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Posted: Tue Mar 12, 2002 5:21 pm
by LiqTenExp
Hi,
I am new to LCD's being used with computers to display data. If i had a program like LCDC and wanted to be able to use back forward stop and play, and a power button (5 buttons total) near the display to control it instead of a keypad. I was wondering if that is possible. I was looking to get a 20x4 MO backlit LCD display.
Thanks
Posted: Tue Mar 12, 2002 5:55 pm
by Henry
Yes, as long as the button shorts out two lines it's all good.
Posted: Tue Mar 12, 2002 10:38 pm
by LiqTenExp
What do you mean by shorting out two lines? Two connections on the keypad connection? For example the 20x4 LCD from MO?
Posted: Wed Mar 13, 2002 1:47 am
by Whoosh
Hi there,
Check the manual for the display. It's pretty well documented. The keypad connector is setup as a matrix with rows and columns.
So, what you want to do is connect a row and a column pin with a momentary-style button which connects the 2 when it's pressed.
Cheers, Whoosh
Posted: Wed Mar 13, 2002 9:04 am
by Atarien
this what i did in my project :
http://www.jackypc.com/articles/146/global.jpg
the online documenation has been very useful
Posted: Wed Mar 13, 2002 11:42 am
by babber
I have made an external remote which uses 8 switches. I have a simple diagram that explain how to connect switches in rows and columns. See
http://mysite.freeserve.com/winamp_remote/switch.htm
Cheers
Babber
Posted: Sat May 18, 2002 2:06 pm
by ijoat
babber: THANK YOU so much for the link to your website explaining the button wire diagram. I'm new to LCDs and have been racking my brain trying to understand the buttons actually work. I've seen several desciptions and diagrams but none of them made sense until I looked at yours. I feel like a "born again". :-)
Thanks dude!