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  • Taking the plunge...

    Hello people

    After extensive reading on the odroid board here on mp3car and doing some digging of my own I have decided to take the plunge and went ahead and ordered myself a bunch of goodies.

    I have ordered the new ODROID-U3 Community Edition along with wifi,bt,case, emmc with android and some cable thingies. setting me back $160 including shipping
    Also ordered a 20000 mAh battery from a german dude on ebay, it has a usb in rated 1A and dual usb output, one rates 1.1A the other 2.1A. this cost me $40 ish
    For the time being I will be testing it on me home test machine , which only has a vga in on the monitor so I ordered a micro hdmi to vga thingie for $10

    I am right now feeling very happy with my purchases and cant wait to start this build , as far as I know I have most of the stuff I need on the hardware side of things, but if anyone has useful input I will take it into consideration.


    As soon as I get my new toys I will be giving myself a crash course android programming (and linux of course), I am excited about it but at the same time a bit afraid of this daunting task.

    I guess this will become my new worklog


    Pics will follow when I get my stuff but I had to post now in all my excitement
    View my worklog here

  • #2
    I've been planning somethig similar and will be ordering the Odroid-U2 or Odroid-XU soon. I'll be interested to see what you end up doing.

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    • #3
      This odroid thing that i ve first seen on the other thread got me very impressed. this is my next project on the next car...! what capacity emmc did you buy ?
      Vw Sharan 2007 1.9tdi || Exide 100Ah
      Fuzzy 945gme + core duo T2400 + 2gb ddr 667 + pci nvidia 5500 256mb + kingston v300 60gb + hdd 2.5" 100gb 5400 + Sure Gps module
      Primary monitor 8" 800x600 || Secondary monitor 15.4" 1280x800
      Powered by M2 atx

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      • #4
        I bought the 16GB emmc , this for financial reasons, the 64GB emmc was a bit too pricey and I was thinking of converting my ssd into a usb external drive , that will give me an additional 32GB.

        here is a pic of the battery I bought

        Click image for larger version

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        View my worklog here

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        • #5
          Originally posted by Happy_Feet View Post
          This odroid thing that i ve first seen on the other thread got me very impressed.
          Please, did you have a link to that thread? Sounds interesting...

          Comment


          • #6
            Originally posted by burningstep View Post
            Please, did you have a link to that thread? Sounds interesting...
            this is the thread.


            i just google it ( the odroid i mean ) and read on it's site the rest.
            Vw Sharan 2007 1.9tdi || Exide 100Ah
            Fuzzy 945gme + core duo T2400 + 2gb ddr 667 + pci nvidia 5500 256mb + kingston v300 60gb + hdd 2.5" 100gb 5400 + Sure Gps module
            Primary monitor 8" 800x600 || Secondary monitor 15.4" 1280x800
            Powered by M2 atx

            Comment


            • #7
              if you go to the mp3car.com homepage you can see the blogs made by sonicxtacy about adroid computing.

              He made several blogs about the different aspects of this sort of build, also the source of my inspiration and information
              View my worklog here

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              • #8
                Cool, thank you guys, will have a look...

                Gesendet von meinem HTC One mit Tapatalk

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                • #9
                  What's the battery for? I don't understand why you need that.

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                  • #10
                    I will use the battery to create an always on scenario for my odroid board.
                    I will use tasker to set the board to a minimal state as soon as tasker detects that my phone disconnects, wifi, gps etc will turn off , and android will be set to a minimal power using state.

                    The screen will turn off and on with the ignition so thats taken care off as well.

                    The benefit will be that when my phone connects to the odroid device I will have an instant on scenario, as soon as I get the hardware parts I will be testing how long the board can survive on a full battery in sleep mode.

                    another reason is a power supply one, my current screen is connected to the iso connector of the original radio , with a simple module in between that makes 12V out of the 14.1 that comes out of the iso block.

                    But the odroid needs 5V, and according to hardkernel it will be between 1A and 2A depending on connected peripherals , the battery has a 2.1A out and a 1A in.
                    I have a usb charger that connects to the cigarette lighter, wich produces 1.1A at 5V , so I am hoping this setup will eliminate any need for a new (pricey) power supply.
                    Last edited by eugenweij; 02-08-2014, 04:23 AM.
                    View my worklog here

                    Comment


                    • #11
                      Originally posted by eugenweij View Post
                      I will use the battery to create an always on scenario for my odroid board.
                      I will use tasker to set the board to a minimal state as soon as tasker detects that my phone disconnects, wifi, gps etc will turn off , and android will be set to a minimal power using state.

