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  • Question: SBC computers.

    How do you power these things?
    do you need a backplane or does it have a standard ATX plug?
    If you owned or used one, could you give an opinion on what is an ideal clock speed for carputing?

  • #2
    There are a variety of SBCs with a variety of ways to power it. Some power through a backplane, some ATX, and there even are those with a 12v plug. You're better off just determining how you would like to power one, and only search for those products.

    As for ideal clock speed for carputing, that's not dependent on SBCs as this affects all carpcs. Your ideal clock speed is what you plan to do with it. Just mp3s (headless, even) you wouldn't need anything faster than a pentium 133, I'd imagine. You probably would want to instead ask 'what's the ideal clock speed for processing x, y, and z' as "carputing" covers so much ground and too vague to give any sort of answer for.
    Gen 1: Pentium 3 1GHz - ATX - 2005
    Gen 2: Pentium M 1.6GHz - ITX - 2006
    Gen 3: Pentium M 2.0GHz - 5.25" SBC - 2007
    Gen 4: (coming soon: Core2 Duo - 3.5" SBC - 2009)
    ...it never ends

    Comment


    • #3
      Both the SBC systems I have had were powered through a hard drive molex connector.

      My first SBC system was a 233MHz Pentium MMX. It was adequate for what I wanted to do (play music).

      My second system is a 1GHz Via C3 LP. It is also adequate for what I want to do (Music, GPS, servo control for heater controls).
      Old Systems retired due to new car
      New system at design/prototype stage on BeagleBoard.

      Comment


      • #4
        Thanks for the prompt reply guys.
        I've been looking around for a nice little SBC to do some protyping for my car.
        I'm having problem finding one thats about 800-1000mhz and fits a 6.5" x 5" enclosure. Any suggestion?
        Oh, by the way, does all SBC works with windows XP? or they only uses some kind of embedded systems?
        thanks again.

        Comment


        • #5
          very quick search on ebay:
          eBay: Nexcom Peak 703P Pentium M Half Size PISA SBC Brand NEW (item 300092523725 end time Mar-27-07 10:37:19 PDT)
          pentium m, looks pretty small but no idea of real size. their site says win2k support, winxp might work.

          eBay: AVDANTECH PCM-9373 3.5" SBC (item 320096121153 end time Mar-27-07 23:45:02 PDT)
          really small (the 3.5" sbc will definitely fit your size spec), eden 667 cpu, so on the slower side, but it's a nice sbc all the same.

          you really should stop phrasing your questions with a sense of "all". computers are different and there will be some that work, and some that don't. look for drivers as a clue if it'll work cuz *that's* what will hold you back. It's like any computer, really!
          Gen 1: Pentium 3 1GHz - ATX - 2005
          Gen 2: Pentium M 1.6GHz - ITX - 2006
          Gen 3: Pentium M 2.0GHz - 5.25" SBC - 2007
          Gen 4: (coming soon: Core2 Duo - 3.5" SBC - 2009)
          ...it never ends

          Comment


          • #6
            "widefault" has a few for sale and he uses them for all sorts of things.
            System always under construction


            Comment


            • #7
              Originally posted by Punky View Post
              Thanks for the prompt reply guys.
              I've been looking around for a nice little SBC to do some protyping for my car.
              I'm having problem finding one thats about 800-1000mhz and fits a 6.5" x 5" enclosure. Any suggestion?
              Oh, by the way, does all SBC works with windows XP? or they only uses some kind of embedded systems?
              thanks again.
              Originally posted by Robs Sig
              New system : 6x5x2" contains 1GHz C3 PCM9373 ...
              Very easy to find a system that small. Advantech site is full of them...!
              Attached Files
              Old Systems retired due to new car
              New system at design/prototype stage on BeagleBoard.

              Comment


              • #8
                I will give widefault a shout. thanks for the info.

                I was looking at the advantech site yesterday and your setup as well.
                I couldn't figure if there were any driver availible for these setup with winXP.
                There were no information on the advantech website regarding the OS, and from ur spec your system is running win98.
                From the picture that setup is beautiful. Mind if i ask how much you paid for it? and where?

                Comment


                • #9
                  Originally posted by Punky View Post
                  Mind if i ask how much you paid for it? and where?
                  "How much" is below (from memory). "Where" is all over (it's not an off the shelf thing that you just go and buy)

                  Cpu:

                  Motherboard was about 230 from Sempahore Systems
                  256MB SODIMM Ram was cheap from dabs.com
                  512MB Disk-on-module was about 50 Miles Industrial Electronics Ltd
                  8Gb compact flash hard drive was about 90
                  Case was about 5 from Maplin (trimmed aluminium project box).
                  Fans were about 10 from Maplin (hard drive bay cooler).
                  PSU and servo controller is custom design and build (less than 50 of parts, mostly salvaged from my last system).

