2018 FHC MPC
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 | This article documents a design not compatible with current event rules. |
This is Forest Hills Central High School's Action Sequence List from MI State 2018. The device was constructed by users Tesel and Rezalis. Included are photos and detailed build/code information about each task.
The device scored 1st place at the MI State competition. The score was ~1505 points with a target time of 67 seconds. The device completed all tasks, measured at 30 by 30.5 by 31 cm, and ran for 105 seconds with a chemical timer of 90 seconds.
| Step # | Action Description | Task # | Points |
|---|---|---|---|
| 1 | Magnet is pulled away from side of device. Hex nut drops onto 1st class lever. | Start | 100 |
| 2 | 1st class lever is attached to 2nd class lever, which is attached to 3rd class lever. 3rd class lever strikes microswitch. | 9 | 50 |
| 3 | Microswitch triggers arduino, which powers electromagnet. | 12 | 50 |
| 4 | Hall effect sensor detects magnetic field and sends data to arduino, which powers G12 halogen bulb for 1 second. Halogen bulb produces heat (exothermic) and light, which activates a photocell. | 3 | 50 |
| 5 | Photocell sends output data to arduino, which powers an LED for 1 second. LED produces light, which activates a different photocell. | 6 | 50 |
| 6 | Photocell sends output data to arduino, which powers an infrared LED with a pulsing 34 kHz signal. IR beam transmits signal to IR sensor over 20 cm away. | 5 | 50 |
| 7 | Data from IR sensor triggers arduino, which powers motor. Motor winds a string through a pulley system with IMA 0.5. Pulley system lifts a 500g mass, which triggers a microswitch after travelling 10 cm. | 8 | 50 |
| 8 | Microswitch triggers arduino, which powers another motor. Motor winds a string through a pulley system with IMA 7. Pulley system lifts another 500g mass, which triggers another microswitch after travelling 10 cm. | 7 | 50 |
| 9 | Microswitch triggers arduino, which powers a servo. Servo pushes an unmodified US quarter airborne off a ledge. Quarter strikes a piece of aluminum foil. | 10 | 50 |
| 10 | Aluminum foil connects with another piece of foil, completing a circuit. Completed circuit triggers arduino, which powers 40W electric heater inside ¼” compression fitting. Gas inside the fitting expands due to the increase in temperature, forcing water out of a capillary tube. Water drops onto a water sensor. | 11 | 50 |
| 11 | Water sensor sends output data to arduino, which powers servo. Servo pours a container of ice slush into a different container. Ice slush begins to melt, absorbing energy from a temperature sensor. Temperature sensor triggers arduino due to the reduction in temperature. | 2 | 50 |
| 12 | Arduino powers servo, which flips a sealed container and allows alka seltzer tablet to fall into water. | ||
| 13 | The alka seltzer tablet dissolves in the water, allowing citric acid and sodium bicarbonate to react. The reaction produces carbon dioxide, which slowly inflates a balloon. Once the balloon is inflated, it strikes a piece of aluminum foil. | 1 | 50 |
| 14 | Aluminum foil connects with another piece of foil, completing a circuit. Completed circuit triggers arduino, which powers a pump. Pump adds water to a closed container, which completes an electric circuit between two wires. | 4 | 50 |
| 15 | Completed circuit triggers a speaker to play the message “The End”. | Final | 250 |
Articles in this series
The following is a list of pages pertaining to Mission Possible for Division C. Some of these pages may contain outdated information.
- Main Article
- Documented Devices
- Useful Components
- Year-Specific Information