i am sorry, this is a really noob question, but still i couldnt find a simple answer to this...
i am trying to read the V-Sync signal of a VGA adapter with my arduino uno, in the first step to sync an LED to the framerate of a camera (using an HDMI to VGA converter). so i checked the V-Sync out of the adapter - I think the sync signal is usually supposed to have 5v, but according to my oscilloscope, this particular cheapo adapter is rather outputting a 2.5-3v peak. So i guess to get the digital port to register the sync correctly, i need to amplify the 3v to 5v, right?
my wild guess is, that i'd use a transistor to do that, correct? or is there a simpler way? the other question is, how do i find the correct transistor for that purpose?
thanks for the patience, t.