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Description: The GP-2106 is a really tiny GPS module. It's so small, in fact, that it's almost too small to use. Not only that, but the 1.8V logic levels aren't compatible with a lot of systems. So we rolled an evaluation board! Don't worry, it's still pretty small.

The GP-2106 Evaluation Board features everything you need to get the GP-2106 module talking to your system. Because the GP-2106 is a 1.8V module, we've provided level-shifting for 3.3 and 5V systems. The board also features a PPS status LED, on/off button and an FTDI Basic compatible header!

To turn the board on, you'll have to hold the ON/OFF button for one second. There is also an "ONOFF" pin on the board that you can use to turn the board on in-system by pulling it low for about a second.

This board does not come with the GP-2106 GPS module or the connecting ribbon cable. Both can be found in the related items below.

Documents:

Comments 16 comments

  • The ribbon cable seems loose on the connector. There’s no real fit to it, it just falls out. Is this to be expected? If so, what solutions are others using? Hot glue?

    • I’m not in the office to check, but the ribbon cable connector should have a locking feature. Insert the cable, and try sliding the black and gray parts together. Something should move and lock the cable in place.

      • Thanks! It’s pretty obvious once you know it’s there, but a little hard to spot if you don’t.

        For anyone else, the black tab on the back of the connector rotates. When it’s pointed up (90 degree angle with the PCB/connector), the connector is open. Rotate it down so that it’s parallel to the PCB and it locks.

  • Could I possibly get exact dimensions for this board please?

    • Appreciated.

    • Time to install Eagle :) You can then open the Eagle file(s) and get the dimensions.

      That said, I’m all in favor of SFE posting dimensions with their boards, so here’s the dimensions in plaintext for ya.

      • Length: 1.05"
      • Width: 0.9"
      • Mounting hole positions: 0.1" from both edges
      • Mounting hole diameter: 0.13" (~3.3mm)
      • Breakout pad positions: 0.05" from width edge, 0.1" from length edge, standard 0.1" spacing between pads.
      • Center of push button should be at: x=0.4", y=0.75". If you need the height, check the datasheet :)
  • Those are photos of the contraption i made for the GP2106 & all

    https://plus.google.com/u/0/116887879211008829976/posts

    i get on the sdcard a confif.txt showing baudrate to be 9600. here .txt looks like : 9600,26,3,0,1,1 baud,escape,esc#,mode,verb,echo log21.txtlooks like : xÊÊÊxû‡xÊxxÜxfxûòÄxÊ~ûÜxxfx¯xxxÜx‡xx‡Ü‡Ü‡Ü‡Ü‡ÜxÜxx܇܇ÜÊò‡ÜxÜxÜÊò‡Ü‡ÜxxxxffxÄûòÄxÊ~ûò

    Sparkfun support suggeted i get conflictual baudrate between the gps and theOpenLog. Has you can see everythng is compact.

    can i change the baudrate of the evaluation board

  • What is value of resistor connected to led on this evaluation board,

    0.27 is shown in schematic, on resistor value is .27,

    when I checked with multimeter it showed .4 to .5 ohm

    thanks

    • Should be 0.27 Ohms. Did you measure the resistor out of circuit? It really shouldn’t matter though, the only difference would be that the LED would be slightly more dim, and you probably wouldn’t even be able to notice it.

  • Question: Is there any way to remove on/off button/interface. Right now, to start module I have to press that button on GP- 2106. Is there any work around ? THANKS.

    ANSWER: Customer should use its own GPIO to control the On/Off. Then they don’t need the button. BR//Jason

  • could anyone tell me which IC is used to regulate 1.8 v?

    I found in schematic

    Device: V_REG_LDOSMD2

    Name: U2 and 1.8v

    Package: SC70

    by the way performance of this module is superb, usually it locks within 40 seconds and gives me an accuracy of 1.6 to 2.5 m in open sky conditions,

    I am using it as an external bluetooth gps to my android phone.

    :D

    UPDATE: MIC5366

  • is there any tutorial, how to interface?

    • You can plug an FTDI basic (3.3 or 5V) into the header pins, see related items.

      Also, you can connect it to something like an Arduino pro mini (but you would need to swap TX and RX connection).

      • thanks,

        I had not connected cable connector properly. Now its working.

        performance of GP-2106 is good in open sky,

        but takes long duration indoor :(


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