Does HPWM affect PULSOUT?

Hey there,
I wonder if the HPWM signal affects somehow the PULSOUT command? I connected a servo and motors to a 16F876. The motors are driven by HPWM, the servo by PULSOUT. Now, if the motors turn faster (longer HPWM pulses), the servo moves a bit more clockwise. If the motors turn slower (shorter HPWM pulses) the servo moves more counterclockwise.

For everyones fun, here the application: A autonomous vacuum cleaner robot. At the end of the video you can see what I mean.

http://www.youtube.com/watch?v=uJ9svB5QiE8

It's in a prototype state. Next task will be the vacuum motor, the dust compartment and the brushmotor.

Hi,

There are no links beetween both ... so, the issue is elsewhere.

I would, @ first, suspect

1) your Pic Osc if you use the external RC mode ... ( voltage dependant ! )

2) your servo response versus supply voltage ...

3) some glitches here and there ... that disturb 2)

Alain

PS: I note the servo is out of its normal rotation range ... sooo, verify linearity/ signal at both travel ends ... as a function of supply voltage.