[Gdeaver]

Thats why a microcontroller is needed. It can time the incoming hobby type PWM pulse and set up the hardware Fixed requency variable duty PWM. The micro also can monitor the status and current draw. Also, the micro could get it's commands by a SPI, I2c or async serial port. Take it one step further and add a PID control to the speed controller. The micro could also red sensors for velocity ( encoder or gear tooth sensor), a POT or non-contact absolute position sensor. To design an inteligent motor controler gets a little complicated.