@creative636, asdder, kickmekicku & caalgo
lvl20: prevent the ball hopper from gaining energy by placing the wind chimes on J8, I8, H7, G8, F5 and E6. enjoy music ;)
lvl19: change mirror direction: D7, F5 and E4, drill machine: D5, laser feeder: G6 and laser device: G7.
lvl 14: push bot: 9D, electric fan: F2/E2, power generator: F9/E9, solar panel: D8.