Fresh hacks every day
[Monirul Pathan] decided to make the card as unique as this gift when getting ready for a birthday. He designed and built his own musical card with LED edge-lit acrylic to display the message. The electronic design seeks to keep things as flat as possible. The card-shaped acrylic panel has a void to fit the PCB exactly, and the components are relatively flat. One thing we found quite … [Read more...]
We are fascinated by the hybrid rocket engine which [Ben Krasnow] built and tested in his shop. It is actually using a hollow cylinder of acrylic as the fuel, with gaseous oxygen as an oxidizer. We're already quite familiar with solid rocket propellant, but this hybrid approach is much different. When a rocket motor using solid propellant is lit it continues to burn until all of the fuel is … [Read more...]
Here [Catarina Mota] is showing off a ring of magnetic ink printed on a piece of paper. It's strong enough to hold a disc magnet in place when the paper is raised vertically. This strength comes from mixing your own batch of ink. Magnetic ink has been around a long time and is most often used in banking. The account number and routing number on the bottom left of paper checks are printed in … [Read more...]
[Simon Inns] is showing off the Raspberry Pi case which he built out of acrylic. It provides a lot more protection than a flimsy film case, but it is also a little bit more involved to fabricate. No, this doesn't need to be laser cut, but to get the nice edges [Simon] used a band saw which many don't already have in their shop. Ask around, or poke your head in at the local Hackerspace. It only … [Read more...]
As a retired industrial designer, [Dave] has a lot of time to do what we'd all like to do: sit around in a workshop and make stuff. His latest project, an acrylic light display of an Indian motorcycle looks fantastic and betrays his designer heritage. The base of the light display is made up of a laminate of a few 1/4" pieces of Poplar carved on [Dave]'s CNC machine. These pieces were glued … [Read more...]
[BadWolf's] girlfriend wanted him to build her a lamp for Christmas and he didn't disappoint. What he came up with is a water-filled color changing lamp with bubbles for added interest. See for yourself in the clip after the jump. The color changing properties are easily taken care of by some waterproof RGB LED strips. [BadWolf] went the Arduino route for this project but any microcontroller … [Read more...]
Although [Danman] was right on time with his home-hacked Valentines day gift, this article comes to you a little late. With the message on the heart changed, however, it could be a perfect "Sorry I forgot Valentines Day again" gift, so it may still be useful. The concept isn't that complicated, simply a strip of LED lights around a piece of acrylic. A battery holder and switch rounds out this … [Read more...]
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