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11-07-2013, 04:09 PM   #1
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K01 - gps

Does anyone know how the GPS connections in the hot shoe work?
I saw this and it makes me wonder if something like that will work with the K01: Emerging Drake: GPS for Nikon D7000 (or D90)

11-07-2013, 04:19 PM   #2
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QuoteOriginally posted by rmalbers Quote
Does anyone know how the GPS connections in the hot shoe work?
I saw this and it makes me wonder if something like that will work with the K01: Emerging Drake: GPS for Nikon D7000 (or D90)
The only compatible GPS is the O-GPS1:
Pentax O-GPS1 GPS Unit - Introduction - PentaxForums.com
Pentax O-GPS1 GPS Module 39012 B&H Photo Video

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11-07-2013, 04:24 PM   #3
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Yes, but if the GPS pinouts on the hot shoe are 'known', a DIY approach may be a fraction of the cost of the Pentax unit.
11-07-2013, 06:46 PM   #4
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I believe it works for geotagging, it's the astrotracer feature that doesn't work. (But this is second hand knowledge.)


Last edited by Doundounba; 11-07-2013 at 06:46 PM. Reason: caveat
11-08-2013, 03:06 AM   #5
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QuoteOriginally posted by rmalbers Quote
Yes, but if the GPS pinouts on the hot shoe are 'known', a DIY approach may be a fraction of the cost of the Pentax unit.
The electrical interface is one thing, but you also have to reverse engineer the data protocol between camera and the Pentax GPS unit.
11-08-2013, 05:22 AM   #6
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The O-GPS does work for the K01 for geotagging.

Dale
11-08-2013, 06:29 AM   #7
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QuoteOriginally posted by StigVidar Quote
The electrical interface is one thing, but you also have to reverse engineer the data protocol between camera and the Pentax GPS unit.
That's the thing, it looks like there is a standard protocol that some GPS use (and cameras use it native), like the link I have in the OP use, so that if Pentax does use a standard protocol and we get the pin out, something like what I linked to might work and can be built cheap!
11-08-2013, 09:30 AM   #8
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The Pentax gps also includes a magnetic compass so I don't think they use a standard protocol for this.

11-09-2013, 02:11 PM   #9
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QuoteOriginally posted by StigVidar Quote
The Pentax gps also includes a magnetic compass so I don't think they use a standard protocol for this.
Have you seen somewhere that Pentax doesn't use a standard protocol. That would make this whole idea a no go.

Compass is part of at least one of the 'standards':


HCHDG - Compass output is used on Garmin etrex summit, vista , and 76S receivers to output the value of the internal flux-gate compass. Only the magnetic heading and magnetic variation is shown in the message.
$HCHDG,101.1,,,7.1,W*3C
where: HCHDG Magnetic heading, deviation, variation 101.1 heading ,, deviation (no data) 7.1,W variation
11-10-2013, 03:05 AM   #10
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QuoteOriginally posted by rmalbers Quote
Have you seen somewhere that Pentax doesn't use a standard protocol. That would make this whole idea a no go.
There was an interview with some Pentax engineers on a japanese site when this gps was released. As you probably know, they use the same pin as the flash to transfer data and they told in the interview how they made this flash communication years ago to also support other devices than just a flash.
11-12-2013, 01:24 PM   #11
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I was talking to a Pentax rep when the Q came out. Told him it was a shame that there was no provision for a EVF. He said "how do you know? Theres a hot shoe." Hmmm.
thanks
barondla
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