Optrex DMC2059 LCD

Have you found the "LCD faq" on the net yet?, I had a batch of character displays that were STN type and needed about -1.5V on the contrast to make the characters visible.

Hi Mark

I found a few people asking the same questions but no answers

Thanks for the suggestion

-- Regards

Chopper

(12cm

haven't

It needs a bit of a "power up" routine, have you been through that?

I found a few people asking the same questions but no answers

Thanks for the suggestion

-- Regards

Chopper

(12cm

haven't

Hi Frank

I am using a routine similar to other OPTREX units. Is there anything specific about this type?

-- Regards

Chopper

of

units

The best way I can answer your question, is the LCD controller or driver on this URL below?

I am using a routine similar to other OPTREX units. Is there anything specific about this type?

-- Regards

Chopper

of

units

Hi all

Success. It required about -4V on the contrast pin. (pin3)

Thanks all for your help.

It worked for 2 displays.

All I need now is a convenient -4V

-- Regards

Chopper

(12cm

I was able to suck mine off a MAX232 ic I already had on my board for the RS232 interface: it makes -9V.

Regards Mark

Good thinking.

I also found that it needed about 15V @ 60 mA for the backlighting

-- Regards

Chopper