This is just awesome! I think the community owes you a big, big, thank you!!!<br><br>I'm waiting for the next surprises already ;-)<br><br><div class="gmail_quote">On Wed, Apr 20, 2011 at 11:09 PM, Dr. H. Nikolaus Schaller <span dir="ltr"><<a href="mailto:hns@goldelico.com">hns@goldelico.com</a>></span> wrote:<br>
<blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;">Dear all,<br>
<br>
after all the previous announcements that were certainly not encouraging<br>
and making everybody happy, I have this time really good news. And hope<br>
that there are only good news to report in the future...<br>
<br>
We have finally found a way to patch the power supply issue of our first<br>
engineering sample board and are since this morning able to boot Linux and<br>
demonstrate LXDE on Debian. We will present this unique unit during<br>
LinuxTag on 11-14th May in Berlin. So please come!<br>
<br>
This power supply hack was to solder an additional 1.2V LDO chip<br>
(TPS73601DCQ) to give the CPU more supply power [1]. Apparently this<br>
is sufficient to solve the spurious shutdown issue, which was coming from<br>
a very suboptimal PCB layout of our engineering board.<br>
<br>
Anyway, the new GTA04A3 boards (which are already in production) have a<br>
heavily improved board layout so that I expect that they will never<br>
show this problem and are much more robust. After knowing how much<br>
the layout can and should be improved, I am still surprised that hacking the<br>
hardware with a 2 € LDO chip was a sufficient work-around...<br>
<br>
Here is finally a brand new video showing the device in (battery!) operation: [2]<br>
<br>
So we are looking forward to get the new GTA04A3 boards from SMD<br>
assembly (in approx. 4 weeks), connecting a display, inserting a SD card<br>
and a battery ...<br>
<br>
Happy easter time to everyone,<br>
Nikolaus Schaller<br>
<br>
<br>
[1]: <a href="http://download.goldelico.com/gta04/images/DSC00784.jpeg" target="_blank">http://download.goldelico.com/gta04/images/DSC00784.jpeg</a><br>
[2]: <a href="http://www.youtube.com/watch?v=3KnJc7eImQ4" target="_blank">http://www.youtube.com/watch?v=3KnJc7eImQ4</a><br>
<br>
<br>
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</blockquote></div><br>