Re: [time-nuts] Environmental sensor recommendations

If you use an "interchangeable" NTC like https://br.mouser.com/ProductDetail/US-Sensor/PS103J2 you can skip the calibration part. Edésio On Thu, Apr 05, 2018 at 09:20:56AM -0400, Bob kb8tq wrote: > Hi > > By far the highest resolution sensor you will come across is a thermistor. It > also has a

Re: [time-nuts] inexpensive, black box, GPS or NTP based TTL time capture?

Hi! You could also look at NavSpark (http://navspark.mybigcommerce.com/navspark-arduino-compatible-development-board-with-gps/). It has a serial NMEA output, a PPS digital output AND a trigger pin for timestamp capture. Regards, Edésio On Wed, Oct 25, 2017 at 07:45:49AM +0100, Iain Young

Re: [time-nuts] Machining some aluminum help!

Nice! Do you mind posting some photos? Thanks. Edésio On Fri, Jul 28, 2017 at 12:46:30PM -0700, cdel...@juno.com wrote: > Well I did some research and found my new best friend! > > If you remember I needed: "I have a square aluminum tube 5" X 5" with a > .25" wall it's 8 1/2" long. > > I need

Re: [time-nuts] advice

Hi! Take a look at http://www.leapsecond.com/great2005/ and http://www.leapsecond.com/great2016a/ Edésio On Tue, Feb 21, 2017 at 11:13:34AM -0600, Rhoderick Beery wrote: > Greetings Time-Nuts! > > I'm a physics theorist interested in performing an experiment to measure > the gravitational time

Re: [time-nuts] Anybody want a Thunderbolt power supply?

Have a look at Linear Application Note 101 by Jim Williams: Minimizing Switching Regulator Residue in Linear Regulator Outputs Edésio On Wed, Aug 31, 2016 at 07:01:44PM +, Mark Sims wrote: > You have to be careful choosing a linear

Re: [time-nuts] Speaking clock

Hi! Now you should try with a Dalek voice :-) Edésio On Mon, Aug 08, 2016 at 09:28:26PM +1000, Morris Odell wrote: > Hi all, > > There was a thread about this a few weeks ago and I mentioned that I was > working on one with a "Stephen Hawking" voice - well here's a video: > >

Re: [time-nuts] Syncing Tom's PICDivs to 1PPS

Some models support synchronization to a external (PPS) reference. Take a look at http://leapsecond.com/pic/picdiv.htm Edésio On Thu, Jul 21, 2016 at 10:05:15AM -0400, Scott Stobbe wrote: > I think you will have to decided if you want both your xo (presumably 10 > MHz) and PPS to be phase

Re: [time-nuts] GENIUS by Stephen Hawking (PBS TV), with 5071A cesium clocks

I believe not. 20 nS is about 6 meters error in height. I would need to know the height difference much better than this to have an accurate measurement. Edésio On Fri, May 20, 2016 at 11:24:42AM -0400, Peter Reilley wrote: > I have a question. I, of small brain, am wondering: if the time

Re: [time-nuts] Generating a solid PPS from 10Mhz source

Hi! Try TVB's picDiv at http://www.leapsecond.com/pic/picdiv.htm Edésio On Wed, Jan 13, 2016 at 09:22:09AM +, Jerome Blaha wrote: > Hey Guys, > > Is there an easy circuit to build that can consistently deliver a 1 PPS from > a 10MHz source with excellent resolution and repeatability? My

Re: [time-nuts] xor phase detector (was: FLL errors)

Hi! I suppose he refers to this thread: https://www.febo.com/pipermail/time-nuts/2008-December/035081.html Edésio On Sat, Aug 29, 2015 at 04:32:12PM +0200, Attila Kinali wrote: Moin Magnus, On Sat, 29 Aug 2015 10:47:51 +0200 Magnus Danielson mag...@rubidium.dyndns.org wrote: Warren did

