<div dir="ltr"><div>I've been running with a laptop drive powered off J2 and a m.SATA card on a Flotsam lure with a cheap 3A wall wart with no issues.<br><br></div>Scott<br></div><div class="gmail_extra"><br><div class="gmail_quote">On Thu, May 21, 2015 at 11:26 AM, Ken Tait <span dir="ltr"><<a href="mailto:ktait@venturesystemdesign.com" target="_blank">ktait@venturesystemdesign.com</a>></span> wrote:<br><blockquote class="gmail_quote" style="margin:0 0 0 .8ex;border-left:1px #ccc solid;padding-left:1ex">There is one other trick you can try to verify that this is the real problem with your setup.<br>
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place a switch in the + line of the wallwart going to the barrel jack.<br>
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Turn switch off, plug in barrel jack, plug in wall wart. Wait 5 seconds, then turn on the switch. It the board comes up then the supply is right on the edge of being large enough. What you are doing with this test is allowing the wallwart to come up to full voltage and charge it's caps before applying a load to it.<br>
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Another thing I noticed here on all these boards is that the software on boot is not quite right..Someone is making the ASSumption that things turn on instantaneously in hardware so the software has no or minimal delays on boot. This needs to change. For this type of setup there should be a stall delay of at least 800ms on first power application before it checks for a boot device or anything else..<br>
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Hope this helps<div class="HOEnZb"><div class="h5"><br>
Ken<br>
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