Hi David,
I personaly like to stay away from the "let's build some special box
ourself" idea.
We have seen in some other projects what happens when hams start making
their own board: which they then have to get into manufactor, buy cases
to add to them, set up websites, handle shipping, etc.
That's not something hams are very good at. Manufactoring companies can
do that much better and -if the design is open hardware- even add their
own changes to make manufactoring better.
There are now a couple of boards out there that provide quite some
processing-power, are hardware extendable and are open source hardware
and open source software.
I think of -say- the beaglebone (http://beagleboard.org/bone) or the
chipkit (http://www.chipkit.cc/ <http://www.chipkit.org/forum/>).
The beaglebone is based on an ARM. The chipkit on a PIC32/MIPS.
Perhaps there are even other boards out there. Why not a Raspi with an
extension board?
The big advantage of these boards is that they already exist and are
already available in sufficiant large quantities.
I think it probably makes more sence to only make a "shield" (or
whatever they are called for these devices) to handle interfacing to the
radio or microphone; but limit ourselfs to that.
If the shield is licened with a open source hardware licence that do
allow commercial companies to make them; you have best of both world:
on one side, individual hams who want to make it themselfs can do so. On
the other hand, manufactoring companies who are interested in selling
big quantities can also do so and -even- change the design to better
suit their production enviroment.
We hams should focus on what we do best: develop and experiment.
Also, find somebody to make an open source 3D design of a case to be put
on thingiverse (http://www.thingiverse.com/)
Centralised manufactoring by some company who then has to ship it out
via parcel-services that blow million tons of CO2 into the air every
year is so 20th century! :-)
Just grap an open source 3D design from the net and ask anybody who has
a 3D printer to make one for you. (almost any hackerspace has these
things thesedays!!!)
So, instead of looking for "what processor to use". I would prefer to
look for "what ready to use and already available board can be used for
this?"
73
Kristoff - ON1ARF
On 21-05-12 14:17, David Rowe wrote:
Hi James,
The need for just such a box has been discussed at the Hamvention, and
we also dreamed up the microphone form factor. It would need a patch
cable or jumper system to interface with the various mic/spkr and PTT
standards.
Inside we would need some sort of 32 bit processor, but perhaps not a
full Linux machine.
It would make (open source) Digital Voice available on any legacy HF SSB
or VHF FM radio without a PC, and be completely open and hackable.
Major work between where are today and that is a fixed point port of
Codec 2. I've got some thoughts on how I can delegate that work more
effectively, e.g. automated unit tests that will show pass/fail on any
modified code.
Cheers,
David
On Mon, 2012-05-21 at 08:07 -0400, James Hall wrote:
You know, if we use stuff meant for cellphones like
very miniaturized ARM processors then it should be possible to make a
codec2 mic for HT/mobile radios. Such a mic for an HT would need it's
own battery but for many mobile radios could run off of provided
power. I'm also, slowly, trying to figure out the Remote Control
protocol for older Kenwood TM-xx1 radios so something could be
produced that could be more tightly integrated into those radios.
Kinda like the newer Kenwood D710 APRS head that can be used to
upgrade one of their newer radios (What is it, DM71a?)
James
N9XLC
On Sun, May 20, 2012 at 11:52 PM, Bruce Perens <[email protected]>
wrote:
On 05/20/2012 08:04 PM, Matthew Pitts wrote:
> Bruce,
>
> Being able to use an existing transceiver to use a new mode
is something a lot of hams are willing to do; in fact, I've
seen numerous comments on various lists that indicate it's a
lot more common than we think.
Well, sure. But putting an SSB operator on PSK, WSPR, or
Codec2 brings
previously-unavailable functionality to the radio. If you want
to do
that with VHF/UHF hams, give them a way to convert their FM
HTs to
Codec2 (like our HF modem, over an FM audio channel). That is
adding
real functionality, even if it's not running our system as
well as we
potentially can.
Thanks
Bruce
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security
and
threat landscape has changed and how IT managers can respond.
Discussions
will include endpoint security, mobile security and the latest
in malware
threats.
http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Freetel-codec2 mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/freetel-codec2
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________ Freetel-codec2 mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/freetel-codec2
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Freetel-codec2 mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/freetel-codec2
------------------------------------------------------------------------------
Live Security Virtual Conference
Exclusive live event will cover all the ways today's security and
threat landscape has changed and how IT managers can respond. Discussions
will include endpoint security, mobile security and the latest in malware
threats. http://www.accelacomm.com/jaw/sfrnl04242012/114/50122263/
_______________________________________________
Freetel-codec2 mailing list
[email protected]
https://lists.sourceforge.net/lists/listinfo/freetel-codec2
