MOD-RS485-ISO or MOD-RS485 logic levels

[dxmann]

Hello!
I would ask which are the voltage levels of the RS232 port: i nee to connect its pin to 3.3v digital ports.
Thank you!
here are the modules:
https://www.olimex.com/Products/Modules/Interface/MOD-RS485-ISO/
https://www.olimex.com/Products/Modules/Interface/MOD-RS485/

[LubOlimex]

Hello dxmann,

It's 3.3V and it is located on the UEXT. More info on UEXT: http://en.wikipedia.org/wiki/UEXT.

Best regards,
Lub/OLIMEX