On 25 April 2010 19:50, Andy Pugh <a...@andypugh.fsnet.co.uk> wrote:

> I am thinking of buying one of these for further experimentation:
> http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=6880732
> Mainly as the package includes shoot-through protection

Thinking some more about this, the shoot-through protection means that
you can just drive the low-side inputs permanently low and apply PWM
to the high-sides. I have no idea if that will work.
There are 4 PWMs on the Arduino, though two share a timer.
The Mega has 14 PWM pins though, so presumably has rather more timers
and possibly more options (I have not looked)

I think that means that it could be done, but you might run out of CPU
calculating the phase angles and duty cycles.

-- 
atp

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