[Icc-avr] 4-line LCD display

[David Raymond]

We have had significant problems similar to your description caused by
running AC current (actually pulsed DC) in the backlight of the display.
If you are doing the same, try reducing the peak current or otherwise
filtering it.
 

Dave Raymond
Software Engineer
Gale Banks Engineering
Ph (626) 969-9600 x3301
Fx (626) 334-2376 
Visit us on the Web: www.bankspower.com
E-mail: draymond at bankspower.com 

 

________________________________

From: icc-avr-bounces at imagecraft.com
[mailto:icc-avr-bounces at imagecraft.com] On Behalf Of Albert vanVeen
Sent: Sunday, January 27, 2008 5:13 PM
To: Discussion list for ICCAVR and ICCtiny Users. You do NOT
needtosubscribeto icc-announce if you are a member of this.
Subject: [Icc-avr] 4-line LCD display


Occasionally, but too often to ignore we have problems with 4x40 lcd
displays: the borrom 2 lines display 'garbage'. No amount of debugging
and timing experiments have shown up anything so far, and the conclusion
"it must be a hardware problem" is tempting, but why then would always
the bottom half fail, as these 2 halfs are completely identical?
 
Any ideas?
 
Albert.
 


incoming disclaim
	
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