How to translate an Arduino signal to the speed of a Blender made animation?

Hi, I made a respiration belt connected to an Arduino. I also have an animated bird made in Blender. The bird should change speed according to the signal from the respiration belt (so the speed of breathing). The signal from the respiration belt is visible in TouchDesigner trough serial. The bird is also in TD and is flying. Who knows how to connect both of these worlds? Thanks a lot!