Hi,
I want to connect a GPS Smart antenna SAM LS from u-blox, to the UART of an atmega128 running under 5V.
Unfortunately the GPS runs in 3V and has 3V compatible IOs. I set up a 3V regulator already for the power supply. Can someone explain how to build a level shifter from 3V to 5V with a transistor ? (How do I choose it, how to connect it ?)
any better idea ?
Thanks Martial Chateauvieux