This is my K'nex ball machine Andromeda in its latest state. After 4 years (I started building in october 2014) and about 95000 K'nex pieces later I decided to end the project back in december of 2017, due to lack of space and difficulties to make it run smoothly and without balls falling off all the time.
It runs on 10 12V motors and uses 19 lifts. Some sections use both types of balls while other sections use one type of ball only.
Here are some photos and the video of the final state of the machine and the process in general.
Enjoy the ride.
If you have questions, just tell me in the comment section below.