Help Building Rube Goldberg Machine

[bobm866]

Hi i need help making my rube goldberg machine. It needs to use an Analogue Multimeter to determine how much water is in a 5 quart pail of ice cream (any amount of water)
The things it needs to have in it is:
1. Needs to start by hitting record button on Digital Camera
2. 1 thing to fly 30 inches or more horizontally
3. needs to act like a roller coaster
4. Use Elastlic Ponetial Engery
5. Uses 2 Electric Motors
6. 1 heat engery with heat source
7. 1 light engery
8. 1 Magnet force
9. 1 pulley system
10. 1 30 inch upward vertical elevation change
Need 8 more steps
PLEASE HELP

 

[Averagesupernova]

Can you go over or under or are you limited to 18 steps no more and no less?

 

[bobm866]

It can be 20 steps no more than twenty any suggestions to how i can build this machine the dimensions are 30 inches wide, 36 inches tall and 40 inches long
Thanks

 

[FredGarvin]

Yeah. Take a look at the old board game "Mouse Trap."