Jason Coon

New episode! @johnpark.bsky.social joins the show and shares floppy disk MIDI boomboxes, @todbot.com shares AlgoRave - live coding music, @paulcutler.org shares the rp2350 as a mini-computer (with the Adafruit Fruit Jam released days after recording), and more! www.thebootloader.net/blog/2025/08...

Playing with the 8x8x8 LED Cube, creating new patterns using the built-in #Pixelblaze by @bhencke.bsky.social.
Get your own cube: lectronz.com/products/led...

I made another little thing. It's a particle sim driving a voronoi fracture. The results then get some uvs and topology love before being shipped off to the displacement algorithms and rendered. Made in Houdini and rendered in Blender. #houdini #blender

Weekend achieved, recharge process has begun.
1" Fibonacci128: lectronz.com/products/inc...
Dummy 13 Chest Armor: www.printables.com/model/1373122

Working on battery/charge voltage indication and low voltage deep sleep using an @adafruit.com QT Py SAMD21 and LiPo BFF. Needed to move to a breadboard so I could separate USB and battery power, monitor the readings over serial, etc.
Code: github.com/jasoncoon/fi...

I've played less than an hour, but I'm really enjoying Primal Planet so far.
"a metroidvania with survival & crafting elements, a pixel-perfect aesthetic & action-packed story, all on a lush planet filled with dinosaurs."
www.gog.com/en/game/prim...
store.steampowered.com/app/2350270/...

The tiny one inch (25.4mm) Fibonacci128 perfectly fits in the front chest plate of Dummy13 printed at 200% scale. I'm working on a modified 3D model with a cutout for it in the front and a "backpack" to fit an @adafruit.com QT Py and LiPo BFF.
1" Fibonacci128: lectronz.com/products/inc...

The tiny one inch (25.4mm) Fibonacci128 perfectly fits in the front chest plate of Dummy13 printed at 200% scale. I'm working on a modified 3D model with a cutout for it in the front and a "backpack" to fit an @adafruit.com QT Py and LiPo BFF.
1" Fibonacci128: lectronz.com/products/inc...

Fibonacci256 Expanding - 166mm disc w 256 RGB LEDs Fibonacci256 Expanding is a beautiful 166mm circular disc with 256 RGB LEDs surface mounted in a Fibonacci distribution.

New on Lectronz: Fibonacci256 Expanding - 166mm disc w 256 RGB LEDs https://lectronz.com/products/fibonacci256-expanding-166mm-disc-w-256-rgb-leds
#Displays #LEDs #Lights

It's been a while since I promoted my own and others' Maker/Electronics Starter Packs!

bsky.app/starter-pack...

bsky.app/starter-pack...

bsky.app/starter-pack...

bsky.app/starter-pack...

bsky.app/starter-pack...

bsky.app/starter-pack...

bsky.app/starter-pack...

Finally revisiting "Fibonacci256 Expanding"! I found a few working LED PCBs in my stash, finished the #lasercut acrylic enclosure, got it working with #PixelBlaze by @bhencke.bsky.social, submitted for approval on Lectronz, and up for sale soon!
www.evilgeniuslabs.org/fibonacci256...

Finally revisiting "Fibonacci256 Expanding"! I found a few working LED PCBs in my stash, finished the #lasercut acrylic enclosure, got it working with #PixelBlaze by @bhencke.bsky.social, submitted for approval on Lectronz, and up for sale soon!
www.evilgeniuslabs.org/fibonacci256...

Aw, thank you John! ❤️💚💙

Fibonacci256 price drop!
I messed up when copying the listing from Tindie to Lectronz. It's fixed now, resulting in a $120 drop in price. If you'd previously taken a look at the listing, you might want to take another look. Sorry about that! 😅
lectronz.com/products/fib...

Instead of pixels being only off or on you can use a wave function for brightness. The period of the wave is each pixels' radius, you get a much smoother pattern. The #Pixelblaze code is short & relatively simple: gist.github.com/jasoncoon/db...
Get your Fibonacci256: lectronz.com/products/fib...

What I find really neat about the pattern in the previous post is if you watch any pixel it just smoothly blinks off and on at the same rate the entire time. The further the pixel is from the center the faster it blinks. It's a similar "incremental drift" as a pendulum wave:

Instead of pixels being only off or on you can use a wave function for brightness. The period of the wave is each pixels' radius, you get a much smoother pattern. The #Pixelblaze code is short & relatively simple: gist.github.com/jasoncoon/db...
Get your Fibonacci256: lectronz.com/products/fib...

Carl Sagan's "The Demon-Haunted World: Science as a Candle in the Dark" was literally life-changing for me. It completely changed the way that I saw the world.

PBS: Public Broadcasting Service Watch full episodes of your favorite PBS dramas, find in-depth news analysis and explore documentaries on history, science, art and more!

I just made a yearly donation of $60 to my local PBS station and received a subscription to their streaming service Passport. It includes all of their shows: Nova, ACL, News Hour, Bob Ross, Test Kitchen, all the Ken Burns documentaries, etc. Watching the DaVinci doc now.
www.pbs.org/passport/lea...

Oh, I would gladly exchange yours. I could send you a fully assembled one and a label to return the kit, if you'd like.

Screenshot of my store on Lectronz, showing a variety of colorful LED creations: discs large and small, chameleon, octopus, flower, cube, heart, etc.

If you'd like one of your own, I make them in a variety of shapes, sizes, LED counts, and prices, either fully-assembled or DIY kits: lectronz.com/stores/evilg...

YouTube video by Jason Coon (Evil Genius Labs) 24 minutes of Fibonacci256 ColorWaves

If you'd like more (24 zen minutes) of ColorWaves on Fibonacci256: www.youtube.com/watch?v=SQbn...

If you take all of that, use ColorWaves by LED guru Mark Kriegsman, port it to #Pixelblaze with the help of @bhencke.bsky.social, use long slow smooth wave functions for hue, saturation and value, and use color palettes instead of just shouting rainbows, you get this.
lectronz.com/products/fib...

If you increment the starting LED, instead of always starting in the center at LED 0, the spirals are rotated and appear to spin. Here I'm manually changing the increment between lit LEDs.
lectronz.com/products/fib...

Here is the same pattern moving in extremely small fractional increments from just two to three steps between lit LEDs.
lectronz.com/products/fib...

Screenshot of the Pixelblaze web UI, displayed in a web browser. At the top of the screen there are controls for Increment, Auto, Speed, and Smooth. The main part of the UI shows a javascript code editor. On the right side an interactive preview is shown.

I created this interactive demonstration pattern using #Pixelblaze by @bhencke.bsky.social, here's the code: gist.github.com/jasoncoon/6b...

If you increment N in small fractional steps instead of integers, you get a smooth transition between the spiral patterns.
lectronz.com/products/fib...

In disc phyllotaxis, like Fibonacci256, lighting every N LEDs from the center produces a pattern. If N is from the Fibonacci sequence a spiral (or mesh of spirals) is produced because the divergence (angle of succession in a single spiral arrangement) approaches the golden ratio.
evlgeni.us/f256hdr

Hello Tom and @katzcreates.bsky.social! 👋