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  • New Product: p5USB Hub



    Goce from mp3Car shows the advantages to the p5USB hub
    http://store.mp3car.com/DC_Powered_4..._p/adt-015.htm

    Features include:
    Take voltage from 7-32 volts
    guaranteed 500 mA to each port.
    Each port has it's own self resetting fuse
    Reverse polarity protection
    startup and shutdow controller
    Delayed startup and shutdown (5 min and 25 min)

    http://store.mp3car.com/DC_Powered_4..._p/adt-015.htm

  • #2
    $85 for something you can put together for ~$20? (minus the startup/shutdown timer)
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    • #3
      Originally posted by justchat_1 View Post
      $85 for something you can put together for ~$20? (minus the startup/shutdown timer)
      if it were THAT simple.. there'd be someone on this board with it done already... and they'd probably be selling it as well. Having used this board for 2 weeks now i can say its easily the most hassle-free hub i've used in the car since starting this hobby. You set it and it handles usb devices the same way every time. Not many usb hubs available give you that kind of reliability in the automotive environment
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      • #4
        Originally posted by Sonicxtacy02 View Post
        if it were THAT simple.. there'd be someone on this board with it done already... and they'd probably be selling it as well. Having used this board for 2 weeks now i can say its easily the most hassle-free hub i've used in the car since starting this hobby. You set it and it handles usb devices the same way every time. Not many usb hubs available give you that kind of reliability in the automotive environment
        I'm doing it. And a few other people already have, although with linear regulators. All we need is a simple USB hub (have it, $1.99), and a simple power converter (working on it). I am figuring out the value of the inductors and working on it. It won't look as pretty and it won't be done for a long time, but it will work very damn well.

        All you need is a converter chip from somewhere like Maxim and a simple circuit. Use their calculators to determine power and it should cost you say $20 alltogether without a fancy circuit board or a case. I refuse to pay $65 extra so that some companies can profit off of a case and circuit board that nobody will ever see.
        2001 Mustang Convertible Worklog
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        • #5
          Originally posted by colin View Post
          I'm doing it. And a few other people already have, although with linear regulators. All we need is a simple USB hub (have it, $1.99), and a simple power converter (working on it). I am figuring out the value of the inductors and working on it. It won't look as pretty and it won't be done for a long time, but it will work very damn well.

          All you need is a converter chip from somewhere like Maxim and a simple circuit. Use their calculators to determine power and it should cost you say $20 alltogether without a fancy circuit board or a case. I refuse to pay $65 extra so that some companies can profit off of a case and circuit board that nobody will ever see.
          Sounds great! Lots of people don't know how to do this, so make sure you post up instructions and diagrams for how to do this. Will your timer be able to be set for varying values? How are you handling reverse polarity rotectipn?
          Originally posted by ghettocruzer
          I was gung ho on building a PC [until] just recently. However, between my new phone having internet and GPS and all...and this kit...Im starting to have trouble justfiying it haha.
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          • #6
            Originally posted by Sonicxtacy02 View Post
            if it were THAT simple.. there'd be someone on this board with it done already... and they'd probably be selling it as well. Having used this board for 2 weeks now i can say its easily the most hassle-free hub i've used in the car since starting this hobby. You set it and it handles usb devices the same way every time. Not many usb hubs available give you that kind of reliability in the automotive environment
            Just because no one sells it doesn't mean its not very easy to do.

            I picked up one of these:
            http://cgi.ebay.com/Step-Down-DC-Con...#ht_3470wt_939

            and use it with a 7 port usb hub - works perfectly...grand total ~$8.
            openMobile - An open source C# Front End (why choose openMobile?)
            - Always Recruiting Developers -
            Like what you see? Donations are always welcome

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            • #7
              Originally posted by justchat_1 View Post
              Just because no one sells it doesn't mean its not very easy to do.

              I picked up one of these:
              http://cgi.ebay.com/Step-Down-DC-Con...#ht_3470wt_939

              and use it with a 7 port usb hub - works perfectly...grand total ~$8.
              That link shows it for almost $15 after shipping. Am I missing something?

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              • #8
                Originally posted by justchat_1 View Post
                Just because no one sells it doesn't mean its not very easy to do.

                I picked up one of these:
                http://cgi.ebay.com/Step-Down-DC-Con...#ht_3470wt_939

                and use it with a 7 port usb hub - works perfectly...grand total ~$8.
                Oh wow, that seems a lot simpler than doing calculations and figuring out how to power the hub! Thanks!
                2001 Mustang Convertible Worklog
                Indigo Custom Frontend (Flash/Delphi)
                Blog

                Qube v1.3 Now Available at the mp3Car Store!!!!!!
                The simplest IO controller you'll ever use!

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                • #9
                  Originally posted by justchat_1 View Post
                  Just because no one sells it doesn't mean its not very easy to do.

                  I picked up one of these:
                  http://cgi.ebay.com/Step-Down-DC-Con...#ht_3470wt_939

                  and use it with a 7 port usb hub - works perfectly...grand total ~$8.
                  does that guarantee you 500ma per port? Does that have startup/shutdown options? Is it guaranteed to survive crank? Is it designed to handle each usb devices event after hibernation. Hell for that matter is it all-n-one? Some of those things dont matter to people but they all are included with the carnetix device. If it WERE easy to duplicate the product wouldnt exist at its current price point. Demand will always drive a price down and the demand should be high for a device thats the first of its kind. I mean cmon anyone remember the price on the first series of lilliputs(400) and xenarcs(450+). Or how about the first DC power supplies.
                  mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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                  • #10
                    Originally posted by Sonicxtacy02 View Post
                    does that guarantee you 500ma per port? Does that have startup/shutdown options? Is it guaranteed to survive crank? Is it designed to handle each usb devices event after hibernation. Hell for that matter is it all-n-one? Some of those things dont matter to people but they all are included with the carnetix device. If it WERE easy to duplicate the product wouldnt exist at its current price point. Demand will always drive a price down and the demand should be high for a device thats the first of its kind. I mean cmon anyone remember the price on the first series of lilliputs(400) and xenarcs(450+). Or how about the first DC power supplies.
                    Seriously, for the price difference of $65, are those features worth it? Sure, you can buy a $2000 60" LCD that has a brilliant picture, or you can spend an extra $1000 and get one with picture-in-picture and an alarm in the morning. Far off comparison, sure, but that one was only a 50% price increase, this is from $20 (and the satisfaction of doing it yourself) and $85.

                    Guaranteed 500mA per port? Are you really going to use that? If so, YES. They are good up the 3A at 93% efficiency.

                    Startup/shutdown? Add a relay onto your PSU and yes, thats an extra dollar.

                    Survive crank? If crank goes less than 7v, then no. But wait, your computer power supply wont survive crank below 7v anyway! (I know it says 6v input, but thats at REALLY low power levels -- anything above 2A requires at least 7v -- same for the DC-DC converter in question).

                    Hibernation? Sure, use the right USB hub. I mean, the power supply is only $10, you have $10 to get a decent 4-port USB hub. I'm POSITIVE there are some out there that survive hibernation (my cheap $0.99 eBay 7-port one does).

                    I understand your point, but from a very electronics-oriented background, this is easily doable.
                    2001 Mustang Convertible Worklog
                    Indigo Custom Frontend (Flash/Delphi)
                    Blog

                    Qube v1.3 Now Available at the mp3Car Store!!!!!!
                    The simplest IO controller you'll ever use!

                    Comment


                    • #11
                      Originally posted by colin View Post
                      Seriously, for the price difference of $65, are those features worth it? Sure, you can buy a $2000 60" LCD that has a brilliant picture, or you can spend an extra $1000 and get one with picture-in-picture and an alarm in the morning. Far off comparison, sure, but that one was only a 50% price increase, this is from $20 (and the satisfaction of doing it yourself) and $85.

                      Guaranteed 500mA per port? Are you really going to use that? If so, YES. They are good up the 3A at 93% efficiency.

                      Startup/shutdown? Add a relay onto your PSU and yes, thats an extra dollar.

                      Survive crank? If crank goes less than 7v, then no. But wait, your computer power supply wont survive crank below 7v anyway! (I know it says 6v input, but thats at REALLY low power levels -- anything above 2A requires at least 7v -- same for the DC-DC converter in question).

                      Hibernation? Sure, use the right USB hub. I mean, the power supply is only $10, you have $10 to get a decent 4-port USB hub. I'm POSITIVE there are some out there that survive hibernation (my cheap $0.99 eBay 7-port one does).

                      I understand your point, but from a very electronics-oriented background, this is easily doable.
                      it should be clear they arent marketing this to you if the features arent something you use. I understand that it can be done for far CHEAPER.. but its no different from people that can build there own PC for cheap versus people that buy computers.
                      mp3Car.com Senior Tech Blogger (Want a product reviewed? Contact me.)
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                      • #12
                        There are some other people talking about USB hacking and cheaper hacked solutions over in this thread. I made a response in this post which might be relevant to some of your comments.

                        Comment


                        • #13
                          Originally posted by Sonicxtacy02 View Post
                          it should be clear they arent marketing this to you if the features arent something you use. I understand that it can be done for far CHEAPER.. but its no different from people that can build there own PC for cheap versus people that buy computers.
                          If people who bought computers spent 3x as much as people who built them themselves it would be a fair argument-but thats clearly not the case.

                          I may be a computer engineer - but its incredibly simple for the average person to replicate every feature but the startup and shutdown controller. I can further estimate from that circuit board pic I saw in another thread that mass produced these boards cost about $30-40 each...and they charge $85!! Please try telling me how thats anything short of taking advantage of people.
                          openMobile - An open source C# Front End (why choose openMobile?)
                          - Always Recruiting Developers -
                          Like what you see? Donations are always welcome

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                          • #14
                            We thought there might be some value in putting this all together in one package. If you are on a budget, looking for a hobby, or trying to find a use for spare parts we certainly won't be angry if you want to build your own hack or even post a diagram and parts list about how to build your own for less money. Some people might like to focus on other parts of their install and have this part done quickly and reliably. The preassembled option is there, should it fit your needs, budget, and schedule.

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                            • #15
                              Originally posted by justchat_1 View Post
                              If people who bought computers spent 3x as much as people who built them themselves it would be a fair argument-but thats clearly not the case.

                              I may be a computer engineer - but its incredibly simple for the average person to replicate every feature but the startup and shutdown controller. I can further estimate from that circuit board pic I saw in another thread that mass produced these boards cost about $30-40 each...and they charge $85!! Please try telling me how thats anything short of taking advantage of people.
                              As much as I disagree with the price, its not taking advantage of people. It's offering convenience at a price. Some people are willing to pay that price, and that's how the company makes money. Some people (like us) are not willing to pay that price, and we are encouraged to "hack" together our own solutions. I mean, there are a lot of overhead costs: design, packaging, enclosure, testing, sales, evaluations, etc.
                              2001 Mustang Convertible Worklog
                              Indigo Custom Frontend (Flash/Delphi)
                              Blog

                              Qube v1.3 Now Available at the mp3Car Store!!!!!!
                              The simplest IO controller you'll ever use!

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