nmea bare wires to serial plug

[Birdseye]

can someone please remind me how you connect the two bare wires of a garmin data cable to a serial plug for the lappy.

would prefer to connect direct to a usb plug but it looks a bit too small for easy soldering to me!

 

[fluffc]

You can't connect directly to a USB plug - it's a different electrical and data specification; completely non-compatible.

The pins required on a 9-pin Serial D are 2,3,5.

5 is ground - connect 'NMEA -ve' or 'NMEA ground' or 'Ground'
2 and 3 are receive and transmit pins (can't remember which way round). Try connecting 'NMEA+' or 'NMEAout' to each pin in turn and see if it works.

Hope this helps... I think the above is correct, from my memory...

 

[marklongstaff]

Standard RS232 to a 9 pin is

2 - RX (Receive Data)
3 - TX (Transmit data)
5 - Ground

Regards, good luck

Mark L.

 

[Rivers & creeks]

I bought a male to female serial plug from Maplins for about £2.50. Soldered the two wires onto the correct pins and then could connect. I tested whether I had got the right pins by connecting the serial plug to the DSC radio.

 

[MikeCC]

You can connect to USB with a serial-USB converter and a 9-pin serial cable.

Chop one end off the serial cable (obviously not the one that will plug in to the converter!) then join relevant wires to GPS cable.

You can take apart the end you cut off to see which wire colours connect to which pin. Beware that some cables will cross wires 2 and 3, so you may still need to experiement a little.