Hello,
I bought several MOD_GPS modules from Olimex from the Polish TME distributor.
Module can be powered from 2.7V to 5V.
But there no information about voltage level of TxD and RxD lines.
The measured voltages on these lines are 3.3V.
RxD with Pull-Up to 3.3V?
I need to known if the RxD line is 5V tollerand.
I sent e-mail to support@olimex.com but any respond.
I make a topic on Olimex Support Forum but also any respond.
I tried conntact via Facebook but they redirect me to suppot@olimex.com
So I have vicious circle

Fatal level of technical documentation and support.
Maybe someone will help me get information about interface voltage level.
Regards,
up8051 aka JarekC.DIY