you know I might use that idea for eyes on my bot then have them change colour depending on "mood"

To clarify, the first explanation was as if the glyph is a negative of a printed glyph. So print a glyph, cut out the glyph, stick the white piece of the printed glyph to the plexi. The second option was the opposite, print a glyph, cut it out, stick the black printed glyph to plexi.

Option 1

Imagine the black part is on the plexi in both cases. Option 1 I think would look much neater but it's personal preference.

Obviously with a better glyph and design. Next time I have the other computer on I'll knock up a quick design in photoshop.

I am not sure which would give the sharpest image for the camera. But my guess would be option 1

I WOULD also like a light inside my charger base too,same as i dont like GLYPH on my wall,it looks all in one, i design a special light for my omnibot the same way it changes with mood from angry to happy same idea ion johhny five.

another idea that can work is that sparfun sells bendable light tubes so you can shape them to gylph and have backlighting on the pexiglass so you get dual color design

Paint the plexi and the colour changes Sharpie works too.

I have tried a sharpie for a vision system at work but I found the light bled through anyway. I would use paint or decal. You can use RC car paint its designed for lexan so it'll stick nicely

IT seems the only idea RICH and me finally agree on,lighting using pexiglass ,it was same idea i had and like he said you can use 2 or more colors and even one blinking and go straight green when it fully charged.

there are dual leds red/green perfect for this,i f i do i will add another like backlighting

MY idea would not be for a GLYPH, but for power indicator showing not charged,charging (blinking) steady green meens it ready

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when i do mine i would use a airbrush design,they have printed cutout letter at walmart and other stores you use then and paint over it,simple and easy

I most likely get my sister since she the one that has a art degree and uses photoshop on a MAC

i have very clear acrylic at home ,plus have light tube left and leds,so monday i can make one super simple and post it

it will show a straight line,but it will give a good idea what it looks like ,plus i have special acrylic paint