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home | newest check | boards | help index | log | ps | userlogin | send sysop | slog | status forward | bcm news | users | version | remove cookieKO6NMZ > ASTRO 09.08.26 13:56l 19 Lines 977 Bytes #8 (0) @ WW BID : TJH532KO6NMZ Read: GUEST Subj: Celestial Navigation Path: JH4XSY<N3HYM<KA3VSP<N3MEL<KQ6UP<KO6NMZ Sent: 260808/2326z @:KO6NMZ.#SCA.CA.USA.NOAM [Grand Terrace] DP6.15 $:TJH532KO6 From: KO6NMZ @ KO6NMZ.#SCA.CA.USA.NOAM (Maria) To: ASTRO @ WW I just wrote a program for a little Arduino board (a tiny computer on a chip). This little project has its own screen and allows you to enter a sextant shot via rotary encoders to generate a Lat/Long fix. The computer sets the clock on shore via a Wi-Fi connection to an NTP server. That time gets stored in an RTC (clock chip) that has its own battery. This is the only Arduino project like this that I am aware of. There are cards for the HP48 calculator that do this, but I wanted a small, stand-alone unit. I have breadboarded this, and it works, but there is also a simulation of it here: [https://wokwi.com/projects/471829116081713153](https://wokwi.com/projects/4718 Maybe someone would be interested in this, so I thought I would share it here. Future versions will have a clock offset table to autocorrect RTC drift. It would also be neat to have an Arduino that can sync to WWV. -73 de Chris KQ6UP
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