On 2014-04-08, [email protected] <[email protected]> wrote: > > Also, as previously mentioned, simply feeding a 3.3V or 5V pps output from a > GPS receiver into a RS232 port will not work as the voltage levels are > different. You will need a simple TTL logic to RS232 converter such as a > MAX232 device to convert the PPS output signal to the correct voltage level. > Actually false form most serial ports these days. While the standard says 5V the actuallity is that 3,3 V will trigger it on almost all serial ports. Ie, in general it is a non-issue. Note that the fact that serial and parallel ports and their interrupts are disappearing from almost all computer is probably a bigger problem.
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