Re: [time-nuts] locate 6 digit digital clock
What about using either any clock and feeding it with 50Hz divided down from 10Mhz or using an MM5311 ic clock and feeding it with 50Hz. Thats what I use. regards Max On Wed, Jun 8, 2011 at 2:27 AM, Bruce Lanning belann...@myfairpoint.netwrote: I have been trying to locate a kit or ready built 6 digit digital LED Clock with a 10 Mhz or 1PPS input, without sucess. Can anyone put me on to such a clock. Please contact me at: belann...@myfairpoint.net ___ 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 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.
Re: [time-nuts] locate 6 digit digital clock
Hi Max: By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.com Max Skop wrote: What about using either any clock and feeding it with 50Hz divided down from 10Mhz or using an MM5311 ic clock and feeding it with 50Hz. Thats what I use. regards Max On Wed, Jun 8, 2011 at 2:27 AM, Bruce Lanningbelann...@myfairpoint.netwrote: I have been trying to locate a kit or ready built 6 digit digital LED Clock with a 10 Mhz or 1PPS input, without sucess. Can anyone put me on to such a clock. Please contact me at: belann...@myfairpoint.net ___ 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 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 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.
Re: [time-nuts] locate 6 digit digital clock
If one is going to all that trouble, why not do 8 digits - much more impressive I'd think. One Atmel chip and drivers should be able to do it. Maybe include date and holdover and phase of the moon for good measure. Has anyone studied the Hampton Court Clock? Now there's a clock! Would make a great screen wallpaper. -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ 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.
Re: [time-nuts] locate 6 digit digital clock
Here's a nice one for that purpose: http://tudorhistory.org/potw/021809.jpg On Wed, Jun 8, 2011 at 12:09 PM, Chuck Forsberg WA7KGX N2469R c...@omen.comwrote: If one is going to all that trouble, why not do 8 digits - much more impressive I'd think. One Atmel chip and drivers should be able to do it. Maybe include date and holdover and phase of the moon for good measure. Has anyone studied the Hampton Court Clock? Now there's a clock! Would make a great screen wallpaper. -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ 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 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.
Re: [time-nuts] locate 6 digit digital clock
More on the Hampton Court Clock here: http://www.clockmaker.co.uk/hampton-court-palace/ and here: http://www.cosmicelk.net/hamptoncourtclock.htm On Wed, Jun 8, 2011 at 12:09 PM, Chuck Forsberg WA7KGX N2469R c...@omen.comwrote: If one is going to all that trouble, why not do 8 digits - much more impressive I'd think. One Atmel chip and drivers should be able to do it. Maybe include date and holdover and phase of the moon for good measure. Has anyone studied the Hampton Court Clock? Now there's a clock! Would make a great screen wallpaper. -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ 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 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.
Re: [time-nuts] locate 6 digit digital clock
We have these kinds of clocks all over our lab. Typically they run on IRIG. But if you are only showing seconds the 60Hz wall frequency is more than good enough and they sell 6 digital clocks at Wallmart. An easy clock might be an way-old notebook PC. Even one that uses a 486 processor or an old Apple G3 or G4 macbook. Run NTP on the computer and run a system clock display that fills the screen. This can easily run at the millisecond level or uS level with effort. Computers like this are typically salvage from dumpsters and are mostly free. On Wed, Jun 8, 2011 at 9:09 AM, Chuck Forsberg WA7KGX N2469R c...@omen.com wrote: If one is going to all that trouble, why not do 8 digits - much more impressive I'd think. One Atmel chip and drivers should be able to do it. Maybe include date and holdover and phase of the moon for good measure. Has anyone studied the Hampton Court Clock? Now there's a clock! Would make a great screen wallpaper. -- Chuck Forsberg WA7KGX N2469R c...@omen.com www.omen.com Developer of Industrial ZMODEM(Tm) for Embedded Applications Omen Technology Inc The High Reliability Software 10255 NW Old Cornelius Pass Portland OR 97231 503-614-0430 ___ 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. -- Chris Albertson Redondo Beach, California ___ 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.
Re: [time-nuts] locate 6 digit digital clock
Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarke bro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.com ___ 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.
Re: [time-nuts] locate 6 digit digital clock
Why not just buy or scrounge a small microwave oven or VCR? -John == Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarke bro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.com ___ 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 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.
Re: [time-nuts] locate 6 digit digital clock
In message 985823.67392...@web24819.mail.ird.yahoo.com, Flemming Larsen write s: I recently turned a HP frequency counter into a style-fitting clock for our workshop in Danish Computer History Association: http://ing.dk/artikel/119043-ur-til-tiden (Google translate does a decent job) I used a PIC18mumble and a DS3231 RTC. Since the RTC also tracks day-month-year, it was trivial to let it run in UTC and program the pic18 to figure out timezone + DST. Even if you use a uP to count time, it would make good sense to include a RTC so you don't have to reset the clock after each power-glitch. -- Poul-Henning Kamp | UNIX since Zilog Zeus 3.20 p...@freebsd.org | TCP/IP since RFC 956 FreeBSD committer | BSD since 4.3-tahoe Never attribute to malice what can adequately be explained by incompetence. ___ 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.
