Powering ODROID X2 with regulated 5V

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Powering ODROID X2 with regulated 5V

Unread postby bahbka » Mon Jul 22, 2013 7:03 pm

Hello!
Is there way to power up ODROID X2 with 5V over GPIO (also need to power up USB)? Powering via power socket is too ugly for my project.
Thanks.
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Re: Powering ODROID X2 with regulated 5V

Unread postby bahbka » Mon Jul 22, 2013 7:14 pm

Oh, nevermind, just found pin 46 SYS DC Jack +5V and GND, sorry.
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Re: Powering ODROID X2 with regulated 5V

Unread postby Matt » Tue Jul 23, 2013 12:02 am

bahbka wrote:Oh, nevermind, just found pin 46 SYS DC Jack +5V and GND, sorry.


There is a little 5V fuse of some sort after the DC jack, and I believe that this pin is broken out after that fuse, so if you have any power spikes you won't have the protection that fuse offers.** I'm also not sure of the power-handling capability of the traces for that pin. I'd wait for someone from Hardkernel to reply before using that pin to power your ODROID.

** I haven't checked the schematic to know if this is true... It is just a concern I would have. You should find and check the schematic for the X/X2 (either one will do since the only difference between the X and X2 is the CPU module).
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Re: Powering ODROID X2 with regulated 5V

Unread postby mdrjr » Tue Jul 23, 2013 12:16 am

Yes, as Matt said.
Also there isn't the power regulator IC there too.
So if you power goes berserk (above 5.1 or 5.2 I guess) you have a high amount of changes of frying the PMIC and probably trashing the board.
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Re: Powering ODROID X2 with regulated 5V

Unread postby bahbka » Tue Jul 23, 2013 2:52 pm

I have stable 5.0V, tried yesterday with two heavy USB devices (working WiFi dongle and working Asus xtion pro), seems works fine for hour. But, I warned, thank you! The most possible problem in my way is power-handling capability of the traces, I guess. Is it really potential problem? How much mA can stand traces from SYS pin, what do you think?
Thank you!
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Re: Powering ODROID X2 with regulated 5V

Unread postby odroid » Tue Jul 23, 2013 8:20 pm

It is not easy to estimate the maximum current on SYS pin.
When we designed the board, we thought the SYS pin can supply upto 300~400mA to a slave device which is connected to 50pin header.
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Re: Powering ODROID X2 with regulated 5V

Unread postby bahbka » Tue Jul 23, 2013 8:28 pm

Thanks for your answer, I'll power ODROID via power socket then.
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Re: Powering ODROID X2 with regulated 5V

Unread postby bahbka » Sat Jul 27, 2013 2:35 pm

Haha, I'm so blind! :) I can use P5V0 nearby DC Jack to power ODROID. It's connected directly to fuse, like inner pin of DC Jack.
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Re: Powering ODROID X2 with regulated 5V

Unread postby odroid » Sun Jul 28, 2013 12:57 pm

Yes, the P5V0 pin is the best pin for powering X2. ;)
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Re: Powering ODROID X2 with regulated 5V

Unread postby marc9999 » Wed Sep 04, 2013 9:09 am

Hi folks - I'm working on a similar issue with the Odroid U2 board. I looked at the U2 schematics and there appears a P5V0 pin similar to the X2. But, I cannot find that pin on the U2 board. Has anyone used P5V0 on the U2? Has it been removed in newer versions of the U2 board? I just need to find a place to grab +5V from the DC jack and there is no obvious place on the U2 board I have. Any help appreciated.
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Re: Powering ODROID X2 with regulated 5V

Unread postby odroid » Wed Sep 04, 2013 10:34 am

There is no exposed pin of P5V0 on U2.
You can consider to solder a wire on the DC Jack.

This pin in the red circle P5V0.
power_in_U2.PNG
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Re: Powering ODROID X2 with regulated 5V

Unread postby marc9999 » Thu Sep 05, 2013 1:02 am

Thank you so much for the reply... I tried soldering there and it's unstable... I'll try and split the DC plug.
Thank you!
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