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Thread: Odroid, power and questions.

  1. #11
    Mo' Programming Mo' Problems
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    Sonicxtacy02's Avatar
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    I cant see any of your ebay links they just take me straight to eBays homepage.

    I hooked up the m3 last night and it worked fine with the ODROID and monitor, but after pondering how to effectively manage two power lines from one supply in different ways, its probably not worth it to me to switch from my current setup. You can certainly go with your timer approach though. You're wiring scenario sounds like it would work just fine.

    I've had no issues with USB devices having trouble shutting on/off with the vehicle cycle. Wifi, GPS, BT, and external hard drives just pick up where they were in their previous state. Of course, if you're playing media from a external hard drive or thumb drive you'll need a way to stop the media before disconnection (I am still doing this manually). The only time USB gremlins persist for me is if i set the CPU to run at a low mhz (~300) for a long time (several days).

    BTW which ODROID do you have? All my experience is based on the X2
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  2. #12
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    Here's my:
    Setup: http://www.shad0w.org/isdroid/OdroidU3.html
    Thread: http://www.mp3car.com/show-off-your-...odroid-u3.html
    and the 12VDC to 5VDC that I used with my ODROID U3: http://www.aliexpress.com/item/DC-Bu...490202528.html

    Hope it helps. Obviously I don't use any smart graceful poweroff (yet)

  3. #13
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    Changed the links, should work now. They're just ebay 12v psu's, all claiming decent power.

    http://www.ebay.co.uk/itm/141049329872

    Bought this one, its cheap, waterproof and says the word protection 4 times.

    Will leave the storage in all the time then, cheers for the heads up. I've got a U3.

    My power route should be

    Battery - Fuse - Relay - isolator - minidsp - amp
    Battery - Fuse - M3 ATX + Switch between green and black pins?
    m3 atx 12v - relay - 5a conversion - (isolator?) - usb hubs + screens.
    m3 atx 5v - odroid, storage.

    Only thing left really is the spare battery, how do I connect this up to the main battery so that it doesn't try and steal power from it when the spare gets low? Thinking just a bike battery, whatever will fit in my hole. Could this run an amp with a 30amp fuse?

    Kevin, had a quick look through your threads, looks a good project, baffled as to how your gps works! Is your music coming through FM radio?
    Last edited by chug1; 07-16-2014 at 04:39 AM.

  4. #14
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    To hook up a secondary battery you need an isolator. I use this stinger model. It isolates your secondary battery from your primary battery by reading the ignition line, meaning the secondary will only charge when the alternator is outputting current.

    A 30A fuse is plenty for an amp
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  5. #15
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    Thanks for that, will try and some something similar in the UK. The fuse rating was just in relevance to how much power it could consume. When speccing a battery, I'm going to need something with a rating larger than the 30amps on the amp + odroid and ancilarries?

  6. #16
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    Does anyone know what kind of switch I will need on the green/black pins? Ie momentary or on/off? Just ordering all the parts now.

  7. #17
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    Quote Originally Posted by chug1 View Post
    Does anyone know what kind of switch I will need on the green/black pins? Ie momentary or on/off? Just ordering all the parts now.
    I'm assuming you're referring to the ATX connector pins? You connect them. Black is GND and when Green goes LOW it simulates the PC being in the ON state. Leave them connected and allow the remote wire state of your power supply handle the ON/OFF of the ODROID
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  8. #18
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    Ok, so I need an on/off switch for a manual override? Ie they stay connected and the psu is on, disconnect psu goes off. I will leave it connected just wanted a manual switch.

  9. #19
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    My manual switch kills the 5v out from the psu to the odroid, but any upstream power connection would be fine

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  10. #20
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    Quote Originally Posted by Sonicxtacy02 View Post
    I'm assuming you're referring to the ATX connector pins? You connect them. Black is GND and when Green goes LOW it simulates the PC being in the ON state. Leave them connected and allow the remote wire state of your power supply handle the ON/OFF of the ODROID
    Sorry Sonic, I dont know what you mean by 'You connect them'. Do you mean to each other so that Green is grounded? And then control the ON/OFF state of PSU via ignition state and inturn control on/off state of the odroid with the Blue remote wire (via a relay to the 5v rail)?

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