Re: [time-nuts] KS-24361 REF-0 standalone

happily discipline to the pps you feed it. Bob On Aug 6, 2015, at 7:27 PM, Edesio Costa e Silva time-n...@tardis.net.br wrote: Hello Fellows! Had anyone managed to run the KS-24361 REF-0, the one without GPS, as a standalone unit? If so, can you provide some links on how

[time-nuts] KS-24361 REF-0 standalone

Hello Fellows! Had anyone managed to run the KS-24361 REF-0, the one without GPS, as a standalone unit? If so, can you provide some links on how to configure it? The reason to try this is cost. The REF-0 unit costs USD 25 + USD 52.30 (shipping to Brazil) and I have to pay the same amount as

Re: [time-nuts] Small time server for mobile use.

Hi! You can try Laureline GPS NTP Server https://www.tindie.com/products/gxti/laureline-gps-ntp-server/. I have no personal experience with this box but it seems to satisfy all your requirements. Edésio On Tue, May 12, 2015 at 10:11:52AM -0700, Mark Spencer wrote: Hi sorry for a possibly OT

Re: [time-nuts] Modern HW replacement for ATOM based NTP server?

Hi! Take a look at https://www.febo.com/pipermail/time-nuts/2014-December/089217.html and https://www.febo.com/pipermail/time-nuts/2014-December/089681.html. There you can see sub-microsecond accuracy. Edésio On Tue, Apr 07, 2015 at 09:52:57PM +0200, Attila Kinali wrote: On Tue, 7 Apr 2015

Re: [time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

According to http://www.defense.gov/releases/release.aspx?releaseid=1 the L2C and L5 signals are now available. Edésio On Sat, Dec 06, 2014 at 03:18:25PM +0100, Attila Kinali wrote: On Sat, 06 Dec 2014 14:47:54 +0100 Magnus Danielson mag...@rubidium.dyndns.org wrote: Also, GPS L2C and

[time-nuts] FYI: Galileo satellite recovered and transmitting navigation signals

Partial recovery of Galileo constellation: http://www.southgatearc.org/news/2014/december/galileo_satellite_recovered_and_transmitting_navigation_signals.htm Edésio ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to

Re: [time-nuts] LTE Lite SkyTraq chip info

Hi! Navspark has one board with Glonass (http://navspark.mybigcommerce.com/navspark-gl-arduino-compatible-development-board-with-gps-glonass/) and one board with Beidou (http://navspark.mybigcommerce.com/navspark-bd-arduino-compatible-development-board-with-gps-beidou/). Both use a Venus 8

Re: [time-nuts] CentOS 7, Motorola GPS receiver and NTP

Hello! Current version of NTP supports Motorola Oncore and PPS. Take a look at http://support.ntp.org/bin/view/Support/ConfiguringMotorolaOncoreRefclocks Edésio On Wed, Nov 26, 2014 at 11:49:59AM -0500, xaos wrote: Hello everyone. Currently my Stratum 1 NTP server is made up of the

Re: [time-nuts] LTE Lite SkyTraq chip info

Sorry, seems this did not show first time. Edésio On Tue, Nov 25, 2014 at 09:16:20PM -0200, Edesio Costa e Silva wrote: Hi! Navspark has one board with Glonass (http://navspark.mybigcommerce.com/navspark-gl-arduino-compatible-development-board-with-gps-glonass/) and one board with Beidou

Re: [time-nuts] Low noise powersupplies

An application note (http://cds.linear.com/docs/en/application-note/an124f.pdf) from Jim Williams and the related video (https://www.youtube.com/watch?v=Ta1ZuZTHYXA) may be informative. Edésio On Thu, Aug 07, 2014 at 01:41:32PM -0700, Chris Albertson wrote: Just practical question.. How

Re: [time-nuts] Low noise powersupplies

An application note (http://cds.linear.com/docs/en/application-note/an124f.pdf) from Jim Williams and the related video (https://www.youtube.com/watch?v=Ta1ZuZTHYXA) may be informative. Edésio On Thu, Aug 07, 2014 at 01:41:32PM -0700, Chris Albertson wrote: Just practical question.. How

