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PostPosted: Fri Mar 17, 2017 5:47 am 
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We are a kiosk manufacturer from Melbourne Australia, and we are using the VM167 in some of our products.

A new kiosk design we are working on uses a standard servo motor to position a camera. We would like to drive the servo motor with one of the PWM signals from the VM167 (as we already are using it for other functions in the kiosk).
However the PWM frequency is too high for the servo motor.
Is there a special command or a custom firmware that would reduce the PWM frequency to 50Hz.

thanks Voytek


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PostPosted: Fri Mar 17, 2017 6:47 am 
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Joined: Mon Dec 11, 2006 12:03 pm
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I'm sorry, the lowest PWM frequency is 2929.68Hz.
There is no option in the microcontroller to get lower PWM frequency with the current clock frequency.


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PostPosted: Sun Mar 19, 2017 10:01 pm 
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Thank you VEL255,

I was hoping there was an option of using an existing (or spare) internal timer and have an interrupt generating the PWM as it is such a low frequency.

Thanks again
Voytek


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PostPosted: Mon Mar 20, 2017 7:09 pm 
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Thank you for the suggestion.
For copyright reasons Velleman never releases source code or the firmware files.
I'm sorry, releasing the custom firmware is not possible.


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