12:03 < hoyhoy> I'm going to point a web cam at my wall clock and use pymorph to sync it to an ntp server with the help of a stepper motor 12:03 < hoyhoy> who's with me? 12:03 <@gregh> I think you should do it the other way and create an ntp reference source based on your wall clock 12:03 < hoyhoy> that wouldn't be challenging enough 12:04 <@gregh> bet you could make slashdot with it though 12:04 < hoyhoy> I think the other way would be more of a slashdot thing 12:05 < hoyhoy> another consequence of that is that your wall clock automagically adjusts to daylight savings time. 12:05 <@gregh> now that would be spiffy 12:05 < hoyhoy> it has to be invisible though 12:06 <@gregh> no wires, hook it up with bluetooth 12:06 < hoyhoy> what's the smallest stepper motor available? 12:06 < hoyhoy> that'd be some hellacious PIC microcontroller work though. 12:06 <@gregh> heh 12:07 <@gregh> so do the software on a pc and just send step signals to the clock like an RC car 12:07 < hoyhoy> ooooh, I have some zipzap cars around. 12:08 < hoyhoy> there's an RPM to hook the controls into a lunix box 12:08 < hoyhoy> and the reciever is ridiculously small 12:08 < hoyhoy> probably would still need a PIC though 12:09 < hoyhoy> to interface to the stepper motor 12:11 < hoyhoy> I doubt the zipzap motor is strong enough to turn the clock even if it was possible to sync up a certain duration of engine rotation to a certain amount of time. 12:11 < hoyhoy> I suppose I could make some kind of gear mechanism to turn the clock ridiculously slow. 12:11 < hoyhoy> like 10 seconds of rotation = +1 minute 12:12 < hoyhoy> but the 1/3AAA battery would likely run out. 12:14 <@TheCougar> actually, you can change the oscilator that drives the clock 12:14 <@TheCougar> model railroaders do it to simulate a full day in a few hours 12:14 <@TheCougar> you could use a VCO that could be commanded via bluetooth 12:15 <@TheCougar> as it starts to fall out of sync, you speed up or slow down the oscilator a bit 12:16 < hoyhoy> I think it would be better to do an update every 6 or 12 hours 12:16 < hoyhoy> I don't want to have to run AC to the clock 12:17 < hoyhoy> every 6 hours sync the wall clock time.nist.gov 12:18 <@TheCougar> who's talking about running AC to the clock? 12:18 <@TheCougar> and btw, any clock that uses AC as a timebase never needs to be reset (other than for DST) 12:18 < hoyhoy> yeah 12:19 <@gregh> in theory :) 12:19 < hoyhoy> well, constant updates over RF would probably take it's toll on the battery. 12:19 < hoyhoy> I guess the clock is only rxing 12:20 < hoyhoy> still, power is a concern 12:20 < hoyhoy> I think a 6 hour rule or on a CDT/CST boundary would be sufficient. 12:20 < hoyhoy> for syncs 12:22 < hoyhoy> maybe just daily updates at 3 AM. 12:22 < hoyhoy> yeah, then that would CDT<->CST 12:23 <@TheCougar> depends on how accurate you want to be and how badly the clock drifts 12:24 < hoyhoy> then I can create charts that calculate clock drift per day, and have the sync algorithm and determine the differential equations that equate clock drift to battery drain. 12:25 * Nugget watches hoyhoy reinvent xntpd 12:25 < hoyhoy> then absolve the need for pymorph after a certain amount of data collection. 12:26 < hoyhoy> then I can go into business selling analog clocks that sync to ntpd