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_Art_

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    GPSMAP 66 Firmware 2.50 Now Available, 2019-02-01

    in GPS technology and devices

    Posted

    I went over and was there for the update. It crashed starting up straight after, but was ok starting up after that.

    Not much time to test a lot other than I was most interested in, but the problem exiting the Recording Controls menu (back to map screen) appears to be fixed.

     

    It still crashes browsing the map at low zoom level. Anything from 8km to 20km if Birdseye imagery is enabled.

    Birdseye imagery is no longer displayed if you zoom out further than 20km printed on the scale.

    Where the ordinary Garmin Topo map could crash it before, it appears to only happen for Birdseye imagery now.

    I think it would be fixed for now if they simply disabled Birdseye imagery for any view above the 5km zoom level.

     

    This is the downloaded highest quality sat imagery. For HEMA raster map which is also just a bunch of jnx files that cover all of Australia,

    that is displayed up to 12km zoom level, and doesn’t seem to crash it at all.

    Maybe it’s just that it’s the high quality imagery that it can’t handle it. The same imagery is used with my 64st and never has a problem, so I’m only comparing to that.

     

     

     

    GPS MAP 66 Mark Waypoint Question

    in GPS technology and devices

    Posted

    Maybe they don’t like using the same names again, knowing that 001-008 names exist in another track. In reality, you wouldn’t really confuse the same names in an entirely different track.

     

    Have you tried that auto prefix feature of the 66 and seen what that does? Maybe changing a couple of letters as a prefix for each hike would reset the numeric part.

    None of this answers your question, it’s just some thoughts really. I haven’t even marked a waypoint on it myself, but have seen the prefix part in the menu IIRC.

     

    Garmin HEMA Australia Review

    in GPS technology and devices

    Posted · Edited by _Art_

    It came out yesterday, and I got it first. It sux in every possible way.

    Garmin Topo LITE Australia is much better for half the price, and the HEMA raster mapping covers that up.

    The raster mapping is just Birdseye jnx files, which subtract from the total jnx files you can have on a device.

    The GPSr doesn’t know anything about what it’s displaying, where the Garmin Topo LITE vector map does.

    The raster mapping has limited street detail.

    The raster mapping includes contour lines which are fuzzy at some zoom levels.

     

    The POIs are more  comprehensive, and include info about toilets, etc. for sites. POIs are free.

     

    I can’t even think of a single redeeming feature. These are both 64st screenshots compared HEMA to Garmin Topo V6.

    V6 is the full version, which is the same price. I should have turned Birdseye imagery off, but you can still see the contours.

    Garmin Topo screenshots are nigh time mode also.

     

    https://imgur.com/a/k0X2hyX

     

    Cheers.

     

    Garmin GPSMAP 66 series announced on 2018-08-06

    in GPS technology and devices

    Posted

    I do have the envelope and pm area, but no new messages, and no messages at all. If it weren’t for the email I wouldn’t know I got a message.

     

    Yes I wasn’t going to mention that. It was about ten years ago, I expected it to work at the time, and they may well, but I never tested with a device.

    I did test and use 60CSx Whiz.

    With more experience, I wouldn’t send anything like that out into the world these days (Oregon/Colorado Whiz) without testing it on a device myself.

    60CSx Whiz works great, but any online version could be infected with a 90’s trojan called “Virtob”. To use it, you’d have to have a virtual machine to burn.

    I lost source and exe for this, and helped spread a bad version no doubt, by downloading it, and further uploading it myself.

     

    With 64st Whiz I was a lot more careful. I still have no virus checker, but a clean computer just for the IDE, and was careful to make videos showing and describing it.

    I’ve got a stack of HDD caddies for this, with IDE installations that simply aren’t allowed on any network, except Microsoft for Windows Update, and Visual Studio.

     

     

     

    Garmin GPSMAP 66 series announced on 2018-08-06

    in GPS technology and devices

    Posted

    @Atlas Cached I got email notification of a private message from you, and the email included the actual message, but nothing here?

    When I check one the forum, I’ve never received a pm yet since joining.

     

    Anyways, I’ve heard that before. Did Garmin say so? 

