6.1 3D Modelling

6.2 Circuit Diagram

6.3 Flow Chart

6.4 Bill Of Materials

Sl no.	Type of components	Quantity	Description
1	Foam sheet	(20*20)cm of 10mm thickness	For base
		(15*15)cm of 8mm thickness	For upper part
		(35*5)cm of 8mm thickness	For trunk
2	Acrylic Sheet	2 sheets of (50cm*4cm) of 5mm thickness	For conveyor belt
		(10*2)cm of 5mm thickness	For hour hand
3	NEMA 17 Stepper motor	1	Hour and minute representation of clock(32 steps-11.25 degrees)
4	Arduino Mega 2560 Board	1	To run the program
5	Toggle Switch	1	To switch the clock ON/OFF
6	Easy Driver(stepper motor)	2	To connect the motors to the required power supply
7	Breadboard	1	To integrate the circuits
8	Connecting wires	20	To connect the various components
9	Adapter 12V	1	To supply the power
10	Dc motor of 60 rpm	1	For hour hand
11	L clamp	4	for connecting parts
12	screws	2(8mm)	Conveyor belt
		4(5mm)	Conveyor belt

6.5 Motor Sizing

For conveyor belt

• Volume of rubber belt=4900.2*=72 cubic cm
• Density of rubber=1.34 g per cubic cm
• Mass of belt=1.34*72=96.48g
• Volume of 2 screws=2pi(0.3)*(0.3)*6=3.393 cubic cm
• Density of screw(steel)=7.85 g per cubic cm
• Mass of screws=7.85*3.393=26.635g
• Total mass=96.48+26.635=122.635g
• Torque=0.122*45=5.49 kgcm
• 60 rpm dc motor with 12V adapter

For disc

• Volume of disc=pi1515*0.5=353.42 cubic cm
• Density of disc(foam sheet)=0.96 g per cubic cm
• Mass of disc=0.96*353.42=339.292 g
• Volume of hand=9.520.5=9.5 cubic cm
• Density of hand(acrylic)=1.18 g per cubic cm
• Mass of hand=9.5*1.18=11.21g
• Total mass=11.21+339.292=351.13
• Torque=0.351*9.5=3.335 kgcm
• 60 rpm 12V dc motor