[Nr7]

The 8-Bit Guy on Youtube made a great video series on character LCD screens and how to run them.

In the first video he shows how to drive one manually using just switches: https://www.youtube.com/watch?v=hZRL8luuPb8

In parts 2 and 3 he shows two ways how to drive them with a C64: https://www.youtube.com/watch?v=vV8FbwobrKY https://www.youtube.com/watch?v=pQk3XgpuaJ4