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PostPosted: Fri May 29, 2009 22:03 
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Joined: Wed Aug 03, 2005 20:27
Posts: 130
Location: .fi
Got some cheap 320xRGBx240 controllerless STN displays made by Kyocera.

Added two 74hc590 logic chips, old reflashed EEPROM used for PC BIOS, and 20MHz PIC16F627.

After a minor setback (some vital smoke escaped, thanks to Henry for helping here a bit), the result:

Image

Image

In the first pic there's only one frame being fed from the EEPROM. In the second pic there are two frames being switched to create a crude form of intermediate shades. :wink:


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PostPosted: Wed Jun 03, 2009 23:44 
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Joined: Wed Aug 03, 2005 20:27
Posts: 130
Location: .fi
Few long evenings of reworking with the wiring. Controller and EEPROM writer side by side on the same board.

Image


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PostPosted: Sat Jun 06, 2009 17:56 
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Joined: Sun May 05, 2002 22:05
Posts: 2063
Location: Lappeenranta, Finland
Nice work with a PIC16F627 :)


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PostPosted: Sun Jun 21, 2009 20:27 
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Joined: Mon Aug 02, 2004 12:18
Posts: 16
Location: lisboa
Hi, nice work!!! r you going to post schematic and code? becose i have 640xRGBx240 controllerless lcd for some time and i haven't found a fast circuit that could drive the lcd fast enouth.


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PostPosted: Sat Jun 27, 2009 1:44 
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Joined: Wed Aug 03, 2005 20:27
Posts: 130
Location: .fi
I don't really have any schematics as I just stared some datasheets for a while and then wired everything up from that. But it's quite simple because the display itself has a voltage generation built in so I just had to take care of the clocks and displaydata.

And the code is also pretty much nothing more than creating the clocks and counter to switch between frames.

I'll post something when I have time to draw the schematics.

Image


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