Are you sure this is the waveform that the servo expects? Typical hobby
servos require a 50Hz PWM input, where the pulse width varies between
1-2ms. See IOIOSimpleApp as an example.
On Sep 25, 2014 10:48 AM, "Sam Brown" <[email protected]> wrote:
> I started an IOIO app from the HelloIOIO sample, and converted the "turn
> the light on or off" button to a "send a PWM signal" button so it could
> drive a servomotor.
>
> With minimal changes, the code works beautifully: (Excerpt from void
> loop())
>
> if (button_.isChecked()) {
> pwm.setDutyCycle(0.5f); // Don't spin.
> } else {
> pwm.setDutyCycle(1.0f); // Do spin.
> }
>
> But once I no longer key the pwm off the button, it fails. Making this
> trivial change, which I would expect to spin the motor always, prevents the
> motor from spinning ever:
>
> if (false) {
> pwm.setDutyCycle(0.5f); // Never reach here. Never stop.
> } else {
> pwm.setDutyCycle(1.0f); // Always choose this. Always spin.
> }
>
> Can anyone point out what I'm missing?
>
> - - - - - - - - - - - -
>
> Originally posted on StackOverflow, here
> <http://stackoverflow.com/questions/26032111/pwm-on-ioio-works-when-tied-to-a-button-fails-always-when-independent-of-button>
> .
>
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