GPS Module USGlobalSat EM-408

[Grant Fleming]

Looking to obtain one of these little darlings in Australia (or NZ).
www.sparkfun.com/commerce/advanced_search_result.php?keywords=GPS-08234&search_section=products&x=14&y=8

I have searched on-line in the stores for Sparkfun distributors and other stores in Oz but with no luck. Only located the item in US and UK so far. Obviously am trying to avoid the frightening freight costs!
I have all the code written already for a PICAXE 28X1 and tested in the simulator to parse data and display sertxd on PC. Just need the real thing now.

 

[hippy]

Obviously am trying to avoid the frightening freight costs!

Sparkfun shows a $3.40 USD option for Australia which is $4.64 AUD / £2.28 GBP - Just how cheap do you want it ???

 

[testerrrs]

Are you using the NMEA 0183 output from the GPS?

Any chance you could post the PICAXE code for me?

Cheers

 

[MPep]

@geforce,

What do you want to know??

 

[testerrrs]

The PICAXE code for parsing NMEA sentences and then extracting useful data from them.

We're looking at using a PICAXE on the next high altitude balloon, and we need to get the PICAXE to listen to the NMEA GPS output and extract the coordinates, altitude, etc from it.

I was just wondering how you were going about doing it.

Cheers,
*j

 

[MPep]

An example to extract time from the ZDA sentence

GPS_IN:
'b0's are ignored/not required!

'Date & Time

    serin GpinI,Gbd,("GPZDA,"),b1,b2,b3,b4,b5,b6,b0,b7,b8,b0,b9,b10,b0,b0,b0,b11,b12
    poke $50,b1
    poke $51,b2
    poke $52,b3
    poke $53,b4
    poke $54,b5
    poke $55,b6    
    poke $6E,b7
    poke $6F,b8
    poke $70,b9
    poke $71,b10
    poke $72,b11
    poke $73,b12

Does this help? I use multiple b0 entries to skip over data (like commas) that are not required.