Yes, it has to be a piggy bank, but it doesn’t have to be a pig! Piggy banks come in all shapes and sizes..
You can even create your own piggy bank. As long as money inserts into the piggy bank, you’re good to go!
Either or both! It can be any currency. You can make your own money. It just has to get into the bank.
It is up to you to interpret the task in a way that will impress the judges.
A person may be part of the machine, but must be counted as part of the machine volume as long as they don’t extend or move outside the maximum length, width, or height restrictions during competition. A persons volume should be considered 2 foot by 2 foot by their individual height and added to the physical machine volume. This total volume must not exceed the 300 cubic feet stated in the rule book. In addition, a person who is included as part of the machine, may not interfere with the machine’s operation once the machine has started. Any touches, blowing, sneezing, or interaction that causes the machine to be manipulated may be considered an intervention by the referees.
The person needs to be added to the machine volume (regardless of whether they are standing on the floor or standing on the machine).
Any steps that occur after the task has been completed do not count. However, you are free to have additional steps after the task has been completed, even though they do not count toward your total number of steps.
Repeatability is how consistently a machine runs across multiple runs. A machine that works perfectly every time is ideal, but a machine that fails in the same place each time it runs is much easier to debug than a machine that fails in different places every time.
Reliability is how well a machine runs in a single run. For example, a single machine run with no interventions is scored higher than a single machine run with 2 interventions.
Yes, as long as they are not hazardous. For example, fog is allowed but steam that is hot enough to burn someone is not allowed.
Any physical touching or action to continue the operation of the machine through human interaction after the machine begins its Contest run.
Example: Your machine stops because one step does not trigger another. A team member interacts with the machine through a physical touch or other device to trigger any steps that follow.
A step in the machine is a transfer of energy from one action to another action. Identical transfers of energy in succession should be counted as 1 step.
Example: A sequence of dominos hitting each other should be counted as 1 step. Counting 100 dominoes as 100 steps is repetitive and not in the spirit of Rube Goldberg.
No — only one linear sequence of steps can be counted. Branching steps are not advised as they make machines hard to follow.