my lcd cannot just light

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chal
Posts: 23
Joined: 22 Jan 2012 23:35

my lcd cannot just light

#1 Post by chal » 28 Feb 2012 08:25

hello there i have connected an LCD to pic18f4550 mcu's portd.i have left D0 to D3 floating and my lcd has failed even to show the smallest light.any1 to help me.any problem leaving those data lines floating?
chal

chal
Posts: 23
Joined: 22 Jan 2012 23:35

Re: my lcd cannot just light

#2 Post by chal » 28 Feb 2012 09:46

its now displaying my text but now the back light is still off
chal

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filip
mikroElektronika team
Posts: 11874
Joined: 25 Jan 2008 09:56

Re: my lcd cannot just light

#3 Post by filip » 28 Feb 2012 14:59

Hi,

Please, see page 22 of the EasyPIC7 manual to see proper connection of the Lcd with the backlight :
http://www.mikroe.com/eng/downloads/get ... l_v102.pdf

Regards,
Filip.

chal
Posts: 23
Joined: 22 Jan 2012 23:35

Re: my lcd cannot just light

#4 Post by chal » 09 Mar 2012 19:12

well thanx bt i got it working by connecting positive supply to pin 16 and ground to pin 15 which is the opposite to what the datasheet says
chal

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