MOTOR SIZING:

Our model contains 8 cams,8 body cylinder ,8 spokes,8 square plates,1rod which rotates with the help of dc motor.

1. Our model contains 8 cams (foam board).

   • Volume of 1 cam=10.60425cm^3.

   • Volume of 8 cams =84.834cm^3.

2. Our model contains 8 body cylinders (foam board).

   • Volume of 1 cylinder=14.14cm^3.

   • Volume of 8 cylinders =113.112cm^3.

3. Our model contains 8 spokes(nylon).

   • Volume of 1 spoke =7.85cm^3.

   • Volume of 8 spokes =62.8cm^3.

4. Our model contains 8 square plates(acrylic).

   • Volume of 1 square plate=0.48cm^3.

   • Volume of 8 square plates =3.84cm^3.

5. Our model contains 1 rod(nylon).

   • Volume of 1 rod =5.65cm^3.

   • Volume of foam board =volume of cams + volume of body cylinder=197.946cm^3 .

   • Volume of nylon =volume of spoke + volume of rod =68.45cm^3.

   • Volume of acrylic sheet =volume of square plate=3.84cm^3.

   • Mass = density * volume.

   • Density of foam board=1 g/cm^3.

   • Density of nylon=1.14 g/cm^3.

   • Density of acrylic sheet=1.185 g/cm^3.

   • Mass of foam board = 197.946v g .

   • Mass of nylon = 79.402 g .

   • Mass of acrylic sheet = 4.5504 g .

   • Total mass=281.8984g.

   • Force involved is just the downward force (weight of the design/pattern)

   • Radius = 2.25cm.

   • F=mg=2.7636N.

   • T=F*r=6.2191Nm.

Here we require DC geared motor of 15 rpm.

BATTERY SIZING:

Number of dc motor used = 1

Load current used = 300mA

FoS=1.2

Required adapter is = 13001.2 = 360mA @12v = 0.5 A

Voltage rating	current rating
12	300

After applying FOS as 1.2

Voltage rating	Current rating
12	360

Therefore for our course project we are using

12 v , 0.5A Adapter