Hi all,

Some time back I ran across a link (in this forum) to bench test a LCD character display. Now I'm unable to find the link. Can someone point me in the right direction?

I have a OPTREX 4x20 display that I am trying to use with a 16f877 and PICBASIC PRO. It doesn't flicker, blink, roll over... nuttin! No characters, no black squares. It acts dead.

I have been able to get a 2x16 working just fine.

If I could make this thing give me a couple of black squares I'd be happy right now. That at least would tell me it's doing something and encourage me to play more with code to get things working right! But I don't know if it even works (purchased new).

There was a link some time back that showed how to bench test these displays. Any help would be appreciated.

Thanks all,

Ross