Re: [time-nuts] locate 6 digit digital clock
I think he wants a clock that will actually tell time, rather than one that merely blinks *12:00...12:00...12:00...* [?][?] On Wed, Jun 8, 2011 at 3:10 PM, J. Forster j...@quik.com wrote: Why not just buy or scrounge a small microwave oven or VCR? -John == Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarke bro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.com http://www.prc68.com/ ___ 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 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. 360.gif___ 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.
Re: [time-nuts] locate 6 digit digital clock
Hi I suspect that something like: http://www.brgprecision.com/products/synchronized_clocks/poe6mega.php would do the trick. No idea what they cost. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of William H. Fite Sent: Wednesday, June 08, 2011 4:07 PM To: j...@quik.com; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] locate 6 digit digital clock I think he wants a clock that will actually tell time, rather than one that merely blinks *12:00...12:00...12:00...* [?][?] On Wed, Jun 8, 2011 at 3:10 PM, J. Forster j...@quik.com wrote: Why not just buy or scrounge a small microwave oven or VCR? -John == Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarke bro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.com http://www.prc68.com/ ___ 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 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 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.
Re: [time-nuts] locate 6 digit digital clock
Hi Found the GSA price list at: http://www.brgprecision.com/pdffiles/brg_gsa_contract.pdf Looks like you can get the basic no frills model for about $400 and they go up from there. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: Wednesday, June 08, 2011 4:35 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] locate 6 digit digital clock Hi I suspect that something like: http://www.brgprecision.com/products/synchronized_clocks/poe6mega.php would do the trick. No idea what they cost. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of William H. Fite Sent: Wednesday, June 08, 2011 4:07 PM To: j...@quik.com; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] locate 6 digit digital clock I think he wants a clock that will actually tell time, rather than one that merely blinks *12:00...12:00...12:00...* [?][?] On Wed, Jun 8, 2011 at 3:10 PM, J. Forster j...@quik.com wrote: Why not just buy or scrounge a small microwave oven or VCR? -John == Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarke bro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.com http://www.prc68.com/ ___ 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 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 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 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] locate 6 digit digital clock
If you are going to use a laptop... might as well go with the ever handy Lady Heather and a Thunderbolt. You can zoom either the digital clock or analog clock to full screen. Plus it can do sidereal time, etc. You can even select what brand of analog clock/watch that you prefer... even tells the moon phase. ___ 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.
Re: [time-nuts] locate 6 digit digital clock
I picked up this chip to create a nixie clock: http://www.allspectrum.com/store/6-digit-nixie-tube-clock-controller-chip-p- 501.html it has tons of features which you can read about here (condensed feature list): http://www.allspectrum.com/semiconductors/ics/Neonixie/6DIGIT-NIXIE-CLOCK-CH IP/Neonixie-6-digit-nixie-clock-controller-options-v1.0.pdf I picked up an old nixie time code reader display (systron donner) from a surplus place (in seattle): http://www.w2hx.com/x/nixie/IMG_2113.jpg it was great because it had the nixies, controller chips, power supply and everything. I just had to wire in the chip (prototype here): http://www.w2hx.com/x/nixie/IMG_2511.JPG final soldered version here: http://www.w2hx.com/x/nixie/IMG_2721.JPG and the final product here: http://www.w2hx.com/x/nixie/IMG_2516.JPG only problem is, it doesn't (yet) take a 1PPS input. I've contacted the folks who made the chip to see if they would consider creating a version with 1PPS. But it does have a super cap that will let it keep time for something like 8 hours. regards 73 Eugene W2HX - ___ 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.
