forget about >>> clearance around screw heads or move holes on the next batch while >>> there are 100's of cases in stock with holes that match the 'old' >>> version. Did I already mention small 2mm / 78mil mounting holes? If it >>> where one project you might call it a mistake. On almost every project >>> its a real nuisance. >> >> I just had a look at the RPi videos, and they seem to have mounting >> holes and a DC power input plug. >> >> So I wonder what Paul was referring to. >> >> Cheers Don... >> >> ================ > > All the pictures and user guide show NO mounting holes and was discussed > early in rPI thread. Without ability to mount on or in something for > education it will be a nightmare. Let alone more will be "lost" or > is sometimes known as "trousered". > > Power is by MicroB USB connector, and takes 700mA according to User > Guide. So I see a lot of problems with crappy cables being used to power > it and PCs complaining about over current. >Why would you want to power it from a PC? A wall wart would be a much better idea, it is a standalone system after all it doesn't need a PC connection to program it like an Arduino.
Reply by ●March 8, 20122012-03-08
In article <4f59230c$1@dnews.tpgi.com.au>, keith@nowhere.com.au says...> > On 9/03/2012 3:00 AM, Paul wrote: > > In article<9rqf87FadnU1@mid.individual.net>, 5V@2.5A says... > >> > >> On 08-Mar-12 11:51 AM, Nico Coesel wrote: > >>> Don McKenzie<5V@2.5A> wrote: > >>> > >>>> On 08-Mar-12 10:23 AM, Paul wrote: > >>>> > >>>>> Hopefully also unlike rPI have mounting holes and a decent power > >>>>> connector. > >>>> > >>>> http://www.olimex.com/about.html > >>>> > >>>> The company has over 20 years? experience in designing, prototyping and > >>>> manufacturing printed circuit boards, sub-assemblies, and complete > >>>> electronic products. > >>>> > >>>> I doubt very much if you will see any of these problems Paul. :-) > >>> > >>> You never know. I've worked with designers with 20+ years of > >>> experience who totally forget about mounting holes, forget about > >>> clearance around screw heads or move holes on the next batch while > >>> there are 100's of cases in stock with holes that match the 'old' > >>> version. Did I already mention small 2mm / 78mil mounting holes? If it > >>> where one project you might call it a mistake. On almost every project > >>> its a real nuisance. > >> > >> I just had a look at the RPi videos, and they seem to have mounting > >> holes and a DC power input plug. > >> > >> So I wonder what Paul was referring to. > >> > >> Cheers Don... > >> > >> ================ > > > > All the pictures and user guide show NO mounting holes and was discussed > > early in rPI thread. Without ability to mount on or in something for > > education it will be a nightmare. Let alone more will be "lost" or > > is sometimes known as "trousered". > > > > Power is by MicroB USB connector, and takes 700mA according to User > > Guide. So I see a lot of problems with crappy cables being used to power > > it and PCs complaining about over current. > > > Why would you want to power it from a PC? A wall wart would be a much > better idea, it is a standalone system after all it doesn't need a PC > connection to program it like an Arduino.Firstly it is suggested by them to use an MP3/camera/phone USB to microB cable in the user guide. Secondly the base price does not include a wall wart. I don't think it even includes a USB cable either. Thirdly because that is what people WILL be doing A classromm with computers already why get out wall warts (which at least one kid will trouser as he could do with one or thjinks it will be cool). A classroom with other computers already there teacher does not have to hand out an extra thing. People at home forget to get a wall wart or take board to show someone else or nerdy kid takes with him to 'play' with elsewhere and forgets wall wart. Someone travelling between countries and different shaped holes in walls so wall wart does not work. -- Paul Carpenter | paul@pcserviceselectronics.co.uk <http://www.pcserviceselectronics.co.uk/> PC Services <http://www.pcserviceselectronics.co.uk/fonts/> Timing Diagram Font <http://www.gnuh8.org.uk/> GNU H8 - compiler & Renesas H8/H8S/H8 Tiny <http://www.badweb.org.uk/> For those web sites you hate
Reply by ●March 8, 20122012-03-08
On 9/03/2012 8:54 AM, Paul wrote:> In article<4f59230c$1@dnews.tpgi.com.au>, keith@nowhere.com.au says... >> >> On 9/03/2012 3:00 AM, Paul wrote: >>> In article<9rqf87FadnU1@mid.individual.net>, 5V@2.5A says... >>>> >>>> On 08-Mar-12 11:51 AM, Nico Coesel wrote: >>>>> Don McKenzie<5V@2.5A> wrote: >>>>> >>>>>> On 08-Mar-12 10:23 AM, Paul wrote: >>>>>> >>>>>>> Hopefully also unlike rPI have mounting holes and a decent power >>>>>>> connector. >>>>>> >>>>>> http://www.olimex.com/about.html >>>>>> >>>>>> The company has over 20 years? experience in designing, prototyping and >>>>>> manufacturing printed circuit boards, sub-assemblies, and complete >>>>>> electronic products. >>>>>> >>>>>> I doubt very much if you will see any of these problems Paul. :-) >>>>> >>>>> You never know. I've worked with designers with 20+ years of >>>>> experience who totally forget about mounting holes, forget about >>>>> clearance around screw heads or move holes on the next batch while >>>>> there are 100's of cases in stock with holes that match the 'old' >>>>> version. Did I already mention small 2mm / 78mil mounting holes? If it >>>>> where one project you might call it a mistake. On almost every project >>>>> its a real nuisance. >>>> >>>> I just had a look at the RPi videos, and they seem to have mounting >>>> holes and a DC power input plug. >>>> >>>> So I wonder what Paul was referring to. >>>> >>>> Cheers Don... >>>> >>>> ================ >>> >>> All the pictures and user guide show NO mounting holes and was discussed >>> early in rPI thread. Without ability to mount on or in something for >>> education it will be a nightmare. Let alone more will be "lost" or >>> is sometimes known as "trousered". >>> >>> Power is by MicroB USB connector, and takes 700mA according to User >>> Guide. So I see a lot of problems with crappy cables being used to power >>> it and PCs complaining about over current. >>> >> Why would you want to power it from a PC? A wall wart would be a much >> better idea, it is a standalone system after all it doesn't need a PC >> connection to program it like an Arduino. > > Firstly it is suggested by them to use an MP3/camera/phone USB to microB > cable in the user guide. > > Secondly the base price does not include a wall wart. I don't think it > even includes a USB cable either.A wall wart with included micro USB connector costs less that 10 bucks. That is if you don't have one already, virtually every smartphone other than Apple's products use them as a charger.> Thirdly because that is what people WILL be doingWhat makes you think that? It makes no sense to do so> A classromm with computers already why get out wall warts (which at > least one kid will trouser as he could do with one or thjinks it will be > cool).Not if they have a bunch at home already> A classroom with other computers already there teacher does not have > to hand out an extra thing.You don't hand them out, they are set up in the computer lab already along with the screen, mouse and keyboard.> People at home forget to get a wall wart or take board to show someone > else or nerdy kid takes with him to 'play' with elsewhere and forgets > wall wart.USB wall warts are ubiquitous.> Someone travelling between countries and different shaped holes in walls > so wall wart does not work.Most USB wall warts are of the universal voltage type, you just buy a cheap adaptor. I even have one that came with slip in connectors that cover 90% of the power sockets in use in the world.
