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Thread: Garmin Mobile PC - Updating only once a second (ie Jerky)

  1. #11
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    Quote Originally Posted by bambam View Post
    I tried out the Garmin Mobile PC software this weekend and experienced the same exact thing plus, the "ding" right before the turn was way too premature. I am using the BU353 receiver and love it. It has always worked great for me with iGuidance and MS S&T 2008 (and 2007). I'm not going to invest even more money for another receiver in "hope" that is corrects these flaws...I'm just going to ditch the Garmin software and buy the newest iGuidance this week to use in my carpc frontend and use S&T 2008 for a backup when needed...
    This is because your GPS have update only 1Hz - 1x per second...

  2. #12
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    It seems that alot of you are not understanding that Garmin's system reacts dirfferently than iguidance there maps dont flow the same as garmins you will get a better response if you have a gps receiver than can be set to different rates. the problem isn't the software the problem is the gps receivers its like trying to run a windows program oa a mac you can do it if it is tweaked like if you run wine my gps receiver works better with Garmin than with other programs but its not the programs its my receiver.

  3. #13
    Variable Bitrate bambam's Avatar
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    Quote Originally Posted by _Dejan_ View Post
    This is because your GPS have update only 1Hz - 1x per second...
    That may be so but, iGuidance AND Streets and Trips display perfectly without jerkiness and both "ding" exactly on time. In fact, I remember trying Delorme and that worked great to. Blame it on the receiver all you want but the fact of the matter is that all the gps software I tried with the BU353 work perfectly EXCEPT Garmin....draw any conclusion you want from that statement but it seems obvious to me....
    "Imagination is more important than knowledge." -AE

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    yeah, just to reitterate what dejan and biggkatt have said. I was running a 1Hz receiver (BU-353). upgraded to a 5Hz receiver and its heaps better. The only thing is, the Garmin baud rate on a usb port seems to be fixed at 38.4kbps, so i have to run mine over bluetooth where the baud is 115.2kbps. Otherwise it simply doesn't detect the receiver.

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    Quote Originally Posted by bambam View Post
    That may be so but, iGuidance AND Streets and Trips display perfectly without jerkiness and both "ding" exactly on time. In fact, I remember trying Delorme and that worked great to. Blame it on the receiver all you want but the fact of the matter is that all the gps software I tried with the BU353 work perfectly EXCEPT Garmin....draw any conclusion you want from that statement but it seems obvious to me....
    If you read again what we are write you will see that only better GPS device(With 5Hz) will fix this. Why? Because GMPC show/write your position from real GPS position, so I will explain this.
    You gave GPS positions A, B, C, D, E, F which you receive every second(Because you have 1Hz receiver)
    GMPC:
    receive position A -> show you on position A
    receive position B -> show you on position B
    receive position C -> show you on position C
    receive position D -> show you on position D
    receive position E -> show you on position E
    receive position F -> show you on position F

    So you see real position on time, and with 1Hz receiver work "jerky"
    iGo or any other software:
    receive position A -> do nothing
    receive position B -> show you on position A and moving you to position B
    receive position C -> show you on position B and moving you to position C
    receive position D -> show you on position C and moving you to position D
    receive position E -> show you on position D and moving you to position E
    receive position F -> show you on position E and moving you to position F

    And you see your position like normaly moving...

  6. #16
    Low Bitrate Queenambeach's Avatar
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    Cool

    Get a GlobalTop G33 Bluetooth GPS (51ch. MTK chipset, 5Hz)
    It updates at 5Hz and is only $46 on ebay. It works perfectly in software that allows
    higher than a 1 Hz refresh rate. For software that only allows a 1Hz refresh rate, the updates will still be more accurate.

  7. #17
    Variable Bitrate bambam's Avatar
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    Quote Originally Posted by _Dejan_ View Post
    If you read again what we are write you will see that.....
    I totally understand AND agree with what you are saying. All I am stating is that the Garmin software does not show me anything that would justify me spending more money on a new receiver. iGuidance and S&T do the job with what I have and I'm happy with them and the reliability of the BU353 receiver...
    "Imagination is more important than knowledge." -AE

  8. #18
    FLAC Marvin Hlavac's Avatar
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    A few weeks ago I tested Garmin Mobile PC w/5Hz receiver. The difference was immediately noticeable. The map movement was smoother. Would I recommend someone throws away a perfectly functional 1Hz unit? No. But 5Hz + Mobile PC is nice. If you are in the market for a new hardware, you may consider 5Hz.

    By the way, I'm back to using my old 1Hz BU-353 - and I'm content with it. I gave away my 5Hz receiver to a member of my forum, so he can play with it now.

  9. #19
    FLAC Griff1's Avatar
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    Quote Originally Posted by bambam View Post
    I totally understand AND agree with what you are saying. All I am stating is that the Garmin software does not show me anything that would justify me spending more money on a new receiver. iGuidance and S&T do the job with what I have and I'm happy with them and the reliability of the BU353 receiver...
    Well garmin sell a 5hz receiver for use with GarminMobile pc and that in itself is the reason its not as good when refreshing at 1hz,they want you to buy their device for you to get the best out of it.

    A 5hz unit is way better even in iGo,in tests between the BU-353 and the MTK HG-100 BT HUD gps unit iGo is much much smoother.
    P4 2.8 HT, 512Mb Ram, 60Gb 2.5 HD, M4-ATX, SB Audigy2, BU353, Lilliput TS,Soundgraph Imon VFD,SONY Optiarc dvd Burner,RideRunner, iGo8, Custom Freedom 2.1

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