2 2x16 lcd ?how?

Master1280 · Post by **Master1280** » May 11th, 2009, 5:38 am

So y have 2 lcd 2x16
how do i make to this work in serial mode
like 4x16

or parallel

i tink using the same wire for the 2 lcds
but one with a change on one data pin.

Im studing electronic engineering,
there`s no problem if a circuit needed.

Post by **caesar** » May 14th, 2009, 9:20 am

It's simple for parallel.

Connect both displays according to the 4x40 schematics, just make sure to connect the first display E line to pin 1 on parallel port and second display E line to pin 17 on parallel port.
Set smartie for 4x40 and you are good to go.

Master1280 · Post by **Master1280** » May 20th, 2009, 2:47 am

i tried that long time ago

connect two 4x20 in the parellel port
but doesnt work, the data isnt display correct

but the 2 modules works...

now i want try connect two 2x16 displays on the
same parallel port, also connect them using a ftdi converter

two using one interface

like this

2x16
2x16

ravenmask · Post by **ravenmask** » July 4th, 2009, 1:52 pm

I got two 2X16 LCD(HD44780) as well and was thinking of doing what Master1280 is doing, but haven't got a clue

been googling this and haven't found anything.
Will try to wire LCDs as caesar said when I get around to it

(need to buy parts lol) and see what happens.