Rainbow
Hardware
display hacks
SHOW HN2020
How HN took it
2 positive, 12 neutral or asking, 0 mixed, 3 critical, out of 17 comments about the project. Thread score -0.06.
Idea: 1 for, 1 againstExecution: 0 for, 1 againstPerformance: 0 for, 1 againstDesign: 1 for, 0 against
The thread, comment by comment
Each row is a top-level comment and its replies, in HN's order. Select a cell to open that comment on HN.
positive neutral or mixed critical about another commenter or something else the maker
What HN said
What people liked
Beautiful, ethereal art-like effect
From 2 comments
Very neat, the outcome probably isn't what you were hoping for, but it has a beautiful and ethereal quality to it. It's like an art piece. From the photos and video, only a small…
Jetroid on HNThe gentle gradients and transformations from black & white to color are charming. It made me think of the scene in Wizard of Oz where Dorothy steps into Technicolor.
max_likelihood on HN
Objections
Colour only shows in a small region of the screen
From 1 comment
Very neat, the outcome probably isn't what you were hoping for, but it has a beautiful and ethereal quality to it. It's like an art piece. From the photos and video, only a small…
Jetroid on HN
Filter alignment is impractical; Tektronix NuColor used a different approach
From 1 comment
Tektronix did it with a totally wild set of LCD color filter shutters over the whole face of the CRT, and then sequential color fields. It meant you got the whole spatial…
myself248 on HN
Requests
Better colour spread with an adhesive acetate filter
From 1 comment
Yeah I would like to improve the effect. I think the main colour region seems to stay the same. I'm wondering if I can get acetate that's ever so slightly adhesive, so it sticks…
anfractuosity on HN
Questions
How does autochrome work and how is this related
From 2 comments
Can someone explains how this works? I have frustratingly been googling for 30 minutes now trying to learn how autochrome works. Being tech oriented it's so frustrating when…
Exuma on HNThe trick is because the shade of grey DOES have chroma. You can't just apply any autochrome panel to the image (unlike what the OP is trying to do with Rainbow), instead, the…
Jetroid on HN
Is a home printer sufficient for the pattern
From 1 comment
That's awesome! I guess diffraction of light between the original pixel and the filter is also a reason for the low quality. It would be nice if the author explained a bit more…
elcomet on HN
Alternatives named
JVC LCCS colour shutter display
From 2 comments
JVC built a working model with that approach. There's a neat breakdown of the tech on this YT channel: https://youtu.be/z-q8ehzHeQQ
tootie on HNI'm reminded a bit of the JVC TM-L450TU LCCS (http://www.earlytelevision.org/jvc_tm-l450tu.html), which used some clever tricks to make a fundamentally B&W LCD show colour.
talideon on HN
Tektronix NuColor
From 1 comment
Tektronix did it with a totally wild set of LCD color filter shutters over the whole face of the CRT, and then sequential color fields. It meant you got the whole spatial…
myself248 on HN
Autochrome colour photography
From 1 comment
Autochrome was an early technique for color photography. Wikipedia has a pretty good explanation [1]. The starch grains were randomly scattered on one side of the photographic…
CrazyStat on HN