Lcd connection

[leonidus]

Hello Guys!!!
I am using a 2*16 lcd module. My college sir told me that instead of connecting Vcc to pin no.2(Vcc) of lcd & using a pot between Vcc & gnd connecting its var. pin to pin no. 3(Vee) of lcd, connect directly Vcc to Vee of lcd & leave pin no. 2 of lcd open. He says, by these connections lcd will work fine. Is it correct?

 

[ericgibbs]

Hello Guys!!!
I am using a 2*16 lcd module. My college sir told me that instead of connecting Vcc to pin no.2(Vcc) of lcd & using a pot between Vcc & gnd connecting its var. pin to pin no. 3(Vee) of lcd, connect directly Vcc to Vee of lcd & leave pin no. 2 of lcd open. He says, by these connections lcd will work fine. Is it correct?

hi,
Some LCD's work with Vcontrast pin at 0V, but I would recommend a 10K pot from +5V to 0V with the wiper to Vcontrast.
This way you can set the optimum contrast for the LCD

 

[ziedan]

yes it is correct
you can leave pin2 and connect Vcc to VEE
you can see it in the attached simulation file

 

[leonidus]

Thank U Very Much Guys!!!
Ziedan which simulation software have u used? Is it available for free download?

 

[ericgibbs]

yes it is correct
you can leave pin2 and connect Vcc to VEE
you can see it in the attached simulation file

hi,
You should not assume that a real LCD will function the same way as a simulated LCD.

Vee should be connected as per the datasheet.

This LCD help pdf will show the LCDconnections.

 

[Mr RB]

MOST char LCD need fine tweaking of the Vo (Vee) voltage so they can be seen and look good.

Your college sir needs to do some more homework...

 

[rajbex]

Check how I have connected LCD with PIC16F628A microcontroller.
Experiments with PIC16F628A
Thanks.

 

[ziedan]

i'm using proteus
and it is free to download and then crack it

 

[leonidus]

Thank U Everybody!!!

 

[leonidus]

Hello Again!!!
I am using EAGLE for creating the layout. But, there are many overlaps in lcd connections when I connected lcd in standard fashion i.e. P0(0-7) to D(0-7) of lcd & P2(5,6,7) to RS,R/W,EN resp.. Instead if I connect P2(7-0) to D(0-7) & other 3 to P0 pins will it work fine?
While writing program I will take care that P2.7 to P2.0 are D0 to D7 respectively.
Latter one simplifies the problem.
Please help.

 

[csaba911]

i'm using proteus
and it is free to download and then crack it

You are must be very SMART