Piggyaxe 6 led random flasher kit piggyaxe p a kit of parts to make a circuit that flashes 6 leds at random the circuit is really 6 separate circuits combined into a single chip a cmos 40106 hex 6 schmitt trigger p p the overall circuit is made up of 6 relaxation oscillators directly driving 6 leds the free running oscillator frequencies soon drift apart and become out of sync thus producing an eye catching random display by angling the leds and adding ping pong balls as light