week 10

applications and implications

Propose a final project masterpiece that integrates the range of units covered, answering:

CAD Design

01. What will it do?

Role of composter using EM solution is to make household food waste compost.

WHAT is EM?

EM is a people-friendly and environmentally safe product that achieves synergistic effects by combining beneficial microorganisms which exist in nature, such as lactic acid bacteria, yeast and phototrophic bacteria. (Reference site)

EM's role

  • Deodorization of food
  • Help compost food waste.
  • Activate beneficial microorganisms present in the soil.

    • Mix the soil, food waste and microorganisms evenly using a pedal. In addition, the temperature is raised using a heater so that microorganisms can decompose food waste well.

    02. Who's done what beforehand?

    In Fab Academy 2017, Siddharth Arya of Fab lab CEPT (India) had made a composter. (Siddharth Arya's site)

    Differences between me and his project

  • Use microbes to decompose food waste.
  • Set the temperature at which microorganisms decompose.
  • Mix constantly so that the microorganisms can decompose quickly.

    • 03. What will you design?

    Internal Cylinder

  • Connction Part of Motor and Gear (The first thing to test is the timing belt and timing pulley.)
  • Mixing Paddle (3D Design for CNC)

    • Frame

  • Apearance Part (I will design the part the control box will occupy and button and panel place.)
  • Lid Part (Slide Lid or Something)
  • Support Part (For Internal Cylinder)

    • Input & Output Device

  • Sensor Board (Board with temperature sensor and soil moisture sensor)
  • Output Board (Control board with heater and motor)

    • 04. What materials and components will be used?

    05. Where will come from?

    06. How much will they cost?

    Components Materials Make Specifications Source Cost per unit Unit Qty Cost in KOR Cost in USD (Cost in USD (1,210 won=1USD)=1USD) Comments
    Internal Cylinder Stainless Steel indi. Stainless Steel Sheet (1T) FabLab inventory 30,000 Won 600mm x 600mm 1 30,000 Won $24.71 https://smartstore.naver.com/myian3249/products/3857495817
    Frame Plywood indi. Plywood (12T) FabLab inventory 80,000 Won 1200mm x 2400mm 1 80,000 Won $66.24
    PLA Sindoh PLA FabLab inventory 38,000 Won pack 1 38,000 Won $29.99 https://www.amazon.com/Sindoh-Filament-Compatible-millimeters-Diameter/dp/B01HD9A8GG
    Input Devices Soil Moisture Sensor WINGONEER YL-69 FabLab inventory 11,500 Won piece 1 11,500 Won $9.50 https://www.amazon.com/WINGONEER%C2%AE-Hygrometer-Humidity-Detection-Arduino/dp/B01H6WK51I
    Temperature Sensor DFROBOT Waterproof DS18B20 FabLab inventory 8,000 Won piece 1 8,000 Won $6.59
    Distance Sensor YwRobot HC-SR04 FabLab inventory 2,500 Won piece 1 2,500 Won $2.06
    Output Devices Motor MotionKing 17HS8401 FabLab inventory 17,000 Won piece 1 17,000 Won $14.00
    Heater link cnc
    or
    FLD Heater    		 Silicon Heater Pad FabLab inventory 12,500 Won 300mm x 300mm 1 12,500 Won $10.40 https://ko.aliexpress.com/i/32591046539.html?spm=a2g12.12057483.0.0.4bc951e2B3pPhV
    or
    https://smartstore.naver.com/marketsharing/products/3011967095

    07. What parts and systems will be made?

    Internal Cylinder

  • Connction Part of Motor and Gear
  • Mixing Paddle

    • Frame

  • Apearance Part
  • Lid Part (Slide or Something)
  • Support Part (For Internal Cylinder)

    • Input & Output Device

  • Sensor Board
  • Output Board

    • 08. What processes will be used?

    Internal Cylinder

  • Welding Process (For Stainless Steel)
  • Metal cutting machine

    • Frame

  • ShopBot (CNC)
  • Laser Cutter
  • 3D Printer
  • Molding & Casting

    • Input & Output Device

  • Bantam (CNC)
  • Embedded Program
  • Soldering

    • Communications

  • Interface & Application

    • 09. What questions need to be answered?

    Internal Cylinder

  • How do you connect the paddle so that it doesn't leak

    --->The mixing part is made using aluminum. Do not leak water by welding.

  • Can the paddle be designed to be separated?

    --->First, make a product for testing, and then add the details.

    • Frame

  • What should be considered when designing frames?

    --->Consideration should be given to the space where the motor and gear enter. (Position of the control box)

    • Input Devices

  • What size LED panel should be used?

    --->Let's think after the control box part is designed

  • What will the led panel show?

    ---> Perhaps only the measurements of input sensors will be shown. Whether it is working will use a separate LED.

    • Output Device

  • What size motor do I need?

    --->I will try nema17 stepper motor first. And if I need more power, I should consider a larger motor.

  • What kind of gear is appropriate for my project? (Option : Belts or Chains)

    --->I will test first using the timing belt and timing pulley. And if they lack power, I can consider using a fan belt.

  • What kind of heater is appropriate for my project?

    --->I decided to use a silicone heater pad.

    • Communications

  • What features will be included in the interface application?

    --->If I have enough time to develop a project, I want to use app inventory using wifi.

    --->The first attempt is to communicate between the boards using I2C networking.

    • 10. How will it be evaluated?

    Internal Cylinder

  • Does not the Internal Cylinder leak?
  • Does the paddle inside mix the contents well?

    • Frame

  • Are the gears moving smoothly?

    • Input Devices

  • Is the distance sensor a good sensor to measure the amount of content?

    • Output Device

  • Does the motor with gear connected work smoothly?
  • Does the heater work well as it is programmed?
  • Is it strong enough to mix the contents?

    • Communications

  • Does the temperature-based heat system work well?
  • Does the panel connected to the motor work well?
  • Does the panel connected to the motor work well?
  • Does the sensor measure well on the LED panel?
  • Does App Inventor accurately show the measurements of sensors?

    • Project Plan