LCD Control

[Jhdgkss]

hi there iam not sure what you mean can you explane

[jcleaver]

when i have a problem with the lcd display
it has been the fact that i use a 20 osc
and what works for me is to change line

define lcd_dataus 50

to

define lcd_dataus 200

it just works for me

[Jhdgkss]

hi there thanks for the reply.

how do you know your lcd is in working order, i have ready that if you just provide power to it you should see black boxes is this true. i tried this and all i get is the backlighting up but no boxes.

[Archangel]

hi there thanks for the reply.

how do you know your lcd is in working order, i have ready that if you just provide power to it you should see black boxes is this true. i tried this and all i get is the backlighting up but no boxes.

Power to LCD - pin 1 ground, pin 2 is 5 volts positive, pin 3 center lug of contrast pot. these are the primary power leads, pin 4 R/s bit, pin 5 R/w and must be as mister_e said ground etc etc . . . now pin 15 Power for LED backlight, pin 16 LED backlight ground. Just because led backlight is on does not mean lcd is powered.