Hi!I had a similar question a couple of days ago how to convert a 2.65v signal to 5v with transistors.I ended up using 2*NPN transistors and it worked fine (serial communication)
Just wondering though, but why is R6 necessary? Why not simply just use R5 and increase the ohms?
The unidirectional output diagram olof_n showed seems to work fine but it revolves around a 3.3v source - mine is 1.8v. The transistor I'm using is the 2222A. What do I need to change to make it accept the 1.8v source?
I tried removing the resistor between the odroid TX and the T1 base, but it didn't seem to make a difference.