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LP - Let's Go Fishing

LP - Let's Go Fishing

by aksuzuki diegohuyke mrorton | updated December 31, 2015

Dulce De Leche was tasked with recreating an element from the Let's Go Fishin' party game. It's composed of MIT Students Aya Suzuki ('18), Diego Huyke ('17) and Matthew Orton ('16).

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Let's Go Fishin' is a party game in which players attempt to hook in fish from a small rotating platform.

This is team Dulce De Leche's documentation for the recreation of the spinning platform mechanism.

January 12, 2015 at 12:32 PM
Created by diegohuyke
Comments (1)
Maybe put a bit more in about what the overall goal is with Let's Go Fishing. I think it'll help other people understand your project better.
almost 2 years ago

 

 

 

Project: We will build the rotating platform on the which the fish rest.  Essentially, it will be two different platforms: the upper one which will simply be a foam core circle with several circular holes and the lower one on which the fish will theoretically rest.  The bottom platform will contain bumps that bob the fish up and down.  For our project we will use balls to represent the movement of the fish.

Materials: Foam core, motor, arduino, small bouncy balls

Build process:  There are two modules which we need to build:

(1) The two foam core platforms

(2) Arduino controlled motor

Module (1) will be easy to finish using just foam core and circular foam core cutters.  Module (2) will require an arduino being connected to a motor and knowledge of how to program the movement.  

After all this is done, we would get everything together and use the super bouncy balls to prove it works.

The final product should be ready by Friday, 16 January.

January 12, 2015 at 12:48 PM
Created by diegohuyke
Comments (1)
Nice and simple plan! This sounds very doable. I'd suggest putting something else into the electronics. It should be very easy to get this up and running, so it would be interesting to see how you might incorporate some sort of controls into this.
almost 2 years ago

The initial box-like design was finished during and after class on 14/1.  For the first build, the materials required will be:

20" x 20" acrylic sheet (needs to be slippery)

9" x 9" foam core sheet (needs to be lightweight)

Acrylic cement

3D printed shaft

3D printed cap

3D printed hump (x3)

Small DC motor

Arduino Uno

1.5" diameter wooden ball (x4)

There will need to be three different shapes laser cut into the acrylic, one of which needs to be produced four times.  The three pieces are:

Box lid

Lower platform

Box sides (x4)

They will all be solidified together using acrylic cement.  However, because the acrylic cement will make it impossible to work inside the box, the placement of the box lid should be the very last step.  In fact it should be able to work entirely without it.

Lab hours on Wednesday will be used to finish cutting out and constructing the box without the lid.  In addition, we will cut out the foam core upper platform but will not attach it yet.

3D printing will be the most involved step because the length of the shaft is difficult to determine and critical to get right.  Regardless, we wish to 3D print by Thursday.  If the measurements are correct, then attachment of these pieces is considerably straight forward.

Work on the motor can take place separately assuming the measurements for motor housing are already taken into account for the lower platform (they are).

Once these modules come together, it should be easy to get the entire system to work.  We will take notes and revisit the design depending on the outcome.

January 14, 2015 at 5:34 PM
Created by diegohuyke and aksuzuki
Comments (3)
What are you planning on making the fish out of?
almost 2 years ago
We were thinking of just using wooden spheres for the fish.
almost 2 years ago
Ok – If those are too heavy, you could also laser cut some fish out of foamcore (you can put two cross-sections at 90 degrees to make it "3D")
almost 2 years ago

Screenshot and video of CAD model of our project. 

Includes: 

  1. Top foam core panel where the "fish" will stay
  2. Top acrylic panel that will be attached to the foam core panel
  3. Bottom panel where the motor will be attached using screws
  4. 4 side panels that will hold all the panels together
  5. Assembly of all the acrylic panel.

Dulce De Leche text was etched onto one of the sides, but is not included in the CAD drawings.  The SolidWorks parts are included below.

January 15, 2015 at 12:23 PM
Created by aksuzuki and diegohuyke
Comments (1)
Nice - please upload your CAD files as "design files" for this step.
almost 2 years ago

We were able to use the motor provided by the Arduino kit to move the top foam core panel. We coded the motor so that it will move in random speeds at random time intervals.

January 15, 2015 at 12:32 PM
Created by aksuzuki
Comments (0)

The design of the 3D printed shaft was ultimately scrapped after realizing that it would be possible to replace it with a wooden block found in the lab.

This works just as well and does not require the use of the 3D printer.

