Timer interrupts for a servo motor

I'm using timer interrupts to make a square wave to drive a servo - it's not working.

To figure out if I'm generating the right frequency / duty cycle of square wave I need an oscilloscope, right?

Are there any oscilloscopes on campus you can just, like, use? Or do I either have to figure this out by the end of the next lab period or fail?

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Permalink Reply by Kenny Kim on May 1, 2014 at 4:46am

The utility board has a oscilloscope module I believe, hook it up to a computer

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Permalink Reply by Kenny Kim on May 1, 2014 at 4:46am

Wait, why not pwm

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Permalink Reply by Kenny Kim on May 1, 2014 at 4:46am

I'm doing manual because I was under the impression that the built-in PWM's max period is too small - I think you have to slow down the clock a lot? Maybe I should look into it.