4 x 40 lcd possible?

MIDIbox SEQ
1

Hi all..

Is it possible to use a single 4x40 lcd insted of two 2x40 lcds for MBSEQ v.3?

..//Mattias

2

It’ll chop up the menus, but if that doesn’t bother you…

FWIW the hd44780 spec doesn’t allow for displays that big, they’re handled as two 4x20’s, IIRC, or two 2x40’s, if I don’t :wink:

Edit: I don’t RC at all :wink: a 4x40 works like two 2x40’s stacked atop one another. See my next post.

3

So you recomend two 2x40 then? Is the other doable or is there serius coding required?

I have got limited surface on my box so if I use two lcd:s i have to stack them, I cant fit them side by side. Any ideas?

..//Mattias

4

TK recommends two 2x40’s yeh. According to the doc I always refer to a 4x40 will interface in pretty much the exact same way. I should have remembered that I’m using FF now and I can search my bookmarks :slight_smile: I’ve edited my last post.

In short: Yes, it’ll work, No coding req’d… But it might look funny. Check out TK’s Screenshots page for an idea of what will get broken up.

5

The chopping of menus is not a big deal. They will be cut in the same place as with two 2x40:s. But I cant find any info on what pin E2 shulod be conected to on the CORE?

I am also planing to use encoders with “buttons” insted of the 16 step buttons. If it´s not a bad idea? ???

6

Hi

But I cant find any info on what pin E2 shulod be conected to on the CORE?

It´s connected where the enable line of the 2nd 2x40 would be connected.

Moebius

7

Hi

It´s connected where the enable line of the 2nd 2x40 would be connected.

Moebius

I figured but what pin is it?

..//Mattias

8

Would that be (pin C.4, J10:RC) as said in the http://www.ucapps.de/mbhp_lcd.html MBHP LCD Module page?

Moebius