Conway's Game of Life, in real life(lcamtuf.substack.com)
158 points by surprisetalk 7 hours ago | 20 comments
exolab 3 hours ago
> I figured out what would be a reasonable amount to spend on the project and then multiplied that by 10.

I like the way you think.

alexpotato 0 minutes ago
Jeff Atwood has a great quote:

"I needed to replace 18 lightbulbs in my chandelier. Turns out 18 times any number is a lot. In cash"

eps 3 hours ago
I saw one in a computer museum in Switzerland. It was a much larger field, it was just large orange LEDs (or were they tubes?), but it also cycled between a dozen of different cell automata games. Something about being able to see individual "pixels" made it really mesmerizing.
mittermayr 1 hour ago
Totally off-topic, and I may be wrong, but I immediately loved the non-LLM writing-style and felt glued to the content just through the writing alone. It's getting rare.
Lerc 38 minutes ago
I have not felt that it was becoming rare. Certainly on platforms like YouTube you can see automated processes cranking blandness at scale. I haven't found it encroaching on the topics that interest me like toy electronic projects, how some ancient game rendered its Sprites, colour space analysis, or a compiler that fits in a tweet,

I'm sure there are an abundant source of 'How I hustled a thumpawangy into $1000 a month in subscriptions" written by AI, but I doubt I could perceive a loss in that compared to the ones we had before.

tmountain 48 minutes ago
Personally, I can barely stomach reading LLM writing. I find myself closing lots of articles after a sentence or two. I wonder how this plays out longer-term regarding engagement.
zytek 52 minutes ago
lcamtuf is doing that for decades!
rojoroboto 17 minutes ago
I bet that the author would really get a kick out of the T2 Tile Project.
possiblydrunk 52 minutes ago
Nicely done! Scale matters. If you make something big enough relative to its expected size, it will impress and captivate, even if it's simple. General observation, not that the construction here was by any means simple.
cjfd 2 hours ago
When I was a teenager, I read a book about assembly language for the commodore and implemented the game of life in a really simple way. I just used the text screen. To switch on a cell, I would put an asterisk ('*') in it. Then I could run my machine code program and it would evolve according to the rules of the game of life.
abcd_f 2 hours ago
And who didn't do that! :)

You could also 4x the resolution by using half- and quarter-block characters from the top half of the ASCII table (or it'd be the PETSCII one i C64 case).

lproven 47 minutes ago
> And who didn't do that! :)

Exactly. It's even how I taught myself extremely basic Pascal -- getting my BASIC Life program running in Pascal. With asterisks.

A taught a friend at uni, who was a much better programmer than me, how the algorithm worked. He did a pixel-by-pixel version in machine code, but it was a bit slow on a ZX Spectrum.

So he did exactly the quarter-character-cell version you describe. I wrote the editor in BASIC, and he wrote a machine-code routine that kicked in when told and ran the generations. For extra fun he emitted some of the intermediate state to the border, so the border flashed stripes of colour as it calculated, so you could see it "thinking". Handy for static patterns -- you could see it hadn't crashed.

I've been considering doing a quarter-cell Mandelbrot for about 30Y now. Never got round to it yet.

mastermedo 2 hours ago
A thousand bucks for 17x17 touchscreen. Add a painting frame, hang it on the wall, and you made yourself amazing art for cheap.
PetitPrince 4 hours ago
My Alma matter has a jumbo version of this, in which the game if life is one of several available mode https://en.wikipedia.org/wiki/BioWall
lproven 44 minutes ago
This is fantastic, but there's no way I am taking the time to build one, and the cost is a little frightening...
Cthulhu_ 2 hours ago
I love this and would love to see it on a wall at our office or something like that. Maybe there's smaller/cheaper led/switches that would work in a handheld version.
slow_typist 3 hours ago
Très cool.

A grid of capacitive touch sensors could be printed directly on the pcb, bringing down costs by a degree of magnitude. Real switches are much more satisfying though.

f1shy 3 hours ago
I want to do a game like lights out. I'm thinking in 3d printing transparent caps and using dirt chip pcb switches and standard leds. The cost must be also down to 30 cts. Would be like a middle ground.
vunderba 6 hours ago
Nice. A friend of mine just picked up a Linnstrument, and I’m very tempted to create a Conway’s Game of Life-based musical visualization for it.

https://www.rogerlinndesign.com/linnstrument

Cthulhu_ 2 hours ago
Neat! For homebrew / "iot" stuff, there's LED button panels like https://www.adafruit.com/product/1929 that could work.
galaxyLogic 4 hours ago
I wonder is there a version GoL where every bit on a computer-display or LCD TV is one cell? How does it look?
alex_duf 3 hours ago
Do you mean every pixel or every sub-pixel? Sub-pixel is interesting because the geometry of the grid isn't going to be the same from one screen to the other. It might also look compressed horizontally.
vscode-rest 3 hours ago
[dead]
eps 3 hours ago
Conversely, it'd be cool to play it on an large empty office building.

One window = one pixel.

slow_typist 2 hours ago
CJefferson 4 hours ago
I've always wanted something like this board, buttons which can light up (preferably a few colours), to use to make games. Anyone ever found such a board which is hackable / programmable?
rmnclmnt 3 hours ago
Novation Launchpad used to be exactly that: you send MIDI CC messages with proper values and you can light up the grid (with different colors).

Did that a few years back, i guess this might still be possible

1313ed01 3 hours ago
> used to be

Looks like they are still around? https://novationmusic.com/launchpad

Also seems to be in stock locally.

The device that I think popularized that design (citation needed) was the Monome (https://monome.org/) that looks like it is also still around and it has (always had?) some kind of open source license (https://github.com/monome).

Cthulhu_ 2 hours ago
https://www.adafruit.com/category/280, they're ready made from 4x4 to 16x8 but in theory you can just put more modules into an enclosure.
self_awareness 3 hours ago
That's not a "physical" version of game of life -- that's a digital version, like every version, but with bigger pixels.
Cthulhu_ 2 hours ago
Does make me wonder if it's possible to make a physical / analog / mechanical version of Game of Life.

fake edit: yes, kind of: https://www.eurobricks.com/forum/forums/topic/164622-moc-mec...

zabzonk 1 hour ago
sure is - i made one using poker chips and a chessboard - i had to do the computations using my own brain though :-(

https://latedev.wordpress.com/2011/06/25/a-poker-chip-comput...

gspr 2 hours ago
I think "physical" refers to the fact that you initialize the state by pressing physical buttons. That's quite accurate.
mkirsten 2 hours ago
It is beautiful
fwipsy 4 hours ago
I don't want to build this or pay for it, but I really want to mess with it for an hour.
nsnzjznzbx 1 hour ago
You need a science museum!
Traubenfuchs 2 hours ago
Would be interesting to do this with people and observe the inevitable mistakes they make.

Now that would be simulating life witg life.

ordu 1 hour ago
Well, people can die if they have too many or too little of neighbors, but they can't be summoned from a thin air if they have just enough neighbors. Hard to simulate life with people. Though if you are ready for a simulation step of 20 years or so... But it still may not work, because you need people of two opposing sexes and compatible genders near the empty sell to fill it. In Game of Life all cells are hermaphrodites.

But I agree mistakes might be fun to watch.

gethwhunter34 2 hours ago
[flagged]
shawoodle65 2 hours ago
[flagged]