sparkfun minimod GPS

Haby86

Hi,

I got the sparkfun minimod GPS and I want to see the GPS data on the hyperterminal. I connected the GPS to RS232 shifter and connected the shifter to the pc using a serial cable. However all what I'm getting on the hyperterminal is dummy data! what could be the problem?

thanks in advance.

Anubisbot

Baudrate ?? i would check the baudrate from the terminal. And just test it with diffrent settings.
My GPS came preset to 57600 baut and when i tryed it with 9600 i just got jibrish.

Best regards Anubisbot

Drone

@Haby86,

Welcome to the Forum!

What exactly are you trying to do? It seems from reading your post that you are trying to connect the Sparkfun GPS Minimod directly to your PC and read NMEA sentence serial data via hyperterminal as a first-step before trying to connect it to the Propeller for further processing?

If so... The 3.3V serial output from the GPS Minimod will typically NOT work with a PC's serial port. You need an RS-232/logic-level converter. Do a Web search for the likes of "MAXIM MAX3232" or "MAX232". RS-232 has a plus-minus voltage swing, not uni-polar (but some laptops-mostly can accept 5V uni-polar serial RS-232).

If you are trying to use the Propeller to interface with the GPS Minimod, then in my opinion we need to know more about your application. Be as detailed as possible. There are good examples of Propeller GPS objects that support NMEA sentences in the Propeller Object Exchange (ObEx as I call it). Point your browser here here:

obex.parallax.com/

Regards, David

Chris Savage

Example RS-232 interface circuits can be found at the link below. You would just use the MAX3232E instead of the 5V part.

http://forums.parallax.com/showthread.php?p=640507

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Chris Savage
Parallax Engineering

Jay Kickliter

Is the signal inverted?