AVR-Chat

----- Original Message -----

From: arhodes19044

To: AVR-Chat@yahoogroups.com

Sent: Saturday, April 23, 2005 1:50 AM

Subject: [AVR-Chat] New LCD will not work.

Wow, the members here are SO helpful. Especially being patient with a
newbie like me.

Well, the next problem is getting my LCD working. It is a brand new
optrex dmc-61230. I have it hooked up for 4 bit parallel.

I have it all wired up and all the wires are going to where I think
they should, but it is not working. I have triple checked the wires
while looking at the datasheet for the LCD. Power wires are right.
The 4 active data pins (DB4 thru DB7) are hooked to the pins I have
assigned to bits 0-4. RS, RW, E are hooked up aproperly as far as I
can tell. But I get nothing.

When you power up an LCD should it do anything visible without any
connection other than power (+,-) and the "LCD drive" which is
supposed to be in the neighborhood of 1/2 VDD?

I am getting nothing. The backlight does come on....

No lettering or anything. As far as I can tell, the test program
looks like it is running properly, but I am not positive.

I am devoid of further ideas....