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For the term "mini".

Mini Lord Kelvin Replenisher —- A simple electrostatic generator

This is an electrostatic generator that is based on the ‘Lord Kalvin Replenisher’ invented in 1867. What I show here is a small version of the device built by Thomas Kim here at YouTube….

Arduino: TKs FFTDuino 2: Fast Fourier Transform Spectrum Analyzer Color Organ

Continuing the build of the FFT-based color organ. I’m amazed at the brightness/current ratio of these LEDs. They are really bright. When I first tried them I used 5 v and 220R and they…