Re: [time-nuts] GPS-III

Try http://navspark.mybigcommerce.com/. A bit more expensive ($25) but comes with a processor embedded. There is also a GPS+Beidou flavor. Edésio (sorry if duplicated) On Thu, Jul 24, 2014 at 05:10:35PM -0500, Al Wolfe wrote: On eBay the RNY25A1 receiver module sells for $15 and $1 for

Re: [time-nuts] GPS-III

Hi! Try http://navspark.mybigcommerce.com/. A bit more expensive ($25) but comes with a processor embedded. There is also a GPS+Beidou flavor. Edésio On Thu, Jul 24, 2014 at 05:10:35PM -0500, Al Wolfe wrote: On eBay the RNY25A1 receiver module sells for $15 and $1 for shipping from Taiwan.

Re: [time-nuts] Low cost GPS module for 100ns timestamping error

Welcome! Take a look at NavSpark from SkyTraq (http://www.skytraq.com.tw/). They had an Indiegogo (https://www.indiegogo.com/projects/navspark-arduino-compatible-with-gps-gnss-receiver) campaign recently and should deliver real soon now. The NavSpark chip has an trigger pin for time capture, a

Re: [time-nuts] First success with very simple, very low cost GPSDO, under $8

Hi! If it is all the same for you, I prefer this thread continue in the open as I am interested both in using an Arduino-like for my first GPSDO and STM32 for event capture and timming. Regards, Edésio On Mon, Apr 21, 2014 at 04:29:35PM -0400, paul swed wrote: Good afternoon very interested

Re: [time-nuts] ARM boards for low-cost GPSDOs

Take a look at http://www.pjrc.com/teensy/. Regards, Edésio On Thu, Apr 10, 2014 at 02:38:10PM -0700, Hal Murray wrote: Does anybody have a favorite low-cost ARM board? I'm looking for a simple Arduino like setup rather than something that runs Linux. The idea is to get 32 bit counters so

Re: [time-nuts] maybe OT: GLONASS

Take a look at http://www.insidegnss.com/node/3979 (GLONASS Suffers Temporary Systemwide Outage; Multi-GNSS Receiver Overcomes Problem (updated)) Edésio On Thu, Apr 03, 2014 at 08:56:28PM -0400, Brian, WA1ZMS wrote: I do not have a GLONASS receiver running at home at this time, but the media

[time-nuts] NIST Launches a New U.S. Time Standard: NIST-F2 Atomic Clock

Full story at http://www.nist.gov/pml/div688/nist-f2-atomic-clock-040314.cfm Edésio ___ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.

[time-nuts] Motorola Oncore UT+ firmware update (R5122U1112)

Hello all! I got two Motorola Oncore UT+ from ebay with an ancient firmware, seems 2.2. Is it possible to update them to the latest version (3.2 I believe)? Can anyone provide links to the process? Thanks in advance. Edésio ___ time-nuts mailing list

Re: [time-nuts] Motorola Oncore UT+ firmware update (R5122U1112)

Thank you. 2.2 seems a pre-SA-off firmware. I was hoping for a newer version. I will use this and bid on a Oncore M12. Regards, Edésio On Mon, Mar 31, 2014 at 10:55:20AM -0500, Jason Rabel wrote: 2.2 Is a good working firmware. Unfortunately there is no user-updatable process, you would

Re: [time-nuts] Time stamping with a PICPET

Gabs Ricalde is tracking this path: On Sat, Jun 15, 2013 at 08:13:51AM +0800, Gabs Ricalde wrote: As an alternative to the Net4501, the AM335x in the Beaglebone has timers that accept an external clock up to 25 MHz (TCLKIN) and can timestamp events on an input pin (TIMER4-TIMER7). Both sets of

[time-nuts] First frequency counter

Hi Folks! I am following the time-nuts for sometime but this is the first time I post a message and I hope it is not off-topic. As I live in Brazil, I can not find used equipment in the local market. My (only?) option is to import some. Since money is always a scarce resource and the shipping