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Parallella Community Supercomputing for Everyone 2014-02-10T23:05:02+00:00 https://parallella.org/forums/feed.php?f=23&t=405 2014-02-10T23:05:02+00:00 2014-02-10T23:05:02+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=6024#p6024 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by fakir — Mon Feb 10, 2014 11:05 pm

]]> 2013-07-15T07:46:22+00:00 2013-07-15T07:46:22+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2583#p2583 <![CDATA[Re: Schematic/Spec Review]]>
Thanks.

btw, I just had a look at the variable vdd_gpio thanks for pointing it out. I had missed the fact the hdmi chips input could take anything from 1.8 to 3.3v. The default voltagee output of that regulator seems a bit high when compared to the nominal specs of the chips it powers. For the component onboard, I guess you took that in consideration and deemed it OK, but a note about it for daugter card designer would be useful, especially the vdd_adj that starts at 3v3 rather than the 1.8v marked on the schematic. And 2.9v rather then 2.5v for the vdd_gpio.

Cheers,

Sylvain

Statistics: Posted by tnt — Mon Jul 15, 2013 7:46 am

]]> 2013-07-15T00:07:43+00:00 2013-07-15T00:07:43+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2577#p2577 <![CDATA[Re: Schematic/Spec Review]]> http://hipstercircuits.com/finally-a-wo ... tible-lcd/

Statistics: Posted by 8l — Mon Jul 15, 2013 12:07 am

]]> 2013-07-14T23:49:16+00:00 2013-07-14T23:49:16+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2576#p2576 <![CDATA[Re: Schematic/Spec Review]]> Thanks for the inputs regarding the pin swap and turbo_mode. We will consider it and make a decision tomorrow.
Andreas

Statistics: Posted by aolofsson — Sun Jul 14, 2013 11:49 pm

]]> 2013-07-14T19:12:44+00:00 2013-07-14T19:12:44+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2574#p2574 <![CDATA[Re: Schematic/Spec Review]]>
* I'd like to make this work on battery and so far the best option I can see would be to plug on the 3 pin header J14 so that I get the 2 possible 5V input and I take care of feeding the voltage from the battery (converted to 5v, although that might actually work without). But I'd still like to be able to force the 'turbo mode' pin from like a battery monitor, but currently it's not possible because it's forced low when the 5v input is _not_ present. I think it would be better to revese that logic so that multiple open-collector driver can drive it low to enable turbo mode.

* And as I stated earlier on the topic of PEC_POWER, I'm not conviced that having every rail there is useful (unless we can feed them through there but feeding > 1.5 A through 2 pins only seems a bit risky). To me pretty much the voltages that are used for IO on the pins are useful (so 2v5 and 3v3 and the raw 5v in of course).

Statistics: Posted by tnt — Sun Jul 14, 2013 7:12 pm

]]> 2013-07-14T18:38:58+00:00 2013-07-14T18:38:58+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2572#p2572 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by tnt — Sun Jul 14, 2013 6:38 pm

]]> 2013-07-14T16:15:41+00:00 2013-07-14T16:15:41+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2571#p2571 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by aolofsson — Sun Jul 14, 2013 4:15 pm

]]> 2013-07-14T16:11:11+00:00 2013-07-14T16:11:11+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2570#p2570 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by aolofsson — Sun Jul 14, 2013 4:11 pm

]]> 2013-07-14T14:56:16+00:00 2013-07-14T14:56:16+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2568#p2568 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by Gravis — Sun Jul 14, 2013 2:56 pm

]]> 2013-07-14T12:46:46+00:00 2013-07-14T12:46:46+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2566#p2566 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by 9600 — Sun Jul 14, 2013 12:46 pm

]]> 2013-07-13T14:45:57+00:00 2013-07-13T14:45:57+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2556#p2556 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by tnt — Sat Jul 13, 2013 2:45 pm

]]> 2013-07-13T14:44:59+00:00 2013-07-13T14:44:59+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2555#p2555 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by tnt — Sat Jul 13, 2013 2:44 pm

]]> 2013-07-13T14:12:00+00:00 2013-07-13T14:12:00+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2554#p2554 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by Sundance — Sat Jul 13, 2013 2:12 pm

]]> 2013-07-12T12:45:17+00:00 2013-07-12T12:45:17+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2543#p2543 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by aolofsson — Fri Jul 12, 2013 12:45 pm

]]> 2013-07-12T07:53:15+00:00 2013-07-12T07:53:15+00:00 https://parallella.org/forums/viewtopic.php?t=405&p=2541#p2541 <![CDATA[Re: Schematic/Spec Review]]> Statistics: Posted by teo80 — Fri Jul 12, 2013 7:53 am

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