Monthly Archives: November 2007

  • All sorts of people are using toaster ovens and skillets to reflow (meltl) solder paste on PCBs, but one bottle neck is applying paste to the pads. Using a syringe takes a long time, and getting custom made stencils is fairly expensive. tymm posted a cool instructable showing how to roll your own solder paste stencils. He uses the same process for etching your own circuit boards but does it on a thin piece of copper bought from a hardware store.

  • Motors inside the ball work against a counterweight to allow it to move without external wheels. I believe certain pitches and sequences control how it moves. It can also play music itself--a piezo actuator uses the entire outer shell as a speaker to play back manipulated portions of what it hears. From a Robotics and Art conference that was taking place near RoboCup 06.

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