Quote:
Originally Posted by Generalx5
I would be switching from (Source 1, Sink 2) to (Sink1 , Source 2) back and forth. Isn't that bad for the motor controller? I would be switching high currents at high frequencies....  |
Nope, no problem at all.
At high frequencies (over a few hundred Hz - the 18201 is rated up to a few tens of kHz) the motor sees this as an average voltage, thus effecting motor speed control.
In other words, if you have full forward 75% of the time, and full reverse 25% of the time, the motor is seeing (75 - 25 =) 50% forward. No harm to the motor or the chip.
However, converting R/C PWM to the EE's PWM (which this chip needs), is easy but needs to be done. See
Here for one example, or get an NE544N or some other servo amplifier.
Don