[sdiy] Divide by 10^6?

[Antti Huovilainen]

On Fri, 28 Aug 2009, Needham, Alan wrote:

> A tiny microcontroller would eat this job - single chip solution.
> Use the 20MHz as the micro's clock and a simple program could even
> supply a couple of LED flash rates (or 4 LEDs with quadrature drives?).

Beware that external clock often has restrictions on duty cycle and 
rise/fall times. A better solution is to use asynchronous timer input 
which is available in many MCUs.

Antti

"No boom today. Boom tomorrow. There's always a boom tomorrow"
   -- Lt. Cmdr. Ivanova