GPO on the LCD2041-WB

SilmarilS · Post by **SilmarilS** » Sat Dec 14, 2002 3:57 pm

I have a simple question....

Is the GPO on this unit (20mA) is enought to supply a single green To 3/4 LED... directly

Thanks

Post by **linear** » Sat Dec 14, 2002 4:01 pm

Simple answer: yes.

SilmarilS · Post by **SilmarilS** » Sat Dec 14, 2002 4:18 pm

Simple answer2: Thank You....

It works but I like to have more gpo's...maybe my next MO will have more

Post by **linear** » Sat Dec 14, 2002 11:20 pm

Here's an option: if you run LCDC, check out the parallel port plugin (LPT). It's effectively 8 GPOs for you to control from LCDC if you have a free port.

IF you don't run LCDC, you should.

SilmarilS · Post by **SilmarilS** » Sun Dec 15, 2002 9:49 am

It's start to sound good...

I run LCDC and have a free LPT port.....

my printer is networked on another computer

can you provide me a link or the way to convert the LPT connector into a module to use GPO's....(will be simple leds)
Or the LPT pinout

thanks

Post by **Mat-Moo** » Sun Dec 15, 2002 1:24 pm

I build a led test module this way. http://www.angelfire.com/mb/lalim/images/parallel.htm although the control at the moment for the LPT stuff is not as good as the native GPOs stufff, but I need to do a bit more work on that plugin.

SilmarilS · Post by **SilmarilS** » Mon Dec 16, 2002 8:04 am

next week-end I will try this...very easy...it is all I need....

SilmarilS · Post by **SilmarilS** » Tue Dec 17, 2002 12:29 am

I was wondering if you could use the LPT port as a input one....
like using 4 ports to 4 buttons and the rest as 4 gpo's?

Post by **Mat-Moo** » Tue Dec 17, 2002 1:47 am

With most the MO screens offerinf 25 inputs it's not something I've ever looked at.

SilmarilS · Post by **SilmarilS** » Tue Dec 17, 2002 10:35 am

Ok so I must forget using the LPT port as a input?

Post by **linear** » Tue Dec 17, 2002 10:39 am

Well, he's just saying you'd need to code it yourself.

Examples abound on the web. The smart way would be to write an LCDC plugin, but that's assuming you can deal with Delphi.

SilmarilS · Post by **SilmarilS** » Thu Dec 19, 2002 10:21 am

Yeah I can code it my self but it will take light years to do so

but the only gpo alterative is enough for me.....