[LinuxPPS] Using GPS for automotive applications

[Udo van den Heuvel]

Neal Probert wrote:
> PPS Interface
> -------------
> The simplest way I can see interfacing the PPS is through a MAX232 chip 
> into the serial port's DCD input.  Right?

In some cases (maybe even most modern cases) you can feed the (TTL?) PPS
into the RS232 DCD pin without trouble. I am using this setup without
problems.

Depending on the board you maybe can jumper the RS232 port to 5V
operation, as on some of my Epia boards.

A max232 convertor costs a few ns of delay.