ComputerVoltageSources

The backlight is on a separate connector.  I think we can run the 
backlight at very low current.  I am running a 20x2 backlight at 18 
mA, far from the spec of 130+ mA.

As far as voltage feedback and the DAC, the LCD only connect to Tx and 
Reset and both are inputs. I don't see any way for it to feedback +5 
volts.

My personal feeling is that we can make the LCD board low enough 
current that you could feed it off of a 7805 regulator on the main 
PCB.  The AVR is ~5 mA and the LCD logic is 3 mA.  If we can run the 
backlight at <20 mA then the entire LCD board is 28 mA.

Dave  

--- In ComputerVoltageSources@yahoogroups.com, "Grant Richter" 
<grichter@...> wrote:
> For an LCD display board. I sure hope the 200 ma backlight connector
> is on a seperate pad from the main 5 volt so the wires can be run
> seperately. A display module probably doesn't need 15 volts at all.