2nd Aug 2005, 17:38
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#1 |
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What's a Dremel?
Join Date: Jul 2004
Location: englind
Posts: 14
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lcd HD44780 controling brightnes and contrast how?
I got a lcd HD44780 20x4 display but no software as of yet can enable me to change the brightness/contrast as its way too bright.
If I powered it via a fan controler bus would this damage it?
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Abit AN7 , XP2800+ at 2400mhz, 120gig HD, 1gig PC3200 memory, Audigy Platinum, ATI 9800XT, WC with Danger Den TDX, DD M4 chip set , DD M4 GPU using liquid XP+ with dual heatcore + shrowd. 
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2nd Aug 2005, 17:48
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#2 |
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Electromodder
Join Date: Nov 2002
Location: Cambridge, UK
Posts: 3,045
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What are you currently using to limit current to the backlight?
Fan controllers are usually for 12V fans, so you'd need to adjust your current limiting resistor to set the maximum current to ~300mA when connected to 12V. Once you've done that then yes you could use your fan controller to control the backlight (not the LCD power though!) |
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2nd Aug 2005, 18:02
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#3 |
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Multimodder
Join Date: Mar 2005
Posts: 232
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see the wiring diagram on LCD smartie, thats what i used, jsut put a 10k variable resistor in the circuit
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2nd Aug 2005, 19:33
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#4 |
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What's a Dremel?
Join Date: Jul 2004
Location: englind
Posts: 14
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so you cant do it with software then?
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Abit AN7 , XP2800+ at 2400mhz, 120gig HD, 1gig PC3200 memory, Audigy Platinum, ATI 9800XT, WC with Danger Den TDX, DD M4 chip set , DD M4 GPU using liquid XP+ with dual heatcore + shrowd.
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2nd Aug 2005, 19:36
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#5 |
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Multimodder
Join Date: Mar 2005
Posts: 232
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nope dont think so
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2nd Aug 2005, 19:38
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#6 |
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Miffed
Join Date: Apr 2003
Location: Amsterdam, Da Netherlands
Posts: 1,382
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Standard HD44780 wiring scheme has variable resistor (potmeters) for adjusting brightness and contrast. Also some apps can do software brightness control, i believe (not sure) LCDHype, Smartie or another one....
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MK3 | L | D300 |
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2nd Aug 2005, 20:10
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#7 |
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What's a Dremel?
Join Date: Jul 2004
Location: englind
Posts: 14
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LCDhype looks like it may controll contrast but the manual is not english and cant for the hell of me work out what to do with it?
__________________
Abit AN7 , XP2800+ at 2400mhz, 120gig HD, 1gig PC3200 memory, Audigy Platinum, ATI 9800XT, WC with Danger Den TDX, DD M4 chip set , DD M4 GPU using liquid XP+ with dual heatcore + shrowd.
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2nd Aug 2005, 20:20
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#8 | |
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What's a Dremel?
Join Date: Jul 2004
Location: englind
Posts: 14
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Quote:
Would you be so kind you direct me to this diagram that shows what I need to mod to add pots the enable contrast and brightness?
__________________
Abit AN7 , XP2800+ at 2400mhz, 120gig HD, 1gig PC3200 memory, Audigy Platinum, ATI 9800XT, WC with Danger Den TDX, DD M4 chip set , DD M4 GPU using liquid XP+ with dual heatcore + shrowd.
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29th Jan 2009, 19:55
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#9 | |
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What's a Dremel?
Join Date: Jan 2009
Posts: 2
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Quote:
I am new …….. The Schemetic for the LED clock I made today is not visible. I am unbale to complete the project. Can you please help to get the complete information Thanks. |
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29th Jan 2009, 19:58
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#10 |
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What's a Dremel?
Join Date: Jan 2009
Posts: 2
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Sir SSteveyGteveyG
I am new …….. The Schemetic for the LED clock I made today is not visible. I am unbale to complete the project. Can you please help to get the complete information Thanks. |
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