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RENDERS OF THE DESIGN 


  
 
 
 
 
MANUFACTURER ASSEMBLY DRAWINGS 
6 5 3
1
2
4
7
ITEM NO. PART MATERIAL QTY.
1 HEXAGONAL SPACER BRASS 3
2 INNER SPROCKET GEAR ALUMINIUM 1
3 OUTTER SPROCKET GEAR ALUMINIUM 1
4 COUPLING ALUMINIUM 1
5
SOCKET HEAD CAP 
SCREW M2.5X0.45 
10MM
STAINLESS 
STEEL 6
6 SOCKET HEAD CAP SCREW M4X0.7 12MM
STAINLESS 
STEEL 1
7 HEX SCOKET M2 3MM STAINLESS STEEL 1
TITLE
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SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
DRIVE SPROCKET GEAR ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
12/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
4 3
2
1
5
EXPLODED ISOMETIC VIEW SCALE 1:2
EXPLODED FRONT VIEW
SCALE 1 : 1
ITEM NO. PART MATERIAL QTY.
1 12V DC MOTOR VARIOUS 1
2 ROBOT CHASSIS ABS 1
3 SOCKET BUTTON HEAD CAP SCREW M3X0.5 5MM
STAINLESS 
STEEL 2
4 DRIVE GEAR ASSEMBLY VARIOUS 1
5 HEX SOCKET GRUB SCREW M2X0.4 3MM
STAINLESS 
STEEL 1
TITLE
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SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
DRIVE GEARS TO MOTOR ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
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NOTED OTHERWISE
SCALEMATL
VARIOUS
13/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
54
2
3
2
1
ISOMETRIC VIEW
EXPLODED ISOMETIC VIEW
ITEM NO. PART MATERIAL QTY.
1 SUSPENSION BRACKET
CAST 
ALUMINIUM 1
2 625ZZ BEARING STAINLESS STEEL 2
3 SUSPENSION WHEEL ABS PLASTIC 1
4 M5 1MM WASHER
STAINLESS 
STEEL 1
5 M5 NUT STAINLESS STEEL 1
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4VARIOUS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
SUSPENSION BRACKET TO WHEEL ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:1
12/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
65
2
4
5
3
1
EXPLODED ISOMETIC VIEW
ITEM NO. PART MATERIAL QTY.
1 TORSION SPRING HARDENED STEEL 1
2 SUSPENSION BRACKET CAST ALUMINIUM 1
3 SUSPENSION SHAFT CAST ALUMINIUM 1
4 625ZZ BEARING STAINLESS STEEL 1
5 M5 1MM WASHER STAINLESS STEEL 2
6 M5 NUT STAINLESS STEEL 1
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4VARIOUS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
SUSPENSION SHAFT TO BRACKET ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
12/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
A2
1
EXPLODED ISOMETIC VIEW
DETAIL A
SCALE 2 : 1
3
4
3
4
3
5
6
4
3
4
PART NO. PART MATERIAL QTY.
1 ROBOT CHASSIS ABS 1
2 SUSPENSION ASSEMBLY VARIOUS 1
3 M2 WASHER STAINLESS STEEL 4
4 M2 NUT STAINLESS STEEL 4
5 M4 WASHER STAINLESS STEEL 1
6 M4 NUT STAINLESS STEEL 1
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4VARIOUS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
SUSPENSION ASSEMBLY TO CHASSIS
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:2
14/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
1
2
3
3
4
3
5
6
5
3
7
EXPLODED ISOMETRIC VIEW
PART NO. PART MATERIAL QTY.
1 ROBOT CHASSIS ABS 1
2 BOLT M5 42MM STAINLESS STEEL 1
3 M5 WASHER STAINLESS STEEL 4
4 SEPARATOR ABS 1
5 625ZZ BEARING STAINLESS STEEL 2
6 BACK WHEEL ABS 1
7 M5 NUT STAINLESS STEEL 1
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4VARIOUS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
BACK WHEEL ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:2
14/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
  
 
 
 
 
CLIENT ASSEMBLY DRAWINGS 
42
4
1
3
EXPLODED ISOMETRIC VIEWPART NO. PART MATERIAL QTY.
1 ROBOT CHASSIS ABS 1
2 M2X0.4 3MM STAINLESS STEEL 4
3 ARDUINO UNO VARIOUS 1
4 HC-SR04 SENSOR VARIOUS 2
TITLE
TOLERANCE UNLESS 
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SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
ELECTRONICS ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:2
15/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
EXPLODED ISOMETRIC VIEW
?
2
1
PART NO. PART MATERIAL QTY.
1 ROBOT CHASSIS ABS 1
2 ROBOT LID ABS 1
3 HEX SOCKET M2 6MM STAINLES STