https://graffitiresearchlab.com/blog/projects/laser-tag/#vid...

everything old is new again, and toys will be toys

While this is interesting, what I really wanted to see was more 'graffiti' and less 'laser'.

Graffiti, fundamentally, is a defacement of public property as a form of artistic self expression. To that end, why not combine this with a laser engraver instead of a laser pointer?

Imagine hooking this up and then literally carving your graffiti into the side of a brick building. Or burning it into the paint on a metal container car.

Obviously such a thing has the potential for serious bodily harm and could start building or wild fires inadvertently, to say nothing of the energy consumption requirements such a laser engraver would necessitate.

Counterpoint: rule of cool.

Very cool. I remember seeing a video of some people doing this on a whole building… found it: https://m.youtube.com/watch?v=DKbtTPYZEig&t=30s

Hi HN and สวัสดีครับ! I remember seeing this the first time in Vienna by a friend of mine, Michi who came back from NYC and I believe he learned about it at the local hacker space at the time: NYC resistor.

I knew Michi through the Metalab, our hacker space in Vienna. Originally the idea seems to have been from the Graffiti Research Lab, which is also what I've linked to on my page and in the repo's Readme.

I think the version that Michi used was a MacOS app (not sure which framework), but I've always wanted to make it a web app. So all you need now is a projector, a laser pointer, and a laptop (with a camera).

I've already tried a few fun setups (eg using the iPhone's camera or using AirPlay connected to the projector). It's quite flexible.

Let me know if you end up using it and please share videos / photos and I'd be happy to put them up.

I know the original is old-skool cool, which I think makes this a fun project.

I'll try to set it up at the next CCC (2027) - if you see me there, come say Hi (I'll probably be in a banana costume).

I dont have a laser pointer, will a laser thermometer work?

What made GRL’s project really unique was the -scale-!

Being able to paint the facade of a 20-story building must have felt ultra powerful.

Not drawing (yet), about to arrive, but I built a whole projected arcade system on the same vibe, but way before vibecoding… :)

https://s-argame.com

This is so cool!! I bet could get my kid to spend hours on this :)

triggered some memories of other fun projects:

- gray scale image made from laser and fading glow in the dark paint https://www.youtube.com/watch?v=FUa9UgAZTIY

- i remember a version of this phosphorescent wall at the los angeles children's musuem. a strobe imprinted your shadow. https://www.exploratorium.edu/exhibits/shadow-box

Always wanted to build something like this! Brings back memories of trying to control cheap laser pointers with an Arduino.

This is really cool! I wonder if for the drip on neon you could make it start from the bottom of the line to make it a little smoother. And maybe you could try making it translucent for the marker so it matches the marker ink.

Always wanted to mess around with a projector like this! The alignment problem on weird surfaces must have been a fun challenge.

Reminds me of messing with old laser pointers as a kid, but way more sophisticated. Love seeing creative uses of tech.

Immediately thought of WarGames. The applications for temporary outdoor displays are super interesting.

whos this actually for? , your icp to be precise What would make the next 90 days a success for you?

Good luck with the launch!

very cool. love to see this used on a builder or outside somewhere

Cool. I'm imagining the extra fun of using that with a cat jumping at the laser dot.

So cool! I can see its application in presentation. Does this support more than 1 laser btw?

very cool, I can imagine use-cases like a friends evening playing at home with the projector or even school doing didactic.

love the whole simplicity and the style too.

Consti, this could do well on IG and TikTok.

Love the take on AI

These green laser pointers are bright enough to cause eye damage from the reflection off surfaces, for humans and pets.

Looks cool!

Cool project

"Tanning invitation"

/Ob Real Genius