What is a sure fire way of testing that your LCD module is at least
functioning with out using any code?

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On Tue, 5 Jan 1999, Peter L. Peres wrote:

> Hello,
>
> I think that I know your problem:
>
> > The Contrast pin gives a readout of 5.0V, the same as Vdd. However, There
> > is a 10k pot connected between +5V and the Vee contrast pin of the LCD. Pot
> > is in the middle, at about 5k (i checked it).
> > LCD type: DV-16244
> > 16x2, with LED background.
> > 14 pins data/control/power connector.
> >
> > I really don't understand.
> > Thanxzz, Steve!
>
> LCDs are notorious for giving max. contrast with minimum voltage on Vlc.
> Don't ask, been there ;( Connect the pot between +Vdd and GND and the
> cursor to Vlc and park the cursor on the GND side, then try again. It took
> me 2 weeks once upon a time and I'll remember it. We all start
> somewhere...
>
> hope this helps,
>
> Peter
>