Logic levels. which of the 5 pins (listed below) require a shift?. 3 i know for sure, but the other 2, not so sure.
I learned my lesson the hard way, but necessary way to learn about the arduno. without a doubt the 3.3 volt would have been easier with this display.
But now i have invested quite a bit of time to see it through.
the trimpot has lowered the LED voltage to 3.3,
i bought a logic level converter to lower the logic levels from 5 to 3.3V, but i need a bit of help understanding the pins
From what i understand
sck: serial pin- #13: logic needs to change from 5 to 3.3
sda/mosi: serial pin #11: logic needs to change from 5 to 3.3
cs/ss: serial pin #10: logic needs to change from 5 to 3.3
A0: - pro mini pin #9 -- does this need to be shifted using the logic level coverter, is it okay at 5v?
Reset: reset - pro mini pin #10 - same question as A0
do these remaining pins need to be adjusted using a logic level contorller? if the answer is yes, i am just going to buy a new 3.3V Pro mini board rather than buying an 8 channel converter.