F1 Style Rear Blinker

Originally Posted by cherubim

Whatever the end design I use, it's best to test using the actual hardware the circuit will be driving. So, it's useful to have the bulb I'll be driving.

A 7440 bulb should not be difficult to procure in the US. A quick google search shows them available online for $3.

While a full blown PIC18 microcontroller could be overkill for this kind of project, an 8-pin PIC16 and a couple of transistors can make this a very small circuit leading to significantly easier installations. A flasher/relay circuit is also an option, and I can build one of those immediately.