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Old 04-12-2015, 11:51   #1
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Sub $200 GPS Speedo

Looking to Pick up a Christmas present for a Junior Sailor. Something like a Velocitek, Big Display, Speed and COG, Data Logging. Waterproof and Durable are necessary.

Anything like this exist or shall I start putting something together in the shop?

Thanks
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Old 05-12-2015, 10:14   #2
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Re: Sub $200 GPS Speedo

Your phone with a $10 sailing app and a $40 waterproof case. Add in a $10 external battery if you don't want it to die down.

Done.

I'm actually seriously considering not replacing any of my onboard equipment once it goes, a Tablet and smartphone's GPS work anywhere in the world without any extra charge and are far more granular than the stupid knot meters that always clog up.
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Old 05-12-2015, 11:06   #3
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Re: Sub $200 GPS Speedo

So I messed around last night with some electronic stuff I had laying around, wrote come code, and have a working model. The display are just LED 7 segment not a transreflective LCD so they have readability issues in full sunlight, but it works, and it was a hell of a lot less than $349.00 that Velocitek wants. 10htz update, with COG over Speed. Sorting out the logging side currently. I guess Monday Ill send an email looking for some quality LCD's.

What Gages are you missing? I Basically built a NMEA 0183 GPS unit to send GPS signals, then a Display unit to take that NMEA stream and parse then display it. Wouldn't be too hard to make a Display that would display any incoming NMEA data. A Universal gage sort of. I am sure I could do it for much less than the $300-$700 that the big guys want for instruments that just display one or two items.
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Old 13-12-2015, 13:08   #4
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Re: Sub $200 GPS Speedo

Uncle Augie, how much further has your project progressed?
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Old 14-12-2015, 14:35   #5
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Re: Sub $200 GPS Speedo

99% complete, finishing up packaging a version. Heading on top display speed on bottom, data recording as well. Thinking I could build them for 149ish

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Old 14-12-2015, 15:06   #6
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Re: Sub $200 GPS Speedo

It is difficult to buy a copy of decent big letters display at anything than a rip off price.

NASA marine makes something like this: Misc: NASA Marine Instruments

but it is not too cheap at all. And NASA is not a top shelf option at all either. Still I think an entry point into this sort of toys.

As others said: A decent smartphone with a good app can be a great choice (just mind those salt water splashes).

b.
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Old 14-12-2015, 15:10   #7
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Re: Sub $200 GPS Speedo

That is basically what I made, but it would also display nmea 2k and the new signal k format as well

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Old 14-12-2015, 16:35   #8
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Re: Sub $200 GPS Speedo

Please post a picture if you are willing to share!
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