Jason E. Brown writes:
> Let me know what you think [about the ESC code].....

One thing I have noticed is that the PWM frequency will be about 20
Hz, with a 4 MHz oscillator. You count 100 timer0 timeouts for each
pulse cycle. There is a table of values that returns the length of the
high part of the cycle but instead of using 100 separate pulse high
times there are actually only about 30 returned by the table
lookup. This means that you could use 32 separate duty cycles and
count only 32 timer0 timeouts instead of 100 and it would give exactly
the same duty-cycle resolution but increase the PWM frequency by a
factor of 3.

Even still, I was under the impression that it would be desirable to
have a PWM frequency in the kiloHertz range and that only 16 or
perhaps 8 distinct duty cycles would be needed (at least for RC
cars). Can anyone comment on this? Does anyone know what the time
constant of an RC motor is?

Mal Goris
--
http://www.nfra.nl/~mgoris/