Glowing Egg Is A One-Oeuf Solution For Tracking Cycles

Look, if something happened to you every three weeks or so to basically turn you into a different person and factored heavily into whether any new humans were created, you’d probably want to …

RGB LED Disco Ball Reacts To Sound And Color

Although disco music and dancing may be long dead, the disco ball lives on as a staple of dance parties everywhere. [Tim van de Vathorst] spent a considerable amount of time reinventing the disco b…

Giant LED Matrix Fills Blank Space In The Kitchen

We’ve all got one: a blank space somewhere in our home that we don’t know what to do with. [James Miller] had one above his kitchen cabinets, so he filled it with a giant LED matrix. Th…

Math You Can Wear: Fibonacci Spiral LED Badge

Fibonacci numbers are seen in the natural structures of various plants, such as the florets in sunflower heads, areoles on cacti stems, and scales in pine cones. [HackerBox] has developed a Fibonac…

Hackaday Prize 2023: Uno Plus+ Updates A Classic

As an introduction to embedded electronics and programming in a straightforward environment, there isn’t much out there that can hold a torch to the Arduino Uno. Cheap (especially if you coun…

Converting A B&W Exposer Head For Colour Analog Photo Printing

[Koraks tinkers] was gifted a gargantuan photographic enlarger, a Durst Laborator 138 s, which is a unit designed specifically for black and white usage only. This was not good enough for [Koraks] …

Washington, DC Finally Gets Its Own PCB Metro Map

There was a time, not so long ago, when folks who wanted to make their own custom PCBs would have found themselves in the market for a bucket of acid and a second-hand laser printer. These days, al…

Fireball-Flinging Figurine Feeds Fiction

If you’re writing a screenplay or novel, there will likely be points along the way at which you can’t get enough encouragement from friends and family. While kind words are kind, acts s…

Teaching You Everything You Might Have Missed About Addressable LEDs

Often, financial motivation results in people writing great educational material for hackers. Such is absolutely the case with this extensive documentation blog post on addressable LEDs by [DeRun].…

3D Printed Lithographic Moon Lamp

After years of being a software developer, [Chris] was excited to get back into embedded development and we’re glad he did. His 3D printed lithographic moon lamp combines a number of hacker a…

RGB LED Matrix Helps Etch-a-Sketch Scratch Out A 21st Century Existence

We never did crack open our Etch-a-Sketch, but we did scrape out a window large enough to really check out the mechanism inside. [MrLangford] is bringing the Etch-a-Sketch into the 21st century whi…

Tree Of Life Branches Out With A Twist

In the middle of 2020, [charlie] challenged himself to conceive of and finish one project every month for the next twelve. Here we are a year later with [charlie]’s last project of the challe…

Virtual Racers Battle It Out On Portable WS2812 Track

Sure modern video games are impressive, but you certainly don’t need a 4K display or high speed Internet connection to have a good time. For a perfect example, take a look at this unique one-…

Dedicated LED Animation Framework For ESP32

[Eric Arcana] has been creating animated holiday decorations for several years, which involved a lot of custom code to make things light up the way he wanted, pulling the microcontroller to make ch…

Gorgeous Specimen Is The Final Word In Word Clocks

At this point, it’s safe to say that word clocks aren’t quite as exciting as they once were. We’ve seen versions that boil the concept down to what amounts to a parts bin build, w…

Compact M&M Sorter Goes Anywhere

Let’s face it — eating different colored candy like M&Ms or Skittles is just a little more fun if you sort your pile by color first. The not-fun part is having to do it by hand. [Ja…

Open Source Pizza Compass Will Show You The Way

In Pirates of the Caribbean, Captain Jack Sparrow has an enchanted compass that points to what the holder wants most in life. The Pizza Compass created by [Joe Grand] is basically the same thing, e…