Hi all,
the SIMtrace v1.0 is a big success. No re-work required, it worked out
of the box after soldering.
We are in discussion with the manufacturer for some small
footprint/component changes to reduce the number of special components
that he doesn't already have in tape reels in his SMT machines.
After that discussion is finished (hopefully soon), we will build 100
units (in Germany).
Left as a TODO item is still the SIM card adapters. We're working to
make sure they will be ready at the same time the SIMtrace boards will
be ready.
Thanks again to Kevin for his work on the schematics + layout side.
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Hi all,
Kevin and I have been making great progress today, spending about 12
hours with debugging, re-working and re-designign simtrace.
The previous malfanction seemed to be caused by attachign the Vcc from
the phone to the AD7 input of the SAM7. Apparently the Vcc of the phone
was >= 50mV higher than the Vcc of the SAM7, and this caused the phone
(/smartcard reader) to give up as it could not raise the power line to
the level it wanted to raise it, even before switching on clock to the
card.
Aside from the one prototype, we have also received 5 units made by some
friends of K2 in china, who unfortunately used a previous gerber that
had even more bugs. Nonetheless, three out of those 5 units have been
re-worked, and are now functional, too.
We will do a very quick 2nd prototype spin with the following changes
* fix all the bugs as per the trac tickets
* use the new bus switch with lower resistance
* use a LDO with two outputs (and two enable inputs) so we can
use a GPIO to supply the SIM card with voltage ourselves
* add a power distribution switch with < 1Ohm Rds-on so we can
alternatively switch through the Vcc from the phone to the SIM
* add a resistive divider between VCC_phone and the ADC input
* use angled jumpers so the overall unit remains flat
The gerber will be sent off tomorrow for a '3 working days' quick PCB,
the corresponding digikey order, too.
Kevin has offered to solder the next prototype. If everything works
well, we will immediately go into production of something like 100
units to make sure they're ready before the CCC Camp (where some people
might be interested in obtaining one).
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Hi all,
unfortunately the number of hardware bugs is quite numerous. for those
interested in the details, feel free to read the ticket list in trac.
None of the bugs that I've found so far is too serious for a manual
re-work of the prototype. My device is now already enumerating its
SAM-BA loader on the USB. JTAG is working, too: I can set the red/green
LED via JTAG.
I'll do some further testing (SPI, SIM card interface) as soon as I find
time...
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Hi all!
Today the PCBs have arrived and I spent some tiem building the first
prototype. Soldering after a long time was quite fun but worked great.
However, I got stuck for way too long due to two pin-out problems:
* the voltage regulator pinout is completely mixed up
* the reset switch pinout is wrong and causes the device to be in nRESET
all the time
I've now applied some re-work and the CPU seems running. However, due to
some unknown (probably USB pull-up related) problem, I cannot see it
enumerate on USB yet.
Will keep you posted about my further progress.
I've created tickets for the bugs in our trac
(http://bb.osmocom.org/trac/query)
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
See the attached image...
--
- Harald Welte <hwelte(a)sysmocom.de> http://www.sysmocom.de/
=======================================================================
* sysmocom - systems for mobile communications GmbH
* Schivelbeiner Str. 5
* 10439 Berlin, Germany
* Sitz / Registered office: Berlin, HRB 134158 B
* Geschaeftsfuehrer / Managing Directors: Holger Freyther, Harald Welte
Hi all,
JFYI: The components for the SIMTRACE prototypes have arrived. The PCB
will be shipping on June 9, so I guess it will arrive after the
whitsunday holidays and we should be able to build the first unit[s] on
June 14 or 15.
Kevin: Do you have some time around those dates?
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
Hi!
It really seems like the FPCB (Flexible PCB) SIM card adapters have been
removed from the rebelsimcard.com store. A couple of months ago, you
could buy them separately from their "Hex Scanner".
I have sent them an inquiry indicating my interest in buying bulk
quantities (100 pieces). Let's see if that works. IF not, we may have
to develop a 'plan B' in this area :(
Regards,
Harald
--
- Harald Welte <laforge(a)gnumonks.org> http://laforge.gnumonks.org/
============================================================================
"Privacy in residential applications is a desirable marketing option."
(ETSI EN 300 175-7 Ch. A6)
