Somewhat new time-nut here (had one of the Samsung-branded Z3805s for a few months as a house 10mhz ref, but it really got out of control when I acquired a Wavecrest DTS, multiple frequency counters, an old Astron 1250a, a Lucent RFTG-u pair, etc.), thought I should finally de-lurk since I can perhaps offer some useful opinion on this. Comments inline.
On Sat, Jul 04, 2015 at 06:13:06AM -0700, Jim Lux wrote: > I've got a project I'm working on to make a sophisticated sundial > with moving mirrors. I've got a batch of Arduinos that move the > mirrors to the appropriate places, given the current sun angle, etc. I guess you are making a human-readable sundial, I was thinking recently about building a computerized mean-solar-noon tracker, just to see what sort of accuracy I can get. Haven't decided between a cheap fisheye camera behind a dark filter (welding lens?) versus a sort of slot-lens (like a pinhole, but to tolerate the seasonal change in north-south elevation) with a wide-range light sensor (CdS or a modern ambient light sensor IC). > I've got a beaglebone that runs some python code to calculate sun > angle based on time [...] > Or are there libraries that make this more cookbook? (the little > "getting started with beaglebone" book talks about flask) In a previous contract job, I did some work with Flask, it's pretty nice, especially for the basic case of "make this subset of the URL space be handled by this function". I haven't set it up from scratch, but the Flask documentation seems pretty good, and if you're already familiar with Python, I'd highly recommend it. Mike _______________________________________________ time-nuts mailing list -- [email protected] To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.
