In our term project, we are asked to design a car which can move in 5 directions, forward-left-right-clockwise-c.clockwise, and for those movements we are restricted to use only 3 different sinusoidal signals which must be obtained in our design. so I considered that instead of creating 3 different sinusodial oscillator circuits, I will construct a single square wave generator and then, using 3 different band-pass filters with high quality factors I will obtain the desired signals to control the motors in car. What do you think about this idea? Is this efficient or anyone tried it, would it work? If youre interested, I can post our term project specifications' document. Thanks already