[aprssig] [opentracker] OpenTracker USB released
Scott Miller
scott at opentrac.org
Thu Jan 13 14:14:54 EST 2011
You can buy the GT525 separately, but thanks to someone numbering all of
the pins on the vertical entry version of the header backwards, when I
made a last-minute change from the side-entry part it reversed the
pinouts. To hook it up requires pulling wires from the jumper and
re-ordering them.
Scott
N1VG
On 1/11/2011 8:26 AM, Eric Hansen wrote:
> Any idea on when the GT525 module will be available for the OT USB? Or
> is it already?
>
> On Thu, Dec 16, 2010 at 9:50 AM, ray at rayvaughan.com
> <mailto:ray at rayvaughan.com> <ray at rayvaughan.com
> <mailto:ray at rayvaughan.com>> wrote:
>
> It sounds like a very exciting platform! Lots of things are going
> to be possible in this.
>
>
> If 3G and 4G continue to come down in cost, it might even become a
> node-in-a-box. There are already a lot of cheap hotspots with WiFi
> on the market. At a remote site, a phone line with DSL versus a low
> cost 3G account... they're getting closer in price.
>
> Ray
>
> On December 15, 2010 at 11:53 PM Scott Miller <scott at opentrac.org
> <mailto:scott at opentrac.org>> wrote:
>
> > It's on my bench now - just an eval board and a few thousand lines of
> > code so far, but a first attempt at a board layout is in the works.
> > Anything like a functioning beta version is at least 6 months out.
> >
> > 512 KB flash, 576 KB SRAM, minimum 4 MB serial flash, USB host/device
> > support, SD/MMC slot... it's going to be a lot less confining
> system to
> > program for! =] Also, with a 24 MHz 8-bit MCU already nearly
> matching
> > an MX614 for decode performance, I'm really looking forward to seeing
> > what I can do at 76 MIPS with a 32-bit MCU that's got some DSP
> instructions.
> >
> > WiFi isn't in the works immediately. I'm trying to design the board
> > with expansion modules in mind, though. Until then, you'd have
> to use a
> > WiFi bridge.
> >
> > It won't be quite as miserly with power as the T2, of course. I
> think
> > the Ethernet section alone draws something like 500 mA @ 3.3v.
> >
> > POE would be nice, but also might have to wait. Power
> distribution will
> > already be much more complicated than the T2, with more voltages and
> > higher currents, and considerations like having to be able to
> shut down
> > some peripherals when in USB bus-powered mode.
> >
> > Scott
> > N1VG
> >
> > On 12/15/2010 8:25 PM, ray at rayvaughan.com
> <mailto:ray at rayvaughan.com> wrote:
> > > Any hope for an Ethernet version some day? So much more
> flexible. The
> > > radio could be anywhere in the world with a hardwire or WiFi
> connection.
> > > PoE could even power the device, and a low wattage radio.
> > >
> > > Ray, KD4BBM
> > >
> > > On December 15, 2010 at 11:16 PM Scott Miller
> <scott at opentrac.org <mailto:scott at opentrac.org>> wrote:
> > >
> > > > The OT1+ has never had particularly strong RX capability. It was
> > > > something I managed to add on when I upgraded from the old
> KX8 processor.
> > > >
> > > > When I have time, I'm going to see if the OTUSB's demodulator
> can be
> > > > back-ported to the OT1+. It's going to be a bit of a stretch,
> though -
> > > > the OTUSB is clocked 3.25 times faster than the OT1+.
> > > >
> > > > I've been getting results of over 930 packets decoded on the
> WA8LMF test
> > > > track, compared to about 960 for the MX614-based OT2m and
> under 900 for
> > > > most TNC2 clones. The biggest limitation is dynamic range,
> since it's
> > > > using mostly 8-bit math. You have to make sure the audio level is
> > > > adjusted properly, but there's a display in the diagnostic
> screen for
> > > > that. I'm going to add a simple AGC function later on - that
> helped
> > > > with the DTMF decoding on the ADS-SR1. Incidentally, that
> runs on a
> > > > slightly slower version of the same processor, so at some
> point I'll
> > > > probably port the DTMF code over and use it for some non-APRS
> stuff with
> > > > the OTUSB hardware.
