[time-nuts] counter

Eric Garner garnere at gmail.com
Mon Jan 31 03:29:10 UTC 2011


My recollection is that the other list was formed to keep the S/N ratio of this list up.

-Eric

Sent from my Banana jr (tm) Mobile Device

On Jan 30, 2011, at 7:10 PM, Tijd Dingen <tijddingen at yahoo.com> wrote:

> "The discussion seems to want to take place here however. :)"
> 
> I would say go with the flow. If the discussion is happening here and "not 
> there",
> keep it here for now. When the project has gained momentum you can always decide
> to go off-list again.
> 
> 
> The analog I/O ranges from "too easy" to "tricky", depending on your chosen
> counter architecture and maximum frequency.
> 
> regards,
> Fred
> 
> 
> ----- Original Message ----
> From: Bob Bownes <bownes at gmail.com>
> To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
> Sent: Mon, January 31, 2011 2:26:22 AM
> Subject: Re: [time-nuts] counter
> 
> Yes, it's still active. I've created a mailing list and google group
> just for the counter project. opencounter at googlegroups.com to keep the
> counter project from going out to all 800 time-nuts.
> 
> The discussion seems to want to take place here however. :) I've been
> trying _not_ to be the lead of the opencounter group, but rather to
> enable it. So far it doesn't seem to be working. I guess I'll spin up
> another round of benevolent dictator effort and say 'Yo! Over here!'
> 
> (I got a 5370B shortly after starting the opencounter group, so my
> immediate need got taken care of, but that doesn't mean we still
> shouldn't build an open counter. )
> 
> An FPGA based solution sounds quite flexible and attractive. I have a
> Diligent NEXSYS sitting on the bench next to the 5370b as a matter of
> fact. I'm sure we could get all the speed needed out of an FPGA, but
> the analog i/o might get to be the tough part. I don't know enough
> however.
> 
> I think your email got eaten by the spam filter. I'll respond to that shortly.
> 
> Bob
> 
> 
> On Sun, Jan 30, 2011 at 8:11 PM, Tijd Dingen <tijddingen at yahoo.com> wrote:
>> On that note, does anyone know if this counter project is still active? Some
>> time ago I asked about this, but never got a reply. Maybe the e-mail got
>> eaten by a spam filter, or maybe I just didn't ask nice enough, I don't
>> know. ;->
>> 
>> If there is still an active project, I'd be interested. If not, I'll just
>> keep doing my own fpga based counter thing.
>> 
>> regards,
>> Fred
>> 
>> 
>> 
>> 
>> ----- Original Message ----
>> From: Don Latham <djl at montana.com>
>> To: Discussion of precise time and frequency measurement <time-nuts at febo.com>
>> Sent: Mon, January 31, 2011 1:51:45 AM
>> Subject: Re: [time-nuts] counter
>> 
>> They look interesting, Tristan. Gee, nobody's "in charge" of this, I'm not
>> sure it's even a project at this point, and AFIK there's no out of turn
>> :-). I too like the Arduino, in fact I've settled on them or the Propeller
>> for projects if I can, so the boards you propose may work just fine.
>> Don
>> 
>> Tristan Steele
>>> Hi Don,
>>> 
>>> At the risk of speaking out of turn, and not knowing too much about this
>>> project (I'm new here!) have you considered something like these boards:
>>> 
>>> http://www.gadgetfactory.net/index.php?main_page=index&cPath=1&zenid=d282dce6c5b0acfe45c1377315b2734c
>>> 
>>> c
>>> 
>>> They use the Spartan 3E chips, like alot of low cost FPGA boards and also
>>> they expose the JTAG headers.  I'm unsure of the license of the current
>>> programming software but it is likely to be pretty hack-friendly as the
>>> board designs themselves are released under creative commons.
>>> 
>>> They are designed for use with the Arduino project and a soft core, though
>>> this is certainly not required.  I've been looking at them as a nice, low
>>> cost FPGA board that is pretty configurable.
>>> 
>>> I have no affiliation with the site, other then being a prospective
>>> customer.  I also haven't bought any of them yet, so I haven't actually
>>> tested them
>>> 
>>> Just my $0.02,
>>> 
>>> Tristan
>>> 
>>> On 30 January 2011 17:28, Don Latham <djl at montana.com> wrote:
>>> 
>>>> With regard to the home-brew counter project, if it still exists:
>>>> 
>>>> From friend Marcus Leech on another list:
>>>> 
>>>> "Don't know whether you've seen these:
>>>> 
>>>> http://www.knjn.com/ShopBoards_USB2.html
>>>> 
>>>> $79.95 for the low-end board, which includes and FX2, and a small
>>>> Cyclone FPGA.  Pretty good
>>>> value."
>>>> 
>>>> Thanks, Marcus. this looks like the very thing, just need the "front
>>>> end"
>>>> 
>>>> Don
>>>> 
>>>> 
>>>> 
>>>> 
>>>> --
>>>> "Neither the voice of authority nor the weight of reason and argument
>>>> are
>>>> as significant as experiment, for thence comes quiet to the mind."
>>>> R. Bacon
>>>> "If you don't know what it is, don't poke it."
>>>> Ghost in the Shell
>>>> 
>>>> 
>>>> Dr. Don Latham AJ7LL
>>>> Six Mile Systems LLP
>>>> 17850 Six Mile Road
>>>> POB 134
>>>> Huson, MT, 59846
>>>> VOX 406-626-4304
>>>> www.lightningforensics.com
>>>> www.sixmilesystems.com
>>>> 
>>>> 
>>>> _______________________________________________
>>>> time-nuts mailing list -- time-nuts at febo.com
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>>>> and follow the instructions there.
>>>> 
>>> _______________________________________________
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>>> and follow the instructions there.
>>> 
>> 
>> 
>> --
>> "Neither the voice of authority nor the weight of reason and argument are
>> as significant as experiment, for thence comes quiet to the mind."
>> R. Bacon
>> "If you don't know what it is, don't poke it."
>> Ghost in the Shell
>> 
>> 
>> Dr. Don Latham AJ7LL
>> Six Mile Systems LLP
>> 17850 Six Mile Road
>> POB 134
>> Huson, MT, 59846
>> VOX 406-626-4304
>> www.lightningforensics.com
>> www.sixmilesystems.com
>> 
>> 
>> _______________________________________________
>> time-nuts mailing list -- time-nuts at febo.com
>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>> 
>> 
>> 
>> 
>> 
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>> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts
>> and follow the instructions there.
>> 
> 
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> 
> 
> 
> 
> 
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