Thanks -- I thought that this might be the case.  However, I'm not 
sure how it's wired.  There are three connections -- so is it really 
a potentiometer?  If so, does anyone know what type to use?

Thanks again.

--- In [email protected], Peter O <[EMAIL PROTECTED]> wrote:
>
> With a little research into the HD44780 interface I found that pin 
3 is
> the contrast adjustment.
> see http://home.iae.nl/users/pouweha/lcd/lcd0.shtml#pin_assignment
> 
> The special resistor  with  pin 3 'in the middle' is a variable
> resistor. Just like the volume adjust knob on your radio.
> 
> So this variable resistor is used to adjust the contrast.
> 
> Peter
> 
> RandomOrbit schreef:
> >
> > Reference: http://www.acmesystems.it/?id=8021
> > <http://www.acmesystems.it/?id=8021>
> >
> > Hi. The article is great - I just have one question: I don't 
really
> > understand the diagram for pin 3. It shows the pin in the middle 
of
> > the resistor between pins 1 and 2, and I don't know what this
> > represents. Forgive me, I am new to this.
> >
> > Thanks
> >
> >  
> 
> -- 
> Peter O
> 
> <skype:on4ooo?call>
> 
> Get Thunderbird <http://www.mozilla.org/products/thunderbird/> 
        Firefox
> 2 <http://www.spreadfirefox.com/?q=affiliates&id=0&t=213>     Use
> OpenOffice.org <http://www.openoffice.org>
>


Reply via email to