                  Screen (not pictured):

                  LTM08C351 was 26 for 2 panels from ebay (I got very lucky indeed).
                  Touch panel and controller was about 100 from Miles Industrial Electronics Ltd
                  Backlight inverter was about 20 from Miles Industrial Electronics Ltd

                  Servos:

                  About 15 from ebay. High torque, steel geared.
                  Old Systems retired due to new car
                  New system at design/prototype stage on BeagleBoard.

                  Comment


                  • #10
                    If you are nervous about whether or not you will have enough power, check this board out : LS-371 - 3.5" Embedded Intel Core 2 Duo Miniboard Computer from BVM Limited has built-in dc regulator 8-21vdc.
                    Not doing carpc anymore

                    Comment


                    • #11
                      Thanks for all the infos, i'm looking into one right now.
                      power wise, i think the opus 150W i have at the moment shouldn't have any problem.
                      dopehead's board looks super, but something like that is going to cost me an arm and a leg.
                      How much did you purchase ur for?
                      Brian.

                      Comment


                      • #12
                        I've been playign with SBCs for quite some time now. Here's the deal.

                        There are 3 main types

                        PICMG- requires backplane usually, also the largest size (full size). easiest to add a PCi card to as it uses a backplane
                        Half size PCI/ISA- usually takes a 4 pin molex or Aux 6 pin aux or even a full ATX. Can be attached to passive backplane or riser to add more PCI cards. MUCH smaller (half the size) of a PICMG
                        Biscuit- same as the PCI, usually in 3.5 or 5.25 sizes. Sometimes has a PCI slot built in.

                        For carputing, i would suggest a s370 model. Go either celeron or p3 at 800-1.4ghz, if you can support it. Pay close attention to the bus speed and everything as you want to pick the best processor for your board. Also, pay attention to whether it takes Sodimms or SDRAM. Sodimms are smaller and take less power, but are more expensive. The only good news is that you can more readily resell them for older laptop users and at a premium due to their rarity.

                        I do have a friend who had one for sale, a full size with backplane, and i had one for sale, w/o backplane but i could get you in contact with my seller.

                        SBCs are easy to set up- just read the directions
                        Carputer Progress: Here we go again...

                        THE GF THEME
                        Genesis has speed
                        Genesis has class
                        Genesis sent money
                        before your a__;)

                        Join the fight against carputters. EMAIL ME!

                        Comment


                        • #13
                          You pretty much nailed it there Genesisfactor. I've been researching for the last couple of days, and you put it all together for me.
                          I looked at a few site looking for the s370 model, but no hard spec on it. (which brand is it?) and they look really long. Remember my spec has to be under 7" x 5" maximum. i might be able to do (7" x 6") but thats pushing it.
                          I'd much prefer one without a backplane, i'd like it to be as small as possible.
                          I'll look into it some more. Right now, i'm waiting for a few suppliers to send me some quotes.
                          Again, thanks for all your informative replies.

                          Comment


                          • #14
                            Mine is a slightly older version which is mini-itx and not 3,5 inch sbc size....it cost around 179 for the mobo...
                            Not doing carpc anymore

                            Comment


                            • #15
                              punky, i suggest- STONGLY SUGGEST ebay. These boards retail to $300-$700. I'm not paying that much and niether should you. The PM-4 ones are also really nice, but will ebay for over $100. Your wallet size dictates what you get. Which brand to get, its relly up to you, but advantech seems to be a hot one. I had bad experiences with their customer support who weren't too friendly when i asked questions outside their normal ones. look for 4 main things

                              On board video
                              USB 2.0
                              Tualutin support
                              max ram suported

                              You don't want to be stuck running xp on a board that supports only 256MB ram. For size, i have both a sodimm and an SDRAM model and it really doesn't matter as the heat sinks usually are as tall as the ram.

                              Also, a nice feature that i usually look for is CF slots or pc104. CF measn it can boot off solid state. PC104 allows you to insert add on cards to your boards, lke PC card slots, and other modules.

                              Just remember that some vias are s370, so buying them, if the board supports it, may net you an extra processor to sell when you swap itout. Make sure to find and read the user's manuals or datasheets. You don't have a problem searching, which is good, so this s no big task to you. If you can't find a datasheet, call the company. They have em and will email them to you.

                              That should start you off right. basically, this method has netted me some $70-$100 carputers.

                              Now, power is somewhat tricky. On the 4 pin molexes, these suckers run LOW, i'm talking, 28-40W with everything installed. Some PSUs can't handly that if they don't have load on hte ATX side of things. They need load to work. THis usually applies to regualr coputer PSUs. I'm just saying, be careful
                              Carputer Progress: Here we go again...

                              THE GF THEME
                              Genesis has speed
                              Genesis has class
                              Genesis sent money
                              before your a__;)

                              Join the fight against carputters. EMAIL ME!

                              Comment

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