Re: [neonixie-l] Re: Nixie Nirvana update

[Jeffry Portell]

I have 7971's to trade.

want list:
GR414
CD47
ZM1047
ZM1049
XN27
NL-926
GA1
LL-557
LL-555

On Thu, Sep 30, 2021 at 2:38 PM Dekatron42 
wrote:

> So, what Nixies do you have that you are offering for trade and what are
> you looking for to add to your collection?
>
> /Martin
>
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Re: [neonixie-l] Re: Nixie Nirvana update

[Dekatron42]

So, what Nixies do you have that you are offering for trade and what are 
you looking for to add to your collection?

/Martin

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Re: [neonixie-l] Re: Nixie Nirvana update

[Audrey]

Wow that's amazing!

On Thu, Sep 30, 2021, 2:55 PM gregebert  wrote:

> Nice collection!  I have far fewer, but I store most of them in steel ammo
> cases just in case a disaster happens.
>
> On Thursday, September 30, 2021 at 11:25:08 AM UTC-7 Jeffry P wrote:
>
>> Hi all,
>>
>> All the tubes have been sorted into bins and I managed to clear a shelf
>> unit to store them on. I obtained all the red bins at a pharmacy auction so
>> don't be alarmed at some of the old labels still attached. I think I have
>> about 95 different types of tubes plus some vintage LEDs, pandicons, and
>> pixies.
>> I know one can never have enough B7971's, but I have more tubes than I
>> have ideas about what to do with them. I'm interested in trading some in
>> order to fill some holes in my collection. Serious inquiries will be
>> considered.
>> I am looking for a control box for an Axiris audio visualizer if anyone
>> happens to have an extra.
>> [image: nixies shelf 1.jpg]
>>
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> .
>

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[neonixie-l] Re: Nixie Nirvana update

[gregebert]

Nice collection!  I have far fewer, but I store most of them in steel ammo 
cases just in case a disaster happens.

On Thursday, September 30, 2021 at 11:25:08 AM UTC-7 Jeffry P wrote:

> Hi all,
>
> All the tubes have been sorted into bins and I managed to clear a shelf 
> unit to store them on. I obtained all the red bins at a pharmacy auction so 
> don't be alarmed at some of the old labels still attached. I think I have 
> about 95 different types of tubes plus some vintage LEDs, pandicons, and 
> pixies.
> I know one can never have enough B7971's, but I have more tubes than I 
> have ideas about what to do with them. I'm interested in trading some in 
> order to fill some holes in my collection. Serious inquiries will be 
> considered.
> I am looking for a control box for an Axiris audio visualizer if anyone 
> happens to have an extra.
> [image: nixies shelf 1.jpg]
>

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Re: [neonixie-l] Re: Managing RTC when there's GPS time

[Gavin Andrews]

Many ways to skin a cat!

I use the RTC and it's 1Hz output for normal operation. And then at 3am I
use a GPS (which actually is an ESP-01) to connect NTP and send a fake GPS
message which then syncs the RTC.

The only niggle is DST on the RTC and the GPS sides... I operate with a DST
rule and the RTC so the clock would continue to run correctly even if a
zombie apocalypse took out the NTP infrastructure. (I actually have a RPi
on my local network which amongst other things provides NTP to the local
network)

Regards
G

On Wed, 29 Sep 2021, 19:44 Paul Andrews,  wrote:

> I use NTP. I pull time from the RTC until I get a a sync from the internet
> - then I switch to the internet and I update the RTC whenever I get an
> update from the network. It all uses UTC, which is converted to local time
> for display.
>
> On Wednesday, September 29, 2021 at 2:01:32 PM UTC-4 gregebert wrote:
>
>> I'm using network time that my Raspberry Pi re-acquires roughly every 20
>> minutes, with a DS3232 for backup when the internet is down. I need to
>> tweak the software a bit more to automatically update the DS3232; right now
>> I have to use my debug utility to manually update it. But this does allow
>> me to see how much long-term drift there is. Here is an actual check from
>> today:
>>
>> INIT: RTC module = 09/29/21 08:52:56
>> INFO: NTP sync acquired at 09/29/21 09:52:12
>>
>> It's been about 6 months since I sync'd the time, and this particular
>> DS3232 RTC has gained 44 seconds. That's about 3PPM, which is pretty close
>> to the datasheet spec of 2PPM. I have not made any attempt to use the trim
>> register yet, but now that I have this data I might give that a shot.
>>
>>
>>
>>
>> On Wednesday, September 29, 2021 at 9:34:27 AM UTC-7 nixiebunny wrote:
>>
>>> My latest scope clock uses a DS3232 RTC chip for general timekeeping.
>>> This chip only keeps time to the nearest second, as far as the
>>> user-readable registers are concerned.
>>> I also have a USB port that can read the time from a GlobalSat GPS puck.
>>> This reports the time once a second through the Arduino TinyGPS library,
>>> with the age of the time in milliseconds (typically 250). This should let
>>> me compensate for the read delay by setting the tick (50/60Hz) counter in
>>> my local time variables.
>>> What do any of you time nuts do about displaying the time accurately,
>>> and making the RTC be reasonably accurate compared to the GPS?
>>> Do you discipline the RTC with GPS? Do you just ignore the RTC when GPS
>>> is available? Set the RTC occasionally?
>>>
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