Hi Mega,

nice video of your RP6!

LEDs and light sensors are a good idea! It's an easy way to learn programming with some additional hardware.
... I don't want to use to microcontroller to generate the servo pulses.
Why not? If you only want to attach 1 or 2 servos, you could do this with the RP6 Control M32 board.
But if you want to do it seperately, a servo controller is a good alternative.

Greetings Dirk