I have got my hd44780 display to work, but still need help

On the pictures above i forgot to input a rotary potentiometer at pin 3 of lcd. It is used to adjust contrast. 1KΩ will do the work i guess, still i am working with one 9.9KΩ.

A full guide from @szalay and @Oscillation_Station at (1st and 24rth post at that thread)

and