I have a RADDS controller with a RADDS display 20x4 arduino due R3 (printer 3d)
after few writes on arduino due on display begin show me only strange chars
on radds is an ttl logic converter I think HCT365 2L5E401 wich is between my arduino due and display
I'm not sure if that cip is broken, or display
strange is i see on display chars like &, % 2 and numbers on fist row some lines flashing ...
on the other side i think some library is taken wrong on compiling firmware arduino is updated on latest versions also libraries
any suggestion ?