On this page...
to get the round Garmin connector and how to assemble it ...
On this page I briefly show you where to get a
Garmin connector and how to assemble it. This text is based on the
connectors by pFranc.
(Larry) designed his own connectors for both the
rectangle shaped Garmin connector and the
round Garmin connectors.
has an interesting phylosophy called "sharehardware",
where you can buy connectors. Buying does not mean PAYING MONEY.
Larry rather sees buying as a trade. You can for example trade money
for the connectors, but also reference on your website (as I did),
other funy stuff, etc. So either trade or spend money - it's up
can be found in several countries!
Note: Read the disclaimer!
model Garmin connector
Below you will find the connector pinout
of the round Garmin connector. It is being used with
the Garmin 12, 12xl, 38, 40, 45, 48, 76, 89, 90, 92, 176, 295, GPS II,
II+, III, III+, V and Street Pilot.
You will need this info to hook your eTrex
to a PDA or PC.
The pin layout is as shown below, please
note the notch at (5). To the left of this notch (solder
side) you will find pin 4. To the right pin 1.
RXD (Data IN)
TXD (Data OUT)
Powersupply (+ 3 Volt)
Tip: If you're busy with an
Garmin connector anyways then you might want to consider adding external
power for the eTrex aswell. Use a 3V powersupply and connect it to pin
4 (+) and 2 (-) of the connector.
The pFranc-connector is a do-it-yourself kit.
In the little bag, you will find three
3 plastic parts, a screw and 4 pins attached to a piece of metal.
Bend the pins zo they come loose from the little piece of metal;
After doing that, you can place the pins
in the cilinder piece of plastic with 5 holes in it. We will not use the
centre hole as it will be used later for the screw.
Onces you placed the four pins, you can
add the little round pice of plastic that has 9 holes on top of the pins.
Now we can solder the wires to the pins.
Be carefull to not use to much heat here as the plastic parts might melt!
Consider using a soldering iron with a fine tip!
TIP: Since you're
busy on the Garmin plug anyway, consider writing down which pin
is connected to which wire. If you're not sure which is which,
then please take a look at the image at the top of this page.
Once you completed the soldering, you can
add the last plastic part, the little cap.
Finally place the screw in the opening
of the cap;
Don't use excesive force when tightening
the screw ... :-)