                      The screen will turn off and on with the ignition so thats taken care off as well.

                      The benefit will be that when my phone connects to the odroid device I will have an instant on scenario, as soon as I get the hardware parts I will be testing how long the board can survive on a full battery in sleep mode.

                      another reason is a power supply one, my current screen is connected to the iso connector of the original radio , with a simple module in between that makes 12V out of the 14.1 that comes out of the iso block.

                      But the odroid needs 5V, and according to hardkernel it will be between 1A and 2A depending on connected peripherals , the battery has a 2.1A out and a 1A in.
                      I have a usb charger that connects to the cigarette lighter, wich produces 1.1A at 5V , so I am hoping this setup will eliminate any need for a new (pricey) power supply.
                      Just seems that with maybe a 3-4 amp current draw including the screen (although when the vehicle is powered off the screen would be off so then what 2amp?) It would take quite some time to actually drain the battery? Unless the car is going to be off for weeks at a time?

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                      • #12
                        yeah it would take quite some time to drain the battery, 20000 mAh is a discharge of 20Ah , 20 amps per hour , so when the odroid board is on and taking the full 2A current draw it would take 10 hours to drain the battery.

                        at least thats the calculations I found with google.

                        and my screen is powered separately and turns off when the ignition is turned off.

                        One step in the testing will be measuring how much milliamps the odroid needs when in sleep, then I will have a better understanding of the time that it would take to drain that battery.
                        View my worklog here

                        Comment


                        • #13
                          Originally posted by eugenweij View Post
                          yeah it would take quite some time to drain the battery, 20000 mAh is a discharge of 20Ah , 20 amps per hour , so when the odroid board is on and taking the full 2A current draw it would take 10 hours to drain the battery.

                          at least thats the calculations I found with google.

                          and my screen is powered separately and turns off when the ignition is turned off.

                          One step in the testing will be measuring how much milliamps the odroid needs when in sleep, then I will have a better understanding of the time that it would take to drain that battery.

                          Hmm I don't know if 10 hours sounds right, but maybe it is lol. The O-Droid doesn't use 12v either, it uses 5v or something. So it's not 2amps at 12v which might be what gave you that calculation. But I'm not sure either. I guess having the battery for backup isn't a bad idea. Realistically you could probably get the current draw down to under an amp when in idle.

                          Comment


                          • #14
                            Sorry for interrupting (because I have no info about the odroid boards), but I'll give you a reference:
                            My set-up (a DN2800MT mobo + 6.4 LCD) draws at full power 35 wats, which means 3A. The LCD alone draws 0.7-0.9A. So only the mobo at full power takes 2.2A.
                            What I'm trying to say - it couldn't be real that tiny thing to draw 2A. Yes, it powered by 5V 2A adapter, but that means that it draws at max 80% of that 2A - 1.6A. (When calculating the power source for a device the engineers allays add at lest 20% extra).

                            p.s. I found this video:

                            Keep in mind that the device shown in the video is measuring Wattage. Meaning even while booting up the odroid is consuming way less than 1A. Maybe it's time OldSpark to have a look to this threat ...
                            Soooo you probably will be fine even with the car parked for 3-4 days, BUT if you want be 100% you'll start the car in the noxt morning, you could try one, or both routes:
                            1. Dual battery setup. Like mine for example, but mine will be tuned soon, so wait to the end of the mouth to see the update. Hint: an arduino will control the PC; the monitor; the second battery; the power to all devices added by me; the reverse camera by the state of the alarm, the car voltage and the reverse gear I'm writing the sketch for the arduino right now.
                            2. Paul's volvo S60 - he did many things in his car, one of them was allays connected to the internet RasPi. He was measuring the battery voltage and in case it drops under **.*V car starts by it's own so that the battery would charge. I red his threat more than a year ago, so you may read it now, to see in detail, as my memory may be making jokes with me, you know
                            3. A combination of both. Dual battery + auto car start
                            My worklog: VOLVO S80 CarPC

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                            • #15
                              Well its 2 amps at 5 volts or 10 watts. Even 10 watts is likely high though especially for an idle situation. I'd be surprised if it weren't low single digits on the watts during idle. The Odroid XU would be even better though because in low power applications it changes over to the quad A7 cores which are much more energy efficient than the A9 and A15 cores.

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