> > > >
> > > > The new MCU also has more RAM available, and part of that's
> going to go
> > > > to KISS buffering.
> > > >
> > > > I'm really looking forward to doing a few more specialized
> board layouts
> > > > based on the OTUSB. Aside from the voltage regulator there's
> just one
> > > > 44-pin IC that does everything, USB interface included. Some
> of the
> > > > software work was a major pain - getting it to load firmware
> over the
> > > > USB port when a good chunk of that firmware is the USB stack
> itself, for
> > > > example - but it does make the hardware side easier.
> > > >
> > > > Scott
> > > > N1VG
> > > >
> > > > On 12/15/2010 4:01 PM, Xinhua Rong wrote:
> > > > > Scott,
> > > > >
> > > > > Congratulations on the new product release. Personally, I
> like MX614
> > > > > more. I had poor decoding experience in OpenTracker+ with
> FT-7800R,
> > > > > FT-8800R etc mobile radios with DATA port. Not sure if you had
> > > chance to
> > > > > test OTUSB with these radios.
> > > > >
> > > > > Thanks,
> > > > > Adam
> > > > >
> > > > > On 2010-12-16 6:01, Scott Miller wrote:
> > > > >>
> > > > >> I'm pleased to announce that the new OpenTracker USB is
> now shipping!
> > > > >>
> > > > >>
> https://www.argentdata.com/catalog/product_info.php?products_id=148
> > > > >> http://wiki.argentdata.com/index.php/OpenTracker_USB
> > > > >>
> > > > >> The new tracker is basically a Tracker2 without the
> digipeater and
> > > > >> Garmin protocol functions, but with a full-speed USB port
> that can be
> > > > >> used for configuration, command prompt access, and KISS mode,
> > > > >> independent of the two regular serial ports.
> > > > >>
> > > > >> This means you get remote control capability, a TNC2-style
> command
> > > > >> prompt, scripting, weather station support, KISS mode, and
> the ability
> > > > >> to do all of this simultaneously without reloading the
> firmware.
> > > > >>
> > > > >> There's also space inside for a GT-525 GPS receiver
> module, and
> > > we'll be
> > > > >> offering that with the appropriate jumper a little later
> as an option.
> > > > >>
> > > > >> Demodulation is software-based, and significantly improved
> over the
> > > > >> OpenTracker+ - in our testing, it's been very close to
> MX614-based
> > > TNCs
> > > > >> in decode performance.
> > > > >>
> > > > >> Because of the surface mount construction we won't be offering
> > > this one
> > > > >> as a kit. We'll still be offering the OpenTracker+ as a
> kit as long as
> > > > >> we're able to get the parts, but the assembled version
> will be phased
> > > > >> out in favor of the new design.
> > > > >>
> > > > >> USB support has been tested with Windows 2000/XP, Mac OS
> X, and Linux.
> > > > >> We'll be adding INF files for Vista and Windows 7 shortly,
> but it
> > > shows
> > > > >> up as a generic USB CDC device so drivers are included
> with the
> > > > >> operating system.
> > > > >>
> > > > >> Documentation is still sparse, but the wiki has the critical
> > > > >> information. Nearly all of the information in the Tracker2
> manual
> > > > >> applies, with the exception of the digipeater and Garmin
> sections. The
> > > > >> OTUSB manual should be published by this weekend.
> > > > >>
> > > > >> We've got units ready to ship now, and more on the way, so
> there's
> > > still
> > > > >> time to put it on your Christmas list!
> > > > >>
> > > > >> 73,
> > > > >>
> > > > >> Scott
> > > > >> N1VG
> > > > >>
> > > > >>
> > > > >
> > > >
> > > >
> > > >
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