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From: "Dave VanHorn"
Subject: Re: Which Microcontroller to use?
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Date: Thu, 19 Sep 2002 20:42:06 GMT
"Roger Johansson" wrote in message
> "Dave VanHorn" wrote:
> >You'll find the atmel AVR series easy to use.
> Yes, and he can build the oscillators from discreet components.
> Such an audio oscillator can be built with one transistor or an opamp)
> and a few other components. (find a suitable circuit on the web)
Not necessary in the AVR, the timer outputs come out to pins, (optionally)
so you can set the timers up to generate a square wave output of whatever
In the Tiny-26, you have high speed PWM. The chip can run on it's internal 1
MHz RC (no external components required) and the PWM runs at something like
27 MHz IIRC. We're using this as PWM for a battery charger.
It might be necessary/interesting to chirp the ultrasonics, so timers would
allow this easily, and under software control.
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