Casio CZ/ VZ/ FZ - Pro Series

Hi Fran,

Glad you like it. As an advice, I would suggest using light-colored LEDs 
for better contrast with characters.

Best,

D

On 20/12/2010 11:05, narfman96 wrote:
>
> Dave,
>
> This is awesome!!! I archived your pics so I can apply this to other 
> el-foil displays. I looked real quick online and Radio Shack has 
> rectangular super bright blue leds that would fit in most any display. 
> I probably could bead blast the acrylic at work too.
>
> Thanks so much for sharing this and taking these pics! Fran
>
> --- In CZsynth@yahoogroups.com <mailto:CZsynth%40yahoogroups.com>, 
> David Mochen <davidmochen@...> wrote:
> >
> > Hi group,
> >
> > I've uploaded some pix showing my LCD mod for my CZ1.
> > http://groups.yahoo.com/group/CZsynth/photos/album/1481989801/pic/list
> >
> > Basically, I picked up 5v from pins 1 and 2 of the LCD. Got 4 5mm LEDs
> > and a resistor (55 ohm; I figured the value using an online LED
> > calculator [thanks, fran!]).
> >
> > In order to have the light evenly spread below the LCD glass, I got a
> > small piece of acrylic which I sanded with a fine grain sandpaper so as
> > to be able to fit it under the LCD and also to refract the light. I
> > wanted a colored acrylic, like yellow or green, but only found
> > transparent. I placed a strip of white paper below the acrylic so that
> > light would be reflected upwards. Smooth side of the acrylic went on 
> the
> > bottom side (in contact with the paper) while sanded side faced top
> > (right below the LCD glass).
> >
> > The LEDs are blue (yellow looked good but didn't seem to be strong, 
> so...)
> >
> > Display has a "violeter" hue than in the first pix. In total darkness,
> > it is hard to read the characters if you look from above the keyboard.
> > If you look from a normal playing angle, though, it is readable indeed.
> > I set contrast to the max. If I get tired of blue I will try yellow 
> next
> > time :)
> >
> > There is some light leakage from the LEDs that you can see in the 
> pix. I
> > fixed that later by sealing the space between LCD and plastic 
> chassis in
> > the top panel of the CZ1.
> >
> > Thanks Gordon and Fran for your input and hope you guys like it!
> >
> > Dave
> >
> > On 08/12/2010 08:01, narfman96 wrote:
> > >
> > > Hi Dave,
> > >
> > > My microKORG XL uses little tiny yellow LED's and acrylic so this
> > > should work. Go here to this site for all the details for driving
> > > bright LED's from a power supply voltage ->
> > >
> > > 
> http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=%2Fled_info.htm 
> <http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=%2Fled_info.htm> 
>
> > > 
> <http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=%2Fled_info.htm 
> <http://www.superbrightleds.com/cgi-bin/store/index.cgi?action=DispPage&Page2Disp=%2Fled_info.htm>>
> > >
> > > Don't forget to disconnect the inverter so nothing gets zapped. Some
> > > of them have 400 vac outputs. Let us know how it goes....
> > >
> > > Good luck, Fran
> > > --- In CZsynth@yahoogroups.com <mailto:CZsynth%40yahoogroups.com> 
> <mailto:CZsynth%40yahoogroups.com>,
> > > "davidmochen" <davidmochen@> wrote:
> > > >
> > > > Hi all,
> > > >
> > > > I own a CZ1 with an almost dead EL backlight.
> > > >
> > > > What I would like to know is:
> > > >
> > > > 1) is there any chance to hack the inverter circuit/transformer so
> > > that it could feed a couple LEDs which I plan to place besides the
> > > LCD? (more details on that below). AFAIK the input to the inverter is
> > > VDC, so maybe disabling the transformer and doing some extra stuff
> > > would get the point.
> > > >
> > > > 2) if 1 above is a no-no, where can I get appropriate current from
> > > for driving a couple bright LEDs? I've seen some posts where a brand
> > > new display with built-in LED backlight was retrofitted into
> > > non-backlit models like CZ1000. The on switch was mentioned, but I
> > > also saw that also pins 1 and 2 of the LCD can be used for that. 
> Also,
> > > could I disable the inverter circuit so as to save some power?
> > > >
> > > > My idea is to keep the existing LCD and fit it with a custom
> > > backlight. I've been doing some tests with a tiny rectangular 
> piece of
> > > acrylic sanded on one side so as to diffuse light. I placed it where
> > > the EL foil used to be and lit it with a small LED lantern. Light 
> gets
> > > effectively across it and the LCD gets softly lit so I think if I
> > > placed two strong-enough LEDs at both sides of the acrylic I would 
> get
> > > a nice backlight.
> > > >
> > > > I have only very basic electronics knowledge but am not afraid of
> > > soldering stuff. :)
> > > >
> > > > Thanks very much in advance for any help.
> > > >
> > > > Dave
> > > >
> > >
> > >
> >
> >
> > [Non-text portions of this message have been removed]
> >
>
> 


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