     

    For 64st Whiz, I have the device for testing, but I don’t think I’ll ever have an Oregon.

    Although you can use photographic or cartoonish images, I wanted mainly to flatten the 64’s otherwise dithered textures, and just have plain flat colour backgrounds.

    I wasn’t even motivated to write it again for 66 because Garmin already did the GUI this way this time :D 

     

    Chirp Qs

    in GPS technology and devices

    Posted

    HI, I’ve done a little research, but was mainly bothered about hardware until about now.

    The low level RF communication I expect to be abstracted away by the OS, and the fellow who wrote that App linked above alluded to the same.

    It would be lucky for a proprietary thing like that to be out in the open.

     

    If it were full understood, my goal would probably be to replace the message, and make that dynamic, like the current temperature or something.

     

    So far what I can do is read in either SPI channel up to 8000 bytes (which is probably a number of complete transactions), and spit that out again

    slowly and Human readable, from a serial port to read on a terminal, or a file on SD card or something like that. The serial terminal is the easiest bet right now.

     

     

    Chirp Qs

    in GPS technology and devices

    Posted · Edited by _Art_

    Hi :)

     

    A bit of an update. Never mind the terrible ringing on the scope traces... my scope probe there was just wires & alligator clips,

    but here’s an example SPI byte transmitted (I forget which direction this is relative to the mcu & RF transceiver).

    Scope SPI:
    https://imgur.com/a/QpYJKQP

     

    Too fast for software SPI functions, and I need one hardware SPI module for an SD card eventually, so I decided to make a third hardware SPI peripheral for the dsPic with two shift registers.

    This image shows the last byte in whatever packet was being transmitted on the row of eight white LEDs.

    Hardware SPI:
    https://imgur.com/a/u6dxQQu

     

    This allows my mcu SPI routine to read faster because the shift register hardware takes care of bit banging, and I only have to read in parallel bytes for that channel.

    The structure so far:

    Chirp Structure:
    https://imgur.com/a/JY0otbC

     

    Cheers.

     

     

    Chirp Qs

    in GPS technology and devices

    Posted · Edited by _Art_

    I suspect that the Ant support and the dongles do the encryption, and provide access to use it through an API.

    Being able to write an App doesn’t mean the author is privy to that kind of information, but it’s worth a shot.

     

    EDIT,

    I send an email and got a reply. It’s used through an API that wouldn’t provide access to encryption (that I’m assuming to be employed).

    Basically, for an example, anyone can write an iPhone App that plays music form the user’s library, but you can never see inside the music file,

    extract data from it, see frequency values to write a spectrum display, or anything else to access the music files. You basically get a list of songs,

    and tell the iPhone to play one of them. Not even Apple can access the actual data (I suspect) or their own music App would have a spectrum display.

     

     

     

    Garmin 64st Waypoint distance problems

    in GPS technology and devices

    Posted

    Is there a way to reproduce this with a 64st on fw 5.10 if I’m in Australia?

     

    I’d guess that either the GPS or destination coords aren’t being sent to the distance function.

    The distance calculation itself is pretty benign stuff

      

    
// calculate haversine distance in Km
float getdistance(double lat1, double long1) {
double lat2 = gpslat;
double long2 = gpslon;
double dlong = (long2 - long1) * d2r;
double dlat = (lat2 - lat1) * d2r;
double a = pow(sin(dlat/2.0), 2) + cos(lat1*d2r) * cos(lat2*d2r) * pow(sin(dlong/2.0), 2);
double c = 2 * atan2(sqrt(a), sqrt(1-a));
float distf = 6367 * c;
return(distf);
}

     

    Garmin GPSMAP 66 series announced on 2018-08-06

    in GPS technology and devices

    Posted

    I had trouble with support as well for my 64st. Basecamp couldn’t unlock or send the map product to the GPSr.

    It isn’t possible for me to call them, and also have a PC or even the GPSr at the same time at work, since the support line is business hours only.

    I ended up using piracy tools to unlock my own map, patch the device firmware, and basically go through all the motions of pirating a map that I paid for.

     

    For the 66st, I purchased the SD card version of the map.

     

     

     

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