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Woodturning (rec.crafts.woodturning) To discuss tools, techniques, styles, materials, shows and competitions, education and educational materials related to woodturning. All skill levels are welcome, from art turners to production turners, beginners to masters. |
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Interactive Dynamic Piece - No Physical Contact Required
This is one of three pieces in The Three Sisters set I've been working
on - for what seems like FOREVER. Like the other two, it uses a small, battery powered, programmable micro-computer to control its "behavior". A small unobtrusive sensor (a Light Detecting Resistor) is incorporated in the finial. When a shadow falls on the sensor / detector the "controller" senses the change and turns on a special type of light emitting diode (LED). This little puppy has THREE different little LEDs built into one lens - Red, Green and Blue - RGB. Each of the three LED's brightness can be set to one of 255 levels - 0=off, 255 = max brightness. So - with a little programming magic - it can put out any color in the visible spectrum. So, this piece sits there looking like a normal static hollow form with finial - and some little surface decorative "beads" around it. But when a shadow passes over its finial it goes into Display Mode - the little beads begin glowing - and changing colors. Shadow goes away - the beads stop glowing - the piece returns to being a normal static turning. I shot the video with day light coming through windows on three sides so I had to cup my hand over the sensor to shade it. If the piece were top lit the sensor would be triggered from farther away - say by leaning over the piece examine it. Working with these micro-computers / "stamp controllers" was just a wee bit trickier than I thought it would be. With just ONE controlled "component" things are easy. With two controlled components it still isn't that tricky. To get them to work together - the way you want them to work - well THAT can get tricky - IF timing is important - for generating a tone at a specific pitch - or tones whose pitch changes based on what a "sensor" is seeing, feeling or hearing. I'm working on a bunch of web pages about this "stamp controller" thing that hopefully will make things easier For The Next Guy - or Gal. Will be posting links to the Youngest Sister and the Oldest Sister in the near future - hopefully. Here's the link to the YouTube vid of this one http://www.youtube.com/watch?v=Uo4xLYxGGG4 comments, questions, constructive criticism welcomed. |
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