2lcds to one pic - is it possible ?

[newbie111]

2lcds to one pic

hi folks

i read something on this site







and connected 2 16x2 lcds to one 16f690
with 2 buttons like in the diagram

it worked on proteus

i do not know if it is workable in a real circuit


Any ideas?

Thanks a lot in advance

Link:

https://www.picbasic.co.uk/forum/archive/index.php/t-626.html

circuit:


**broken link removed**

 

[wp100]

Re: 2lcds to one pic

Hi,

Don't see why not, used as is, it will display the same message on both screens.

If you modified the code, so each lcds E line had its own dedicated pic pin you could then output different messges to each screen.

 

[GrandAlf]

2lcds to one pic

So long as R/W is held low so that you are only writing to the display and not reading, it should not be a problem, you could have several displays depending on the drive capability of your source. As wp100 says controlling each Enable with a separate pin, would mean that you could decide which or all would display.

 

[possible.vishnu]

lcd with pic 16f877a

hey guys do ull have any working code
for 16*2 lcd interfacing with pic 16f877a
plz its urgent

 

[newbie111]

Re: 2lcds to one pic

Thank you all

I finished everything

it worked well



Added after 8 minutes:

possible.vishnu,

I do not know which compiler you are using

i suggest you download mickro basic or c compilers

there are good examples in the " help section"

for a 16x2 lcd , all u have to do is to get to know
how to set pins to digital ( refer to your datasheet if you have no idea how)

anyway the examples will help you
with ease

cheers

 

[GrandAlf]

2lcds to one pic

If you are thinking of using CCS compiler, check out their forum and search for flex_lcd, there are a few for different types of display. Even if you are using a different compiler, they should be fairly easy to modify.