Little flashing lights

pict0125.jpgI was thinking the other day about LEGO (as you do) and remembering some of the things I used to build and some of the parts I used to have (and fight over with my sister)

I remember that my younger brother had a police set that had flashing lights and sound which was pretty cool and I started to think if I could make something similar using LEDs and a PIC.

The parts my brother had were these 1×4 flashing light block that came from this police truck set.

I had a look around the web and found some quite cool possibilities such as this modern looking light stalk but what I particularly want to create is a revolving multicolour beacon like you see on top of police cars.

I don’t want to get into physically revolving a reflector around a light source like in real life, this could prove to be a pain and also pretty fragile. Instead I want to use multiple LEDs arranged in an outward facing star and pulse them on and off in sequential order using the PIC.

The problem that immediately springs to mind is size, a whole bunch of LED, a PIC and associated circuitry is going to take up space, certainly more than the 1×4 block I initially thought of.

But by using SMD components and a bit of creative thinking I think I can get something working pretty well quite easily.

Read on to see how I get on.

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