8. Moulding and casting¶

molding¶

“This week, I learned how to make molds and what machines should be used to give me the desired result First we did the design using fusion 360 and I chose the design from Pinterest and it was the shape of the cat’s hand, so I followed the coordinates of the picture and reduced the size based on what was asked of us, it was not that complicated, a very simple and beautiful shape. I finished the design and then started digging in the mold using the monofab machine, and these were the coordinates required in our design.”

casting¶

Then I made the mixture for the mold and these are the steps I used

how to make the mixture¶

Mix exact ratio of 10 grams of Resin to 6 grams of Hardener. • Using the digital scale to messure the quantity. • Stir the mixture for 3 minutes. Pour the mixture and spread it over the project. • Working time 45 minutes after pouring the mixture. • Advised not to leave the mixture more than 10 minutes in mixing cups. Dries completely after 24hrs, and hardens after 48hrs

instructions¶

Make sure to keep away from kids. This product should be stored in a dry place. Preferably in the sealed original container, at temperatures between 20c &25c. Do not swallow. Wear face masks for pregnants when using the pruduct. Wear protective gloves when you use the product. If you swallowed the resin call a doctor immediately. In case the product somes in contact with eyes : rinse cautiously with water for several minutes. Caution it may cause an allergic skin reaction.

final project¶

Our project is a table that can rotate in all directions and has a light that works on sound, so whenever we clap, the color of the lights changes At first, we designed the table using the fusion 360 programs, and it was two tables. A fixed main table contains a storage drawer and a hideout for lighting, and the other table is movable and swivel. These are some of the steps that were taken during the design process.

how to make the table in fusion 360¶

On the toolbar, select Tables > Hole Table hole table icon.

The Table dialog displays.

In the Table dialog, make sure the Hole Table is selected as the Type.

In the canvas, select a drawing view to associate with the hole table and click to place the origin.

The empty hole table displays at the cursor.

Optionally, in the dialog, modify the Title.

In the dialog, select the Arrange option:

by Position: Holes are located and labeled according to their physical location to the origin. by Size: Holes are located and labeled according to their size from the smallest to largest. Optionally, select the preferred Origin Style.

Click to place the hole table on the sheet.

the custum table¶

The Custom Table custom table icon command creates a table with empty cells that you manually populate.

You place the table on the sheet, then adjust the table direction, text alignment, number of columns, and number of rows.

the part list¶

The Parts List parts list icon command creates a table that automatically populates cells with information about an assembly, storyboard, component, or sheet metal component reference. A Parts List is a table that itemizes the components in a design. Each row can include the following information about a component:

Item Qty Part Number Part Name Description Material Mass You select a view, select the structure, place the table on the sheet, then adjust the table direction and columns. Balloons are automatically added to associated views.

##tips Place a table on the bottom half of the sheet to flip the column labels to the bottom of the table. The numbered rows are ordered from bottom to top. Press the Shift key to lock or unlock the table flipping feature. Click to select the table, then drag the grey round grips to resize rows and columns. Select the table, then click and drag the blue arrow grip to break the table into multiple table sections, or to consolidate multiple sections into a single table section. The text size in a hole table matches the text height specified in Document Settings. When the text height is too large to fit in a hole table on a sheet, the text height may scale to a smaller size.

programming the led light¶

We programmed a light through a microcontroller and connected it to the laptop and programmed it through the Arduino program. I extracted some codes via the Internet to program the LED light on the sound and then program it on the light, so I extracted the colors through the color picker and put the coordinates in the code.

The values of LEDs could be set individually by you. Also, do not forget to set the sensitivity of the sound sensor. I adding some instructions on how to set the sensitivity of the sound sensor below. The third image shows the monitoring of the sound sensor values. By these values, the code is set when to react to the sound.

For many different projects, this can be used to build sound-reactive switches or to build a sound-reactive LED visualizer. This is why this sensor is popular among beginners as these are low power, low cost, rugged, and feature a wide sensing range that can be trimmed down to adjust the sensitivity.

This sensor has three pins, two of which are power pins leveled VCC and GND and the other two pins are analog and digital pins which are shown in the diagram above. It has an onboard power LED and a signal LED. The power LED turns on when power is applied to the board and the signal LED turns on when the circuit is triggered. This board also has a comparator Op-amp that is responsible for converting the incoming analog signal to digital signal. We also have a sensitivity adjustment potentiometer; with that, we can adjust the sensitivity of the device. Last, we have the condenser microphone that is used to detect the sound. All these together make the total Sound Sensor Module.