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HD21603 visual basic graphic problem

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jaakko100500

Post subject: HD21603 visual basic graphic problem

Posted: Fri Apr 29, 2005 21:02

Joined: Sun Sep 12, 2004 17:45
Posts: 3

Hello, when i try to write like (an A)

00000
11110
10010
10010
10010
11110
10010
10010

it gives me

000000
111110
100110
100110
100110
111110
100110
100110

ie double the 2nd last line.

This is not the only writecombination, but others give it too. The above is with my own written display drivers, but it does the same with LCDinfo.

Can anyone suggest if some pinout is wrong? I've went trough the pcb with multimeter, can't find anything

Thx in advance.

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Henri

Post subject:

Posted: Wed May 04, 2005 0:16

Joined: Sun May 05, 2002 22:05
Posts: 2063
Location: Lappeenranta, Finland

Maybe some noise in the enable line.

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