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 Forum index » Off-Topic Area » Programming
Connect LCD character display to parallel port
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Robotop


Joined: 08 Dec 2009
Posts: 34
Location: Italy

PostPosted: Thu 04 Feb 2010, 12:19    Post_subject:  Connect LCD character display to parallel port
Sub_title: Use Gambas2 and Puppy Linux for LCD character control
 

Hello, I'm here again with my second application with Puppy Linux and Gambas2 visual Basic environment. The program was developed on PC Engines Alix-1D motherboard (very low power consumption); this small application is freely available for download on my website http://ficara.altervista.org/linux_free.php#lcd20x4 in form of full working folder, with sources, for the Gambas2 environment. It's a basic implementation, but the source is very simple and can be easily expanded. It will be nice if you leave a reference to my work in your application if use the sources for your own projects. Hope this will be interesting for someone, bye Very Happy
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Aitch


Joined: 04 Apr 2007
Posts: 6825
Location: Chatham, Kent, UK

PostPosted: Wed 17 Feb 2010, 18:44    Post_subject:  

Hi

Interesting project again.....

I've just started messing with an EPIA board, as I need a low power setup, but I'm still struggling with getting a low power monitor

I've heard it possible to adapt a laptop screen & use LEDs for backlight

Have you any tips?

Thanks

Have linked this to another thread, here

http://www.murga-linux.com/puppy/viewtopic.php?p=392800#392800

Have you seen TurboPup extreme?

http://www.murga-linux.com/puppy/viewtopic.php?t=40477

Aitch Smile
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Robotop


Joined: 08 Dec 2009
Posts: 34
Location: Italy

PostPosted: Thu 18 Feb 2010, 19:01    Post_subject:  

hello, I know the EPIA boards, but the ALIX has MUCH less power consumption. You can supply the whole board with a single 12V mains adapter. The necessary supply voltages are generated on-board with very efficient switching circuits. The board can drive an LCD directly (with on-board connector) but actually I don't know how to realize this connection Crying or Very sad . In my applications I use the normal VGA output. The backlight of LCD displays can be substituted by white leds, so the CF lamps and the inverter can be removed. I've seen some project on the internet with such argument. In the near future I will add to my site other applications using the parallel port under puppy linux on Alix board. My target is to make the "Puppy Mobile", a moving, smart device with image capturing and internet control. Step-by-step, easy to reproduce by all puppy lovers. I discovered Puppy just a month ago, but is FANTASTIC for embedded applications, so... GO ON.
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