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The foam is a good idea. I had to make this in short order out of supplies around the house and tried using some springy stuff for the wrist but it was hard to get a consistent movement, so just made it rigid. Not a new idea, I know, but had fun with it.
I saw a fun one a few years ago for the 4th of July. It was a battery operated fan that would display animation of fireworks when the fan was running. The fan blades were a flex circuit with RGB LEDs that produced the animation. I wanted to say that it was a very cool toy, but that would be an awful pun even if it wasn't intended.
My kids had such a toy MANY years ago. You swung this paddle shaped object back-and-forth and it displayed your keyed in text using LED's. In the dark your eyes provided the persistence to make a stable image.
(My youngest is about to turn 39 years old... so this was quite a long time ago.)
Instead of pine, it might be better to use styrofoam. Seams the weight would waer on your wrist after a while. Another improment would be to use a spring steel joint between the handle and the "hand". That way, a little motion would set the hand into action with less strain on the wrist. Just a though for anyone concidering to build this.
The 100% solar-powered airplane Solar Impulse 2 is prepping for its upcoming flight, becoming the first plane to fly around the world without using fuel. It's able to do so because of above-average performance by all of the technologies that go into it, especially materials.
With major product releases coming from big names like Sony, Microsoft, and Samsung, and big investments by companies like Facebook, 2015 could be the year that virtual reality (VR) and augmented reality (AR) finally pop. Here's take a look back at some of the technologies that got us here (for better and worse).
Good engineering designs are those that work in the real world; bad designs are those that don’t. If we agree to set our egos aside and let the real world be our guide, we can resolve nearly any disagreement.
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