Inspired by Sparkfun's LogicBlocks, this ring oscillator can successfully alternate 5 LEDs to create a beautiful demonstration of Inverters(NOT Gates) and how capacitance works. The waveforms get ugly beyond 5 inverters due to the overall capacitance in the circuit. The best looking waves come from 3 inverters, but this example uses 5 for a better LED demo. Enjoy.
To get it going, turn switch off then back on to see affect.