Re: [time-nuts] locate 6 digit digital clock
I would avoid BRG clocks. I've used them in two different companies now and they're pretty much junk in my opinion. Both of the clocks I used had IRIG inputs and they only sort of work. They seem to randomly lose IRIG lock every few days and will easily get 1/2 second off, even when locked. The user interface is incomprehensible and takes me 20 minutes to figure out every time I have to adjust the UTC offset to display local time. Finally the instruction manuals are too complicated to be useful. It seems like they just keep tacking on features to firmware written 20 years ago, even with the new features don't fit the UI model. When IRIG time wouldn't sync up on one of the units, I took it apart and found the clock to be constructed of a metal picture frame with the circuit boards loosely laying inside some green crafting foam and wires running all over the place. Even my electronics projects when I was a kid looked more professional than these clocks. When I reassembled it, the IRIG feature mysteriously started working again, sort of. The prices look very appealing but trust me, stay away - they just don't work. -Bob On 06/08/2011 03:46 PM, Bob Camp wrote: Hi Found the GSA price list at: http://www.brgprecision.com/pdffiles/brg_gsa_contract.pdf Looks like you can get the basic no frills model for about $400 and they go up from there. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: Wednesday, June 08, 2011 4:35 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] locate 6 digit digital clock Hi I suspect that something like: http://www.brgprecision.com/products/synchronized_clocks/poe6mega.php would do the trick. No idea what they cost. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of William H. Fite Sent: Wednesday, June 08, 2011 4:07 PM To: j...@quik.com; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] locate 6 digit digital clock I think he wants a clock that will actually tell time, rather than one that merely blinks *12:00...12:00...12:00...* [?][?] On Wed, Jun 8, 2011 at 3:10 PM, J. Forsterj...@quik.com wrote: Why not just buy or scrounge a small microwave oven or VCR? -John == Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarkebro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history. See: http://en.wikipedia.org/wiki/Zeller%27s_congruence Have Fun, Brooke Clarke http://www.PRC68.comhttp://www.prc68.com/ ___ 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 mailing list -- time-nuts@febo.com To unsubscribe, go to
Re: [time-nuts] locate 6 digit digital clock
See, in my former existence as a us gov't researcher, I was forced! (yes) to buy stuff from GSA contract, even when the item could be had cheaper and/or much higher quality. GSA is a dumping ground for congressional district hacks. I'd avoid buying anything even tainted with a whiff of GSA, except maybe Agilent or other major suppliers. Just my hard-won $.02 inflated rasbucknicks. Don Robert Watzlavick I would avoid BRG clocks. I've used them in two different companies now and they're pretty much junk in my opinion. Both of the clocks I used had IRIG inputs and they only sort of work. They seem to randomly lose IRIG lock every few days and will easily get 1/2 second off, even when locked. The user interface is incomprehensible and takes me 20 minutes to figure out every time I have to adjust the UTC offset to display local time. Finally the instruction manuals are too complicated to be useful. It seems like they just keep tacking on features to firmware written 20 years ago, even with the new features don't fit the UI model. When IRIG time wouldn't sync up on one of the units, I took it apart and found the clock to be constructed of a metal picture frame with the circuit boards loosely laying inside some green crafting foam and wires running all over the place. Even my electronics projects when I was a kid looked more professional than these clocks. When I reassembled it, the IRIG feature mysteriously started working again, sort of. The prices look very appealing but trust me, stay away - they just don't work. -Bob On 06/08/2011 03:46 PM, Bob Camp wrote: Hi Found the GSA price list at: http://www.brgprecision.com/pdffiles/brg_gsa_contract.pdf Looks like you can get the basic no frills model for about $400 and they go up from there. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of Bob Camp Sent: Wednesday, June 08, 2011 4:35 PM To: 'Discussion of precise time and frequency measurement' Subject: Re: [time-nuts] locate 6 digit digital clock Hi I suspect that something like: http://www.brgprecision.com/products/synchronized_clocks/poe6mega.php would do the trick. No idea what they cost. Bob -Original Message- From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On Behalf Of William H. Fite Sent: Wednesday, June 08, 2011 4:07 PM To: j...@quik.com; Discussion of precise time and frequency measurement Subject: Re: [time-nuts] locate 6 digit digital clock I think he wants a clock that will actually tell time, rather than one that merely blinks *12:00...12:00...12:00...* [?][?] On Wed, Jun 8, 2011 at 3:10 PM, J. Forsterj...@quik.com wrote: Why not just buy or scrounge a small microwave oven or VCR? -John == Please add my me-too to this discussion. I would like to see a clock that simply tells time, reminiscent of the ones I put together in the 1970s, but with LED displays large enough to read from across a darkened room. I would prefer 24-hour format and I want a 6-digit display with seconds. For accuracy, I would want an internal TCXO, with the option of using a 10 MHz or 1 PPS external signal when available, but I want the clock to automatically switch to the internal timebase if the external signal is disconnected or lost With a PIC I would like to see a switch for PDT/PST, so I don't have to reset the clock twice a year. I would also like to see an option for having the clock be self-setting or self-synchronizing by adding an inexpensive GPS module. I don't need date and I don't need DOW or DOY as I already have other clocks and watches that give me that information. It might be useful to have a smaller second line that would show me those, and show me the time in UTC to keep track of what time it is back in the old country when I want to listen to Radio Denmark on the Internet, but this would add to the complexity and the number of solder points. And I would like all this to fit in a spare HP 2U half-width rack-mount case that I have saved for that purpose. This would be a companion to my Thunderbolt GPSDO which is housed in an identical case. One option would be to mount the clock in the same case as the Thunderbird, and have the second line display your choice of GPS signal. -- Flemming Larsen, KB6ADS/OZ6OI Fra:Brooke Clarkebro...@pacific.net Til:Discussion of precise time and frequency measurement time-nuts@febo.com Sendt:7:12 onsdag den 8. juni 2011 Emne:Re: [time-nuts] locate 6 digit digital clock By using a PIC you can do much more than just tell time, for example display the Day of the Week and because the calendar is good back to 1800 something you can set the clock back that far and know the DOW. The next step was going to be to install a table of leap seconds so that you could replay any of those events in history.