 

January 16, 2015 at 10:18 AM
Created by diegohuyke
Comments (0)

Our final product of Let's Go Fishing included the following components: 

  1. Mechanical: 
    • Spinning platform (foam core)
    • Bottom platform where motor lay (acrylic)
    • 4 side panels to hold the two platforms (acrylic)
    • Top panel that held the spinning platform in place (acrylic)
    • 3 humps glued to bottom panel using epoxy, then taped over (3D-printed)
    • 3 fish of varying sizes made with blue foam that was taped over to increase smoothness
  2. Electrical: 
    • Arduino
    • Motor that was attached to bottom panel with 4 screws
    • Switch that turned motor on and off
    • Shaft that connected motor to top panel

January 16, 2015 at 12:37 PM
Created by mrorton and aksuzuki
Comments (0)

Short code loop for the arduino uno and servo.  The code has two random variables, one for servo speed, and one for how long the servo maintains that speed.

Design Files
January 17, 2015 at 10:12 PM
Created by mrorton and aksuzuki
Comments (0)

Videos of our working model, from the top and side. 

January 17, 2015 at 10:23 PM
Created by aksuzuki
Comments (0)

We experimented with different types of "fish," including wooden spheres, cotton balls, and foam. We noticed that some materials were either too light or too heavy for the top platform to spin continuously and ultimately decided to wrap blue painter's tape on spherical/cylindrical foam to make the fish.

January 17, 2015 at 10:24 PM
Created by aksuzuki
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We created a CAD model for the 1.5-inch-tall humps and 3D-printed them at PDL. We originally 3D-printed 4 humps that will push the fish up the platform but decided to use only 3 to make the fish movement more random. After experimenting with the fish, we decided to tape blue painter's tape on the humps to make the path of the fish smoother.

January 17, 2015 at 10:30 PM
Created by aksuzuki
Comments (0)

The code was modified to include the use of a switch to turn the motor on or off.  A function was written to listen for the switch being pushed.  The function wasn't working, so instead the function code was copied directly to the two locations where we want to listen for the switch to be hit.  This includes replacing the time delay with a for loop so that the switch can be used outside of the speed changes.

Design Files
January 18, 2015 at 12:28 PM
Created by mrorton
Comments (0)

Overall, I think our group was successful in recreating the rotating element of Let's Go Fishing. We were careful in measuring the height of the bottom platform in relation to the top, and were able to fit the laser-cut acrylic pieces together pretty well. If we could build Version 2.0 of our design, I would change the fish so that they would go over the humps smoother by either changing the material of the current fish or changing the shape so that it fits the top platform properly. I might also alter the fish so that they have mouths that open and close, much like the original game. 

I contributed to this team project by CAD-ing the top and bottom platforms and the humps. I also helped build the box, including deciding where to place the humps and the motor. 

For the final project, I would like to learn more about coding with the Arduino and using SolidWorks simulations to study how materials can affect the function of the product. Since we were only able to use foam core and acrylic for this lab project, it will be interesting to work with different materials and experiment with the interactions between them.

 

January 19, 2015 at 1:00 PM
Created by aksuzuki
Comments (0)

If we could improve on our current design, I would work mostly on remaking the fish.  Not adding the opening and closing feature, but improving the fit and friction it creates with the foam core platform.  That is, in its current state, its too unstable and sometimes causes the platform to pop out.  In addition, making a solid platform to mount the Arduino as well as the switch would make the entire construction more convenient to carry around.

 

I believe I contributed significantly in the CADding and designing for laser cut construction.  My previous UROP involved very similar prototyping techniques so I felt comfortable working in this style.  It's also one of the reasons we decided to move in the direction of an acrylic base.  However, I think my contributions to developing the code were much less.  This is something that I would really like to change.  I have some basic exposure to Arduino, but am not as comfortable using it as I would like.  For this reason I was only helpful in getting the motor to turn without much control really.

January 19, 2015 at 1:59 PM
Created by diegohuyke
Comments (2)
It's nice to hear you want to improve on your Arduino capabilities- have you been able to get anymore practice this week?
almost 2 years ago
Not last week, I've been really busy with working on the CADing. This week our team will be revisiting our code and working together to finish/fix and I'll get more exposure there.
almost 2 years ago

I was largely happy with our project.  There are a couple things I would like to do differently for the game if given the chance.  First, I would have liked to have had the time to create a design for the fish that was more reliable and had an open mouth.  Second, after watching the other groups present, I think it would have been need to mount the arduino and have a hole in the box specifically for a switch or button.

I was in charge of writing the arduino code and setting up the circuit.  I provided input for the physical shapes that went into the physical project design, but I did not CAD any parts for the project.  In the next project, I would like to work some on the electronics, but I would also like a chance to work with solidworks.  The only issue is that I don't know how I would get solidworks onto my personal computer.

January 20, 2015 at 12:46 AM
Created by mrorton
Comments (0)

January 21, 2015 at 11:40 AM
Created by diegohuyke
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January 21, 2015 at 11:40 AM
Created by diegohuyke
Comments (0)