[time-nuts] New stuff in my Tindie store
nsayer at kfu.com
Mon Dec 26 23:47:03 EST 2016
The last time I checked, the population of New Zealand was about the same as the population of Los Angeles. I don’t have any data to suggest that the proportion of New Zealanders in the market for a GPS clock is markedly different than elsewhere. When developing new products, I tend to make certain assumptions about market sizes in deciding what priority to apply to feature sets.
That said, it *is* open source firmware.
As for the +13 timezones, if you turn off DST, then +13 is the same as -11 for the purpose of this clock (it doesn’t display the date). The clock doesn’t currently support non-hour (that is, half- or quarter-hour) zones, again because it wasn’t a priority.
If a Tongan wants to *actually* buy one, then maybe I’ll roll some custom firmware for him or her. :)
> On Dec 26, 2016, at 8:27 PM, Will Kimber <zl1tao at gmx.com> wrote:
> Hi Nick,
> Sorry to rain on your parade. A good idea BUT ...
> As a new (45 years) New Zealander may I make a couple of suggestions that folks back where I come from and others across the pond forget.
> The Pacific Ocean is large and very spread out. So the Chatham Islands, though part of New Zealand are 45 minutes ahead of New Zealand time. That is a real nasty and unusual time change. Plus NZ daylight time being GMT +13
> Next are the Islands making up Tonga. To keep the day consistent with New Zealand, Australia, other Pacific Islands & Asia went to G.M.T. +13 as its timezone a few years back.
> On 12/27/2016 04:40 PM, Nick Sayer via time-nuts wrote:
>> I’ve finally added the power supply I’ve designed for the Thunderbolt. It’s a combined switching+linear design. It’s been running my own Thunderbolt for a while now. There’s a schematic on the store page and it can come with or without a 15W primary supply. https://www.tindie.com/products/nsayer/thunderbolt-power-board/ <https://www.tindie.com/products/nsayer/thunderbolt-power-board/>
>> The second one will be up next week, and it’s a simple GPS clock. It has 7 seg LEDs for hour, minute, second and tenth of a second (the later is interpolated from the PPS). My educated guess is that the tenths are accurate to around 200 µs or so (the zeroeth is probably much better). It has support for +/- 12 hours of timezones, 12- or 24-hour time display (with AM and PM LEDs) and DST for US, EU or Australia (or off). It can come as a board-only “quick kit” (surface mount components all done and programmed, through-hole left for you to do), a “quick kit” with a laser cut wood and acrylic case and plug-in power supply, or assembled (in the case, with the power supply). It has an SMA jack for an external antenna (that is not included). 3.3V is supplied for active antennas. Board-only quick kit will be $59.99, assembled $99.99. I’m just waiting for the inventory of boards to come in before I activate that store listing. But for now, there’s the Hackaday project page: https://hackaday.io/project/18501-gps-clock <https://hackaday.io/project/18501-gps-clock>
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