1. How to assemble the 3D printed chassis 🚀

1.1 Needed parts to be printed

• 1 ✖️ chassis
  
• 4 ✖️ motor mount
  
• 2 ✖️ encoder wheel
  
• 2 ✖️ mounting part
  
• 1 ✖️ sensor holder
  
• 2 ✖️ spacer
  
• 4 ✖️ sturt
  
• 1 ✖️ ultrasonic_holder

1.2 Assemble the QTR-8RC sensor holder

• Needed parts

• Assemble the mentioned parts

• Secure the sensor holder by using M3x30 and M3x25 bolts along with M3 nuts.

1.3 Mount the caster wheel to the chassis

• use four M4x8 bolts along with four M4 nuts and washers.

1.4 Mount the Arduino and the DC motor driver L298N

Materials:

• Arduino coupling nuts: M3X30
• Motor driver coupling nuts: M3X12
• Bolts: M3x8 (for coupling nuts)
• Bolts: M3x5 (for securing components)
• Metal washers

Install Coupling Nuts:

1. Attach M3x8 bolts through the chassis, securing coupling nuts.
2. Use washers and coupling nuts to fasten them tightly.

Mount DC Motor Driver (L298N):

1. Place metal washers for stability.
2. Position the motor driver on the coupling nuts.
3. Use M3x5 bolts to the Motor Driver.

Attach Arduino:

1. Set the Arduino board on the same coupling nuts.
2. Use M3x5 bolts to secure the arduino.

1.5 Mount the 2 battery holders to the chassis

• Attach the battery holders to the chassis using M3x8 bolts, securing them in place with M3 nuts and washers.

1.6 Mount mottors and wheels to the chassis

• Insert the planks designed to accommodate the DC motors into their respective slots, ensuring they are oriented to face the bottom of the robot and mount the motors and screw them with M3x30 bolts along with M3 nuts and washers.

1.7 Mount the encoders(LM393) to the chassis

• Secure the encoders using M3x14 bolts and M3 nuts and washers.

1.8 Mount the servo motor

• Secure the servo motor using M2x10 bolts and M2 nuts and washers.

1.9 Mount QTR sensor holder that was assembled earlier [1.2]

• Secure the sensor holder using M4x12 bolts and M4 nuts and washers.

1.10 Mount the ultrasonic sensor and the QTR sensor to the holders

• Secure the ultrasonic sensor holder using the screws in the servo motor package.

2. Final 360 view