Prompt

Today, we'll dive into the fascinating world of mechanical engineering by exploring various mechanisms made entirely from cardboard. From cams and linkages to pulleys and gears, we'll learn how these mechanisms work and how they can be applied in real-world applications.

Duration: ~2 hrs

Materials: Cardboard (various thicknesses), Scissors, Craft knives, Rulers, Glue, or tape Markers or pens

Instructions

1. Begin by familiarizing yourself with the different mechanisms we'll be exploring: cam & linkage, scissor lift, gears, pulley, lever, fan/expanding, waving/bending, curving, grabbing, and tentacle motion. 
2. Take some time to research and understand how each mechanism functions. 
3. Choose one mechanism that you find most intriguing or relevant to your interests to start with. Using the provided cardboard and craft tools, start prototyping each chosen mechanism. You may want to sketch out your designs first to visualize how each mechanism will work. 
4. Experiment with different shapes, sizes, and configurations to optimize the performance of your cardboard mechanisms. 
5. Test your prototypes to see how well they function. Make adjustments as needed to improve their efficiency and effectiveness.

Bonus Point

1. Make another mechanism, think about the difference, and try to combine your two mechanisms (e.g. one mechanism leads to the motion of the other one, one action to actuate both the mechanisms, etc.) 
2. In your group, consider incorporating your mechanism(s) into a drone: the connection, the scale, etc.

Deliverables

Take photos of your prototypes and post them on the Response Tab.

During this studio we redesigned the breath sensing flower to make it smaller and more manageable to hold while in use. The first iteration of the this studio’s flower had small petals that did not poke people in the face while they have the flower close to their face. In order for the smaller flower to close we had to redesign the center pin that connects to the petal frames. We moved the attachment points for the petals frames out closer to the petals, but this version of the flower was still not able to close completely.

For the second iteration of the flower we modified the center pin to allow the flower to close, and we also added a locking mechanism to hold the flower open or closed. We moved the attachment points on the center pin down and in towards its center. This helped the flower to close but the petal frames hit each other, causing some of the petals to overlap. The locking mechanism that we added to the flower is very simple. The center pin had two small divots in it, and the flower base had a spring loaded ball in it. As the center pin is pushed up or down, the ball snaps into the divot. The center pin can then be pushed passed the ball easily.

The third iteration of the flower added fillets to the pieces, as well as a cone to direct breath towards the breath sensor. For this iteration, we refined the design of the flower by adding fillets to the base and center pin. These help make the pieces stronger so that they will not break as easily in the wind. The cone that we created snaps onto the top of the center pin, and has space for the breath sensor to sit at the bottom. It directs peoples’ breath down to the sensor, and it also reduces noise that would be picked up by the sensor otherwise.

The current flower now has lighting, a transparent cone, and tapered petal frames. We added lighting to the flower by placing an LED upside-down in the breath cone. In order for the light to diffuse evenly throughout the entire flower, we printed the breath cone out of transparent filament. This not only allows light to pass through, but it glows when the flower is open. To make the flower close completely, we made the tops of the petal frames thinner so that they would not hit each other and cause the petals to overlap.