[Lab] cheapest way to make these?

Darcy Whyte darcy at siteware.com
Mon Aug 22 09:51:31 EDT 2011

I made up a prototype of one of these with an arduino.

If I wanted to make a bunch of them what would be the cheapest way of going
about it?

Perhaps a 5, 16 and 32 LED version.

You can see the timing of the LED flashing in the code.

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