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67 Trail Mix Dispenser
Andrew Ma
Kanav Kariya
Mathew Jacob
Dongwei Shi design_document0.pdf
Trail Mix Dispenser

Original thread:

Sometimes you don't have time make a snack. Sometimes you just want trail mix.
We would like to build a fully customizable trail mix solution that’s completely controlled through your smartphone. The dispenser will be able to deliver a wide range of customizable and pre-made trail mix recipes in a bag, stapled and ready to go.
Individual ingredients would be stored in separate bins that would be brought to a dispensing position to be poured into a mixing bowl. Once the desired weights and proportions are achieved, the ingredients are then mixed for a more homogeneous mix. We are also considering mixing the ingredients simultaneously to eliminate the need for the mixer.
We would then pull a paper bag from a tray using a vacuum, inflate it, and fill it. We will then fold the top of the bag over and staple the bag to seal it.
This video is the inspiration for filling and sealing the bags:
We would have one container for each ingredient in a dispenser similar to the dispensers for cereals in dining halls. We plan on having 4 total such containers.
They will look similar to these:
Each container module would contain a stepper motor that would dispense the ingredient onto a bowl with a weight sensor. Once the appropriate weights have been reached the ingredients will be mixed with some sort of actuator. We will use small fins to ensure that we have smaller dispensing increments. We will also begin by dispensing quickly and slow down as we approach the target weight to minimize error. In addition we will set design constraints on the error by mass to ensure that the final product is of sufficient quality. Finally, the completed trail mix will be dropped into a bag and sealed by an electric stapler. We could also potentially incorporate weight sensors in the individual container modules and alert the user via the app when they are low on ingredients.
Overall we would require stepper motors with encoders, vacuum pumps, blower pumps, weight sensors, limit switches, an actuator to mix the ingredients, a microcontroller with wifi connectivity, a stepper motor driver, and a stapler.

Smart Frisbee

Ryan Moser, Blake Yerkes, James Younce

Smart Frisbee

Featured Project

The idea of this project would be to improve upon the 395 project ‘Smart Frisbee’ done by a group that included James Younce. The improvements would be to create a wristband with low power / short range RF capabilities that would be able to transmit a user ID to the frisbee, allowing the frisbee to know what player is holding it. Furthermore, the PCB from the 395 course would be used as a point of reference, but significantly redesigned in order to introduce the transceiver, a high accuracy GPS module, and any other parts that could be modified to decrease power consumption. The frisbee’s current sensors are a GPS module, and an MPU 6050, which houses an accelerometer and gyroscope.

The software of the system on the frisbee would be redesigned and optimized to record various statistics as well as improve gameplay tracking features for teams and individual players. These statistics could be player specific events such as the number of throws, number of catches, longest throw, fastest throw, most goals, etc.

The new hardware would improve the frisbee’s ability to properly moderate gameplay and improve “housekeeping”, such as ensuring that an interception by the other team in the end zone would not be counted as a score. Further improvements would be seen on the software side, as the frisbee in it’s current iteration will score as long as the frisbee was thrown over the endzone, and the only way to eliminate false goals is to press a button within a 10 second window after the goal.