Scrolling LED eye circuit (unmounted)

This was a circuit I built for a friend's helmet for an Atlas Halloween costume. The eye addition was inspired by the Raider/Centurion Cylons in Battlestar Galactica to prompt us to make a Mechwarrior-Cylon hybrid. Circuit schematic can be found at www.qsl.net which is a very elegant design, with me modifying the circuit considerably. No microcontrollers (or PICs) were used for this circuit, which probably would have made my life much, much easier. Two strips of 8 LEDs were mounted in a line to allow for either one single bar mounting on the helmet as a single eye, or two separate eyes. Modifications to this circuit included the 74HC138s driving individual 2N3096 PNP switch transistors to switch on LEDs that was in series with a 220ohm resistor (to adjust for LED brightness) and a 220uF capacitor (to adjust for fade time) that was in parallel with the LED and resistor. Without this modification, the LED would have simply turned on and off without any fade. I could have probably used a single 220ohm resister to sink all of the LEDs, but I was too lazy to protoboard it to verify whether it would have worked. Input signals to the flip flop with the 74HC14 had a DPDT switch that poled pin 15 of the right HC138 instead of the left one and synchronized chip select (pin 6 of the left HC138) to the output of pin 2 of the CD4516 for both demultiplexers to allow for simultaneous output and "inline" LED sweeping (though you could just reverse it by flipping one set of LEDs ...