Some input devices, like MIDI, deliver analog input only. Even if it has only 2 states: On/Off (1/0). MIDI buttons are an example. This video shows how to use them.
griptools.io has build-in CINEMA 4D support. This video shows how to use 3 MIDI input channels to control the rotation of a C4D "Cube" object.
The advanced griptools.io plugin for C4D can send feedback, so you can use C4D as a superb input device!
Design the motion and control 3 servos with the Step Sequencer node.
In the first Step Sequencer tutorial we build a little "industrial robot" and created the motion for 3 servo motors. Now we are going to use this motion to control a virtual robot in C4D.