e) Motor and Battery sizing of the system

Power supply

sl.no	components	Operating voltage	current requirement
1	DC geared motor	12 V	300 mA
2	servo motor	5 V	700 mA
3	IR Sensor	5 V	40 mA
4	Arduino Uno	5 V	100 mA

• At 12 V current required = 300 mA

• Factor of safety = 1.2

• Therefore, Total current required = 300*1.2 = 360 mA

• At 5 V current required = 880 mA

• Factor of safety = 1.2

• Therefore, Total current required = 880*1.2 = 1056 mA

Motor Sizing

sl.no	components	quantity	size
1	Servo motor(SG90)	2	19 g
2	Acrylic Sheet	5	470 g
3	L Clamp	2	200 g
4	Arduino Uno	1	25 g
5	Sticks	2	50 g
			Total=763 g

1. DC Motor

• F = m*g
• F = 0.763*9.8 = 7.47 N = 0.763 kg
• T = F*r
• T = 0.763*2 = 1.526
• Factor of safety = 1.2
• Therefore 1.526*1.2 = 1.83
• We are using 60 rpm DC geared motor

2. Servo motor

• F = m*g
• F = 69*9.8 = 676.2 N
• T = F*r
• T = 676.2210^-3 = 1.352

Battery Sizing

1. Servo motor

• Battery capacity = T * I * number of motors = 1 * 650 * 2 = 1300 mA
• Factor of safety = 1.2
• Therefore, Total current required = 1300 * 1.2 = 1056 mA

2. DC Motor

• Battery capacity = time * current * number of motors = 1 * 300 * 1 = 300 mA
• Factor of safety = 1.2
• Therefore, Total current required = 300 * 1.2 = 360 mA