The MAX3223 chip does exactly what you need. It converts 3.3 volt serial to RS232 levels.
You can buy just the chip and add a few passives to a perf board and make what you need or buy a little PCB with the parts already soldered down like this http://www.ebay.com/itm/RS232-To-TTL-Converter-Module-Serial-Module-DB9-Connector... <http://www.ebay.com/itm/RS232-To-TTL-Converter-Module-Serial-Module-DB9-Connector-3-3V-5-5V-Arduino-/172283748577?hash=item281ce960e1:g:Zq0AAOSwx2dYCwXH> It is actually cheaper to buy the little PCB then to buy the parts to make one On Tue, Nov 8, 2016 at 7:23 PM, STR . <stry...@hotmail.com> wrote: > >The signals on the DB9 connector are at RS232 levels, your GPS module is > likely 3V3 CMOS, you will need to make a level translator if you wish to > use a standard PC >RS232 serial port. > > Would this do the trick? - http://www.banggood.com/8-Channel-Logic-Level- > Translator-Converter-Bi-Directional-Module-p-1023173.html > I'll get some 3.3 and 5 V power supplies too. > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/ > mailman/listinfo/time-nuts > and follow the instructions there. > -- Chris Albertson Redondo Beach, California _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.