turn-off lcd and turn-on again

[mehmetOzdemir]

thanks for your idea.

i tried to switch both sides of the power supply.

still , power consumption is same.

[Ioannis]

1. Switch only the + supply. NOT the GND. Also note that if you do not have Backlight then you can omit the transistor and power the LCD directly from a PIC pin.

2. Put all lines from PIC to LCD at 0 level. If they are at 1 then these lines power the LCD.

Ioannis

[Acetronics2]

Hi, Mehmet

In the Manual, LCDOUT Command Chapter, first page ...

You can find:

... if it's powered down and then powered back ....

ADD:

FLAGS = 0


The next LCDOUT Command found will re-initialise the LCD ...

That's all you have to do ...

Alain

[Ioannis]

Hi Alain.

Thats the second he has to do :-)

First he has to turn it off.

Ioannis

[mehmetOzdemir]

hi alain and ioannis.

i switched vcc of lcd and made the other pins zero.when pic waked up i added flags = 0

and now working fine.

thanks for your response

[Acetronics2]

Hi Alain.

Thats the second he has to do :-)

First he has to turn it off.

Ioannis

Hi, Ioannis

You're perfectly right on this point ... LOL !!!

Just need a PIC pin to drive a P Mosfet in the LCD Supply line ... eh !

I use a FQU11P06 ( I Pak case ) from Fairchild for my Lawn tractor onboard computer LCD ( The TRACTEUR program ... )

Note a BS250 should fit if using one of the lasts " Blue " displays ( Backlight current draw has been significantly reduced since old " green " displays ...

Alain