GPS MODULE NOT READING

[electricallov]

my gps modem is not showing latitude and longitude coordinates (GPGGA sentence). Its output seen from hyperterminal is as beow:

 

$GPGGA,235954.030,0000.0000,N,00000.0000,E,0,00,,0.0,M,0.0,M,,0000*4C

$GPRMC,235954.030,V,0000.0000,N,00000.0000,E,,,270908,,,N*7D

$GPVTG,,T,,M,,N,,K,N*2C

$GPGGA,235955.041,0000.0000,N,00000.0000,E,0,00,,0.0,M,0.0,M,,0000*4B

$GPRMC,235955.041,V,0000.0000,N,00000.0000,E,,,270908,,,N*7A

$GPVTG,,T,,M,,N,,K,N*2C

$GPGGA,235956.030,0000.0000,N,00000.0000,E,0,00,,0.0,M,0.0,M,,0000*4E

$GPGSA,A,1,,,,,,,,,,,,,,,*1E

$GPGSV,3,1,12,20,00,000,,10,00,000,,31,00,000,,27,00,000,*7C

$GPGSV,3,2,12,19,00,000,,29,00,000,,04,00,000,,11,00,000,*7C

$GPGSV,3,3,12,16,00,000,,28,00,000,,26,00,000,,15,00,000,*77

$GPRMC,235956.030,V,0000.0000,N,00000.0000,E,,,270908,,,N*7F

$GPVTG,,T,,M,,N,,K,N*2C

$GPGGA,235957.030,0000.0000,N,00000.0000,E,0,00,,0.0,M,0.0,M,,0000*4F

$GPRMC,235957.030,V,0000.0000,N,00000.0000,E,,,270908,,,N*7E

 

I am trying this for two days, i am not getting position coordinates. What could be the reason? Please help…

 

[AJISH ALFRED]

Hi,

Most probably your gps module can’t see any satellites. Go to the datasheet and find which is the ‘no. of satellites’ among the data. Now observe what value appears at that particular position of the data which you view on the hyperterminal.

[doraemon]

$GPGGA,235954.030,0000.0000,N,00000.0000,E,0,00 ( Number of satallite visible) ,,0.0,M,0.0,M,,0000*4C   From this it is clear that no of visible satallite is 0. so try to get minimum three satallite to find location go in open space and try if satallite not found you have to use external antenna.

[karthikeyan]

Dear electricallov,

 

Can u pls post the circuit to connect GPS to Serial port/USB

[Author]

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