Re: [Gumstix-users] More than 6 PWM?

[James D. <jd...@at...>]

Thanks, Andy!


Andy Klesh wrote:
> You do not have to use the PWM channels for servo control, though they
> are the easiest way.
> 
> By utilizing an overflow timer on the Robostix, you can set up a
> switch statement to "create" the PWM pulse yourself. Then you can use
> a combination of general I/O pins to create as many servo channels as
> you want. This is limited only by the number of pins available.
> 
> If you are running servos directly on these pins, be careful how much
> current you are drawing. The Vcc next to the general I/O pins is not
> connected to the Vbatt power. There are many ways take this into
> account however with a little rewiring of the servo connectors.
> 
> ~Andy Klesh
> 
> On 4/26/07, James Drane <jd...@at...> wrote:
>> Hi,
>>
>> I'm trying to find a solution for my robotics application, and I am
>> wondering if a combination of gumstix boards will suffice.  Is there any
>> way to get >6 pwm (I need 7) channels via a board combination?  It seems
>> the expansion boards are limited to 6.
>>
>>
>> Thanks,
>>
>> James
>>
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