16F872 and LCD

[Fredrick]

I will try that..

Btw how do i do if i want to messure both positive and negative temperature?

[skimask]

I will try that..

Btw how do i do if i want to messure both positive and negative temperature?

Do a search, bunch of code examples here on how to do that.

[Fredrick]

A 10Kohms resistor i serie with the enable wire and the code works as normal... strange???

[Pic_User]

Hi Fredrick,

Double check that your LCD ground is connected to the PIC Vss (5V common) securely.
Check that your LCD Plus is connected to the PIC Vdd (5V plus).
Also check resistor pullup on PIC MCLR to Vdd. as Skimask suggested.

-Adam-

[Fredrick]

Hi Fredrick,

Double check that your LCD ground is connected to the PIC Vss (5V common) securely.
Check that your LCD Plus is connected to the PIC Vdd (5V plus).
Also check resistor pullup on PIC MCLR to Vdd. as Skimask suggested.

-Adam-

MCLR pull up is ok.

The LCD is connected to the same voltage regulator as the PIC but not directly connected to the VDD or VSS PIC pin.

The LCD is connected to this DEV board.
http://www.olimex.com/dev/pic-p28.html

[Pic_User]

The LCD is connected to the same voltage regulator as the PIC but not directly connected to the VDD or VSS PIC pin.

Same supply as PIC is good.

Does the LCD have a LED back light? The development board voltage regulator (VR) has no heat sink.

[Fredrick]

The LCD does not have a backlight becouse it´s an (HD44780) OLED
For 2 years or so i use the same OLED whit an 16F84 and the same code to and then i worked

No it has not an heat sink, but it is capable of 1.5 A whitout an heat sink and that is more then i need.

http://www.fractronics.com/oled1_b.jpg