I'm wearing a Newton Digital which is already negative in the default state, and it seems possible to convert it to a regular positive display. Wouldn't look as cool though.
How to Convert a Digital Watch to a Negative Display
31–40 of 51 posts
Re: How to Convert a Digital Watch to a Negative Display
#32I remember doing that to my calculator when I was a teenager. Thought my unique calculator was badass then, hehe.
Nice. I flipped the LCD and added ram to my HP 48G. Reverse RPN! :)
Re: How to Convert a Digital Watch to a Negative Display
#33Earlier quoted context omitted.
> I wonder how practical it would be to make a private display by removing the polarising film from it and then viewing with polarised glasses. It's been done, pretty much how you'd expect: http://www.instructables.com/id/Privacy-monitor-made-from-an...
There are quite a few hacks around but I wondered if there was some reason these aren't more widespread or commercially available. Business idea? You could also make something that filters all light but near infra-red so it could be seen by CCDs (on cameras or phones) but not with the human eye. Or do the reverse and flood the picture with near infra-red to prevent it being photographed.
3M sells this.
Re: How to Convert a Digital Watch to a Negative Display
#34Re: How to Convert a Digital Watch to a Negative Display
#35Earlier quoted context omitted.
An overlay of other polarizing material won't change the polarization unless your transparencies are somehow quarter wave plates? ( http://en.wikipedia.org/wiki/Circular_polarizer#Circular_pol... )
If you have two perpendicular polarizers, no light will pass through both. But, if you insert a polarizer at a 45 degree angle to both of them inbetween, some light will pass through. Am I wrong?
You are exactly right.
Re: How to Convert a Digital Watch to a Negative Display
#36I remember doing that to my calculator when I was a teenager. Thought my unique calculator was badass then, hehe.
Back then I hadn't access to the internet(1997-8?) and I was trying to figure out how this LCD screen thingy was working by dissecting the parts of my Casio clock and I found out about this "miracle" glass that looks just as normal one but inverts the screen colors(=b&w) when put in different position. I have to say, it made me a badass :)
Now-days kids could just look it up in minutes an move on. I am not sure if this is a good thing.
Re: How to Convert a Digital Watch to a Negative Display
#37Anyone know if the "cmoy" behind the howto mentioned in the OP is the same guy (Chu Moy) that designed the CMoy headphone amplifier circuit?
Re: How to Convert a Digital Watch to a Negative Display
#38I remember discovering polarization and how LCDs worked in grade school when my calculator came apart and I accidentally flipped the polarizing film around.
Re: How to Convert a Digital Watch to a Negative Display
#39It is funny and strangely comforting that despite such a wide variety of topics, forum culture is still the same. There is always a large segment of the forum population that derive some level of pride in listing their collection of X in their signature. Here we see posters list their "casios in rotation," on the spyderco it is lists of knives and ubuntu forums it is "rig specs" and version names. The puzzling thing is that--thankfully--this does not seem to happen on mailing lists.
Re: How to Convert a Digital Watch to a Negative Display
#40Phosphor makes watches with E-Ink displays, so you can toggle between white-on-black and black-on-white. I've been happy with mine, which I've had for a couple years now:
http://www.phosphorwatches.com/E-Ink-Digital-Hour-Clock-Watc...