Cylon Bike Scanner

Inspired Evil Mad Scientist's Cylon Jack-O-Lantern I've build a Cylon bike light for my son... First of all, read EML's article to make sure you're comfortable with the electronics. I had a lot of issues getting the 555 timer to reliably trigger the 4017, so used the 9v LED flasher circuit from Bill Bowden's site which worked much better (for me). I built my circuit on two pieces of stripboard: 1) A long piece with 3 LEDs per channel plus the resistor, capacitor, transistor circuitry than gives the LEDs their 'afterglow' effect. 2) A small piece with the 555 and 4017 which was shaped to fit in an Altoids tin along with a 9V battery.

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