Add to bluetooth connection Serial connection to communicate with GPS.

And to make you laugh: could you (also) make nightmode in mirrorview, so that when the Palm is laying on your dashboard, you will see it properly reflected in the windscreen?

The white background will propably be too bright during nighttime.

I know that it can adjusted, but..

Did you consider nightmode (red numerals on a black background)?

The screen has space enough for larger numerals, so that they can be seen from the corner of your eye.

After a couple of minutes the Palm powers down. Loosing the BT connection.

Slowing from 100 to 98 km/h  shows 198 in the display.

And the one will not go away.

At the moment there are three ranges to be set in your program.

In Holland we have five common speed limits: 50, 70, 80, 100 and 120 km/h.

Are you willing to implement five ranges in your program?

GPS log:

$GPGGA,161140.271,5217.7941,N,00455.3965,E,1,03,25.0,37.7,M,47.0,M,0.0,0000*76 $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,25.0,20.0*08 $GPRMC,161140.271,A,5217.7941,N,00455.3965,E,0.00,,160708,,*15 $GPGGA,161141.271,5217.7928,N,00455.4101,E,1,03,25.0,37.7,M,47.0,M,0.0,0000*75 $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,25.0,20.0*08 $GPRMC,161141.271,A,5217.7928,N,00455.4101,E,0.00,,160708,,*16 $GPGGA,161142.271,5217.7945,N,00455.3942,E,1,03,25.0,37.7,M,47.0,M,0.0,0000*75 $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,25.0,20.0*08 $GPRMC,161142.271,A,5217.7945,N,00455.3942,E,0.00,,160708,,*16 $GPGGA,161143.271,5217.7943,N,00455.3929,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*77 $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,24.9,20.0*00 $GPRMC,161143.271,A,5217.7943,N,00455.3929,E,0.00,,160708,,*1C $GPGGA,161144.271,5217.7912,N,00455.4059,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7D $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,24.9,20.0*00 $GPGSV,2,1,07,05,77,265,00,14,50,261,00,09,49,131,31,04,19,076,37*70 $GPGSV,2,2,07,24,18,087,00,02,15,110,36,01,11,326,00*4B $GPRMC,161144.271,A,5217.7912,N,00455.4059,E,0.00,,160708,,*16 $GPGGA,161145.271,5217.7940,N,00455.3981,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*70 $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,24.9,20.0*00 $GPRMC,161145.271,A,5217.7940,N,00455.3981,E,0.00,,160708,,*1B $GPGGA,161146.271,5217.7932,N,00455.4099,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*71 $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,24.9,20.0*00 $GPRMC,161146.271,A,5217.7932,N,00455.4099,E,0.00,,160708,,*1A $GPGGA,161147.270,5217.7959,N,00455.3996,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7D $GPGSA,A,2,09,02,04,,,,,,,,,,32.0,24.9,20.0*00 $GPRMC,161147.270,A,5217.7959,N,00455.3996,E,0.00,,160708,,*16 $GPGGA,161148.270,5217.7953,N,00455.4013,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7B $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPRMC,161148.270,A,5217.7953,N,00455.4013,E,0.00,,160708,,*10 $GPGGA,161149.270,5217.7931,N,00455.4085,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*71 $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPGSV,2,1,07,05,77,265,00,14,50,261,00,09,49,131,30,04,19,076,37*71 $GPGSV,2,2,07,24,18,087,00,02,15,110,36,01,11,326,00*4B $GPRMC,161149.270,A,5217.7931,N,00455.4085,E,0.00,,160708,,*1A $GPGGA,161150.270,5217.7941,N,00455.3911,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7D $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPRMC,161150.270,A,5217.7941,N,00455.3911,E,0.00,,160708,,*16 $GPGGA,161151.270,5217.7939,N,00455.3855,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*72 $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPRMC,161151.270,A,5217.7939,N,00455.3855,E,0.00,,160708,,*19 $GPGGA,161152.270,5217.7957,N,00455.3921,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7B $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPRMC,161152.270,A,5217.7957,N,00455.3921,E,0.00,,160708,,*10 $GPGGA,161153.270,5217.7941,N,00455.3854,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7E $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPRMC,161153.270,A,5217.7941,N,00455.3854,E,0.00,,160708,,*15 $GPGGA,161154.270,5217.7952,N,00455.3906,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7D $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPGSV,2,1,07,05,77,265,00,14,50,261,00,09,49,131,30,04,19,076,37*71 $GPGSV,2,2,07,24,18,087,00,02,15,110,37,01,11,326,00*4A $GPRMC,161154.270,A,5217.7952,N,00455.3906,E,0.00,,160708,,*16 $GPGGA,161155.270,5217.7954,N,00455.3877,E,1,03,24.9,37.7,M,47.0,M,0.0,0000*7D $GPGSA,A,2,09,02,04,,,,,,,,,,31.9,24.9,20.0*0A $GPRMC,161155.270,A,5217.7954,N,00455.3877,E,0.00,,160708,,*16

Text field for speed limits setting have not scrollbar.