[Tinkerphones] [Gta04-owner] Status GTA04A5 - unplanned Xmas present!

H. Nikolaus Schaller hns at goldelico.com
Wed Feb 22 16:13:45 CET 2017


Hi Frank,

> Am 22.12.2016 um 21:22 schrieb Frank Gau <fgau at gau-net.de>:
> 
> as an old gta02 user I only say wow!
> 
> very good work. merry christmas! (a silent ml reader)

looks as if your message got stuck in the server queue.
Anyways thanks for the wishes.

Unfortunately, the real production did not run as we all
hoped for (see my other mail).

BR,
Nikolaus

> 
> 
> On Thu, Dec 22, 2016 at 07:01:32PM +0100, H. Nikolaus Schaller wrote:
>> Hi,
>> today I received a phone call from the production company
>> that they will close tomorrow up to first week of January.
>> 
>> But they had a little spare time to run another attempt
>> to build our GTA04A5 boards using the redesigned stencil.
>> 
>> So they had already populated one panel (4 PCBs) and I
>> could come to have a look at the X-Ray.
>> 
>> Now, being back from the visit, here are the first good news:
>> the X-Ray of the PoP chip looks perfect!
>> 
>> Then we ran an AOI (Atomatic optical inspection) which
>> revealed one missing component, one rotated and one
>> additional. That happens from time to time.
>> 
>> There was another mistake - two SOT23-5 chips were swapped.
>> 
>> After fixing all this I did the standard measurements with
>> the Smart Tweezers and for the first time, there were no
>> short circuits to find!
>> 
>> I had taken the SD card from previous experiments and a
>> GTA04 battery with me, but unfortunately none of the LEDs
>> did light up :(
>> 
>> So I took the panel home with mixed feelings and connected
>> the RS232 cable to the first board.
>> 
>> And voila, the DM3730 starts, but breaks into U-Boot console
>> so that the LEDs are not controlled by our boot.scr! The
>> problem seems to be the IrDA receiver which is not turned
>> off by MLO. But that can be fixed in software.
>> 
>> Then I simply typed "run bootcmd" and Linux got up and
>> running!
>> 
>> I could play around a little to find out that the 3G modem
>> can be turned on and reports IMEI and status. And the WiFi
>> chip is also found.
>> 
>> All this are things I wasn't able to test so far.
>> 
>> Then I connected a display and made a short video:
>> 
>> 	https://youtu.be/JrLN8zHmuxQ
>> 
>> Phew - it seems to work!
>> 
>> Now I am looking forward to the real production run in
>> January. Then we finally will be able to ship the GTA04A5
>> boards and complete L2804 devices.
>> 
>> Thanks for your patience, have nice holidays and a happy
>> new year,
>> 
>> Nikolaus
>> 
>> _______________________________________________
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>> Gta04-owner at goldelico.com
>> http://lists.goldelico.com/mailman/listinfo.cgi/gta04-owner
> 
> -- 
> sent with 100% wireless electrons
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