AVR-Chat

--- In AVR-Chat@yahoogroups.com, "Larry Barello" <yahoo@b...> wrote:
> With the AVR it is pretty easy (well, probably difficult the first
time...).
> 
> http://www.barello.net/Papers/AVR%20RC%20output.pdf
> 
> Shows how to generate 8 R/C pulse outputs with a couple lines of
code and a
> shift register.  You could hack it to just output one pulse (i.e.
drop the
> shift register...) then write a few more lines of code to take whatever
> input you want (analog signal) and pump out the appropriate R/C pulse to
> your favorite off the shelf three phase BLDC motor controller/motor
combo.
> 
> Cheers!


The problem with the current small mills is that the motors are slow
speed, rarely over 6,000 RPM and certainly not up near 30,000 RPM

An entire mill head is available, but the motor is over 4 pounds, I'm
expecting my entire unit to weight less than one pound.

Dave





> 
> P.S. If all you want is a small high speed motor with speed control,
check
> out the cheap desktop mill's from places like Grizzley.com - perhaps
you can
> get a motor/controller as spare parts?  Or check out Grainger.com 
This kind
> of stuff is very common.
> 
> -----Original Message-----
> From: AVR-Chat@yahoogroups.com [mailto:AVR-Chat@yahoogroups.com] On
Behalf
> Of Dave Mucha
> Sent: Monday, September 05, 2005 10:57 AM
> To: AVR-Chat@yahoogroups.com
> Subject: [AVR-Chat] Re: R/C throttle control ? what is best ?
> 
> Thanks all,
> 
> I guess I have been more focused on how to get the signal to a
> purchhased R/C controller than the best way to control a motor.
> 
> I would like to use a brushless motor.  There seem to be pretty large
> burshless motors, and they can spin 25,000 PRM or better.
> 
> So, if I restated my goal as a motor that can turn 15,000 or more, and
> have a controller to regulate speed, what would anyone recomend ?
> 
> I am leery of a brushed motor as of the higher maintenacne of them.
> 
> Dave
> 
> 
> 
> 
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> 
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>  
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