lcd not working

[duncan303]

check contrast......... maybe everything is ok.

is there a datasheet for the lcd?

and is it compatable with picbasic -> check melabs site.

could be flogging a dead horse...


.....

[robertpeach]

there is a supply voltage, checked that with multimeter...

im not getting any contrast change at all. whatever voltage i put through the contrast pin. went from 0 - 5 volts and nothing happens.

[duncan303]

Did you check the datasheet yet?

Does it have a 44780 controller or equivalent.


TTHA

..

[robertpeach]

it didnt say anything about the controller apart from lcd controller lsi.
checked the data sheeet before i came on here :P didnt wanna post till i had exausted all other options really

it seems to be pretty much same setup with 4databits default and 14-16 pins etc..

im gonna try and hook it up to a negative voltage across the variable pin to see if it makes a difference,

just wondering... should i be able to see pulses coming out of any of the databits on my pin? if i just hook it up to a thing that shows me pwm etc...

[robertpeach]

being the idiot i was i realised my defines werent in capitals haha...