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Part name	Consumables	Specification	Quantity	Fabrication process if needed	Amount
Ardunio	-	Mega 2560	1		1200
Servo motor	-	-	7		1200
DC Motor	-	-	4		350
Chassis	Foam Sheet	30205 cm	2	Foam Cutting and blending	-
Ultrasonic sensor	-	HC-SR-04	1		100
Robotic Hand	Acrylic Sheet	1040.6 cm	4	Laser cutting and blending	-
Bluetooth Module	-	HC-05	1		150
Motor Drive	-	L298	1		200
Robotic gripper	-	-	1	Laser cutting and blending	-

1. Volume of Chasis = Length X Bredth X Height = 2 X (30 cm X 20 cm X 0.8 cm) = 960 cm
2. Density if Foam Sheet = 0.48 g/cm^3
3. Mass = VOlume X Density = 960 X 0.048 = 460.8 g = 0.4608 kg
4. Mass of Wheels = 4 x 75 g =300 g =0.300 kg
5. Total Mass = 0.4908 kg
6. Radius of the wheel = 4.5cm
7. Force = Total mass X gravitational Acceleration = 0.4908 X 9.8 = 4.80984 N
8. Torque = Force X Radius = 4.80984 X 0.45 = 2.16423 Ncm
9. Factor of safety(FOS)= 1.5
10. total Torque = 1.5 x 2.16423 = 3.246345 kgcm
11. According to this calculation the selected DC motor is 60 RPM 12V DC motor .

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Part Name	Consumables	Specification as per BOM	Quantity	Total Weight	Unit Of Embodied Energy	Total Embodied Energy
Chasis	Foam Board	0.06x0.20x0.10	1	0.0552	85MJ/KG	4.73
Wheel	Nylon	0.025x0.5	1	0.05	148MJ/KG	7.4
Robotic hand	Acrylic sheet	0.03x0.30x0.30	1	0.384	85MJ/KG	2.72
Robotic hand	Nut Bolts	0.04x0.4	4	0.81	153MJ/KG	1.836
Robotic hand	Nut Bolts	0.75x0.05	8	0.142	153MJ/KG	4.284
Robotic hand	Nut Bolts	0.60x0.06	8	0.87	134MJ/KG	1.116
Robotic hand	Nut Bolts	0.8x0.06	6	0.142	153MJ/KG	4.284
Robotic hand	Washer	0.02	14	-	-	-
Robotic hand	Hinges	0.01	2	0.03	153MJ/KG	4.59
Robotic hand	Screw	0.03x0.06	6	1.8	38.8MJ/KG