Hacked Gadgets Forum

October 24, 2007

Rand McNally GPS Hack

at 11:13 pm. Filed under Complex Hacks, Computer Hacks, DIY Hacks, Electronic Hacks

If you can get your hands on a Rand McNally GPS this Rand McNally GPS Hack will show you how to get the serial data out of it. Since these GPS devices are quite old now they should be quite cheap. Does anyone know of a cheaper serial GPS solution? If so please share it with me. πŸ™‚

“Buy a RandMcNally GPS for the Palm III from http://www.randmcnally.com The GPS circuit board is held on to the sub circuit board by a to the sub circuit board by a 5 pin header. Since I did not have a big fat solder iron tip, I held my solder iron accross all five pins, and slowly worked the boards apart slightly. When there is enough room, bend the circuit boards back and fourth untill all five pins break. Be carefull not to over stress the circuit board. If you have a better solder iron, or patience with soaking up all the solder you can easily improve this method. I then removed each individual pin that was left broken in each hole.”


For topical of amelioration eliminating wrinkling, dermal wrinkling retin . Gel acid, A in of weight, a...

Related Posts

Mobile Camera Lens Cap Hack using a Magnet and a Coin
Geiger Counter USB Hack
TI EVALBOT Nintendo Nunchuck Hack
Hide a Hard Drive in a UPS
Ring Tone Door Bell – Ding Tone
Name the Thing Contest – 211
Hack a Sigma Lens to operate with Canon Cameras
Wiimote Autofocus Laser Cutter Hack



8 Responses to “Rand McNally GPS Hack”

  1. Turd Says:

    “Does anyone know of a cheaper serial GPS solution?”
    The garmin etrex (yellow) is cheap:
    Garmin DGPS (4800)
    NMEA (4800)
    Text out (1200, 2400, 4800, 9600)
    RTCM in (1200, 2400, 4800, 9600)
    RTCM/NMEA (4800)
    RTCM/Text (1200, 2400, 4800, 9600)

  2. Alan Parekh Says:

    A used one of those should be nice and cheap. πŸ™‚

  3. Myself Says:

    I recently picked up a pile of USGlobalSat GPS units for $25 each, from their eBay outlet store. These were brand new in the box, SiRF-II chipset units, with WAAS enabled and USB adapters included. (If you omit the adapter, it’s NMEA 0183 data at TTL levels on a PS/2 style Mini-DIN connector.) They appear to have some more up right now:


    Any SiRF GPS owners should check out the SiRF Demo app, which lets you configure the output sentence structure and rate, configure input if you’re using a separate DGPS receiver, download and upload raw ephemeris data tables, and otherwise muck with the innards. http://www.sirf.com/free_demo.html

  4. The Geeky Blog Updates » Blog Archive » Rand McNally GPS Hack Says:

    […] Read the rest of this great post here […]

  5. feki00 Says:

    That white thing on the left is the antenna?

  6. Tom Cardinal Says:

    I picked up a Talon GPS today at a yard sale. It’s the Rand McNally receiver that you wrote about… I paid a single buck for it. Will make a great addition to my APRS project box.

  7. Alan Parekh Says:

    What a deal! Be sure to let us know how the project goes.

  8. jdavila Says:

    Turd Says:
    October 26th, 2007
    β€œDoes anyone know of a cheaper serial GPS solution?”
    Yes. I found a sonocaddie V100 golfer’s gps for a buck, cheap and easy to hack, it has the NMEA serial data coming from the gps module and besides it includes an CP2102 usb-uart transceiver, you only need to isolate the right pads ant wire the serial data from the gps to the RX pin of the transceiver. piece of cake.

    I was trying to decode the serial protocol to see if you can interrogate it for the NMEA data using a serial port spy software.
    the commands looks something like $$OPENEN$$,$$CLOSE$$…etc. baudrate 115200,8,N,1 by the way.

Internal Links:



Hacked Gadgets

Site Sponsors:

Nuts and Volts Electronic Labs Trossen Robotics Free Technical Publications Blue LED


Recent Comments:

More RSS Feed Options

Site Sponsors:


Interesting Sites: