this post was submitted on 10 Nov 2023
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Solarpunk

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[–] [email protected] 78 points 9 months ago (2 children)

I use a projector to paint buildings with light. If you live near SF, join up with orgs protesting billionaires stealing our future.

[–] [email protected] 14 points 9 months ago (1 children)

Cool beans! What kind of software do you like to use to cue up the images?

[–] [email protected] 25 points 9 months ago (2 children)

Most of the projections are not geometry-critical so I think it’s just about projector placement and adjustment.

What's more interesting: what projector is it and how is it powered? It’s crazy bright for a portable setup.

Also, did you write this?

Please post more photos on the Fediverse rather than Twitter or Instagram.

[–] [email protected] 15 points 9 months ago (2 children)

Powering it is the hard part. I use a lithium battery in constant danger of melting.

Yes, I did write that. More to the point, I wrote a solarpunk mystery novel, which I’ll post about on Monday.

Given the great response, I will post more relevant projections here. What community tag should I use?

[–] [email protected] 4 points 9 months ago

Still, what kind of projector?

You could try going old school and using something like a slide, overhead or film projector for static images (with a modern mercury/LED lamp): you’ll get 3x higher light efficiency than colorwheel DLP (color filters lose ⅔ light each) and 2x higher than 3LCD (prisms divide light efficiently but polarization loses ½ of it).

[–] [email protected] 2 points 9 months ago (1 children)

@AEMarling @ChaoticNeutralCzech The two in your projection are definitely appropriate, and are how I found your post. Maybe #GuerillaActivism and #ClimateCrisis. Be sure to use PascalCase for hashtags so that screen readers break them into sane words, and use alt text for your images :)

[–] [email protected] 1 points 9 months ago (1 children)
[–] [email protected] 2 points 9 months ago

It's how it works when you reply to a Lemmy comment from Mastodon. It will automatically tag the comment you are replying to and it's parent.

[–] [email protected] 2 points 9 months ago (1 children)
[–] [email protected] 2 points 9 months ago

Most of them are static images, so... any picture editor?

[–] [email protected] 5 points 9 months ago