hol...@hotmail.com said:
> The university that I hang out at has a clock tower with a full set of
> bells. ...
Stanford has a clock tower.
Searching YouTube for >Stanford Clock Tower< will find several short videos.
It's in a roughly 10 ft square room with big windows on all 4 sides. I stop
Or if you want a bit more of a challenge, you might consider the DS3231
https://datasheets.maximintegrated.com/en/ds/DS3231.pdf
This is a full-featured real time clock with a TCXO. It has a programmable
32KHz or 1 pps output. You can trim the frequency digitally via an I2C port
in increments of ab
al Message-
From: D. Resor
To: 'Tom Van Baak' ; 'Discussion of precise time and
frequency measurement'
Sent: Mon, Mar 5, 2018 10:02 am
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
The unit has an external switching power supply which provides 5+ VDC.
I've been known to use the egg timer mode in the kitchen... I get distracted
easily and burned food has been known to occur. Due to system vagaries, it is
probably only accurate to say 30 milliseconds (better on Linux, of course), so
less than perfect eggs are possible. I've thought about lett
To the yoctosecond. Very fine sand in the li'l hourglass.
On Monday, March 5, 2018, jimlux wrote:
> On 3/5/18 10:26 AM, Mark Sims wrote:
>
> Besides those clocks Heather has alarm clock and egg timer alarms.
>>
>
>
> because doesn't everyone time their soft boiled eggs to the microsecond?
> (h
On 3/5/18 10:26 AM, Mark Sims wrote:
Besides those clocks Heather has alarm clock and egg timer alarms.
because doesn't everyone time their soft boiled eggs to the microsecond?
(hmm, my Z3801 GPSDO is probably good to 1E-11 at tau of 300 seconds,
so that's a potential error of 3ns )
The university that I hang out at has a clock tower with a full set of bells.
Several years ago the tower and bells were restored, at hefty expense. But,
alas, some no-goodnik neighbors objected to the sound, so they cut back the use
of the clock. I don't know what system they use to get th
8 10:02 am
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
I have been soldering since I was in high-school (circa 1970s) and before that.
I have two additional Maas-Rowe Controllers here at home I can work with.
However I do not want destroy them to the point of no return as fi
nday, March 04, 2018 3:02 PM
> To: Discussion of precise time and frequency measurement
> Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
>
> Donald,
>
> Possible solutions to your 60 Hz mains problem:
>
> 1) If you don't want to open or hack t
e-nuts On Behalf Of Tom Van Baak
Sent: Sunday, March 04, 2018 3:02 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
Donald,
Possible solutions to your 60 Hz mains problem:
1) If you don't want to open or hack th
iginal Message-
From: time-nuts On Behalf Of paul swed
Sent: Sunday, March 04, 2018 2:21 PM
To: Discussion of precise time and frequency measurement
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
Donald
I don't know if anyone makes such a thing. But I can easily think of numb
Behalf Of Thomas Miller
Sent: Sunday, March 04, 2018 2:50 PM
To: time-nuts@febo.com
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
Can you supply any schematics, good images of the electronics? We may be able
to suss out how they do the internal reference.
I am thinking that
Of Adrian Godwin
Sent: Sunday, March 04, 2018 3:25 PM
To: Tom Van Baak ; Discussion of precise time and
frequency measurement
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
Donald,
I'm interested to hear more about the Maas-Rowe controller. I presume something
that plays a
d60.asm
>
> /tvb
>
> - Original Message -
> From: "Adrian Godwin"
> To: "Discussion of precise time and frequency measurement" <
> time-nuts@febo.com>
> Sent: Sunday, March 04, 2018 2:57 PM
> Subject: Re: [time-nuts] WWV or Net Cl
/pic/src/pd60.asm
/tvb
- Original Message -
From: "Adrian Godwin"
To: "Discussion of precise time and frequency measurement"
Sent: Sunday, March 04, 2018 2:57 PM
Subject: Re: [time-nuts] WWV or Net Clock controlled oscillator
> There is indeed a 60Hz out picdiv fro
lem from knowing what the current local date / time is.
/tvb
- Original Message -
From: "D. Resor"
To: "Time Nuts List"
Sent: Sunday, March 04, 2018 2:30 AM
Subject: [time-nuts] WWV or Net Clock controlled oscillator
> Hello,
>
>
>
> My first po
There is indeed a 60Hz out picdiv from Tom Van Baak -
http://www.leapsecond.com/pic/picdiv.htm. It's not in that list but ask Tom.
I've just used one (modified for 50Hz out) to drive a 1A H-bridge circuit
that supplies a 12V peak-peak square wave to an old LED clock, replacing
the original wall-wa
:45 pm
Subject: [time-nuts] WWV or Net Clock controlled oscillator
Hello,
My first post here. I found this group's user group page while researching a
source for either a WWV, GPS or Network referenced oscillator.
The devices/equipment which I was able to find didn't seem
Donald
I don't know if anyone makes such a thing. But I can easily think of
numbers of answers.
It depends on what the Mass Rowe will allow and how comfortable you are
with a soldering iron.
I will guess you need to dig in and supply a better reference. I searched
the web for mass rowe and it seems
Hello,
My first post here. I found this group's user group page while researching a
source for either a WWV, GPS or Network referenced oscillator.
The devices/equipment which I was able to find didn't seem to fit the
requirements.
What I have is a Maas-Rowe DCB1 (Digital Chronobell Ser
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