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Comment by vax425 | Hacker News Reader

I'm launching a new product for my clock-making business: https://DigitalHorology.com

None of my clocks tell the time.

They're all fully automatic GPS-enabled timepieces. For a couple of years I've been developing, hand-making, and selling these clocks that track the moon phase, the sun's position, etc.

My new idea is the tide clock "NautiKron." It's getting a lot of interest from US coastal buyers.

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These are great! I love the natural aesthetic with wood as well. I'm curious: how do you sync them to gps?

Thanks! I'm really glad you like the LunaKron. I make a couple other versions that have less wood aesthetic and more futuristic black acrylic with a photorealistic, silvery moon.

I connect a tiny GPS module to the Arduino via 3 wires: power, ground, and serial input, and use Mikal Hart's "TinyGPSPlus" module to parse the NMEA data streams.

NautiKron seems to show the current hour in the top row. Why not project it on the tide curve?

Putting the marker inside the tide curve would give it a cleaner look.

I considered it, and figured it was more legible to have the hour marker directly under the numbers. People looking at the NautiKron from across the room or who have low vision might like it better this way.

Good idea to revisit -- I'm always tweaking the designs and responding to owner feedback.

Thanks for the comment!

Love these! Where did you get the idea? Would love to know more.

Thanks! I posted the story here: https://www.etsy.com/shop/DigitalHorology?#about

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