6.1 3D Modelling

-> Pranav Bhat

Pranav 3d.zip

-> Faheem

Faheem 3d.zip

-> Ankith C

Ankith 3d.zip

-> Mahendra

Mahendra 3d.zip

6.2 Circuit Diagram

-> Pranav

-> Faheem

-> Ankith

-> Mahendra

-> FINAL CIRCUIT DIAGRAM

6.3 Bill of Materials

6.4 Algorithm

6.5 Motor Sizing

For DC Motor (conveyor belt)

• Total Weight = 0.25 kg
• Co-efficient of friction between Acrylic sheet and Foam board = 0.7
• Total Frictional Force = 0.25 x 0.7 = 0.175 kg
• Radius of action = 1 cm
• Torque generated = 0.175 kg-cm
• Torque after Factor of Safety = 0.175 x 1.5 = 0.2625 kg-cm

Therefore, selected motor for above calculated torque requirement is 30 rpm motor.

For Servo Motor (for seed and soil dispensing)

• Total Weight = 0.1 kg
• Total Force = 0.1 kg
• Radius of action = 1 cm
• Torque generated = 0.1 kg-cm
• Torque after Factor of Safety = 0.1 x 1.5 = 0.15 kg-cm

Therefore, the selected motor for the above-calculated torque requirement is Tower SG90 motor.

6.7 Adapter Sizing

For DC Motor (conveyor belt)

• Voltage required to run DC Motor = 12V
• Current drawn by motor at full load = 300 mA
• Number of DC Motors = 1
• Total current required = 1 * 300 = 300 mA
• Current required after factor of safety of 1.2 = 1.2 * 300 = 360 mA

Therefore Adapter required for DC Motor should be rated 12V, 1A.

For Servo Motor (for seed and soil dispensing)

• Voltage required for servo motor = 5V
• Stall current of Servo motor = 660 mA
• Number of Servo motors = 4
• Total current required = 4 * 660 = 2640 mA
• Current required after factor of safety of 1.2 = 1.2 * 2640 = 3168 mA

Therefore Adapter required for Servo Motor should be rated 5V, 5A.

6.6 3D MODEL

FINAL ASSEMBLY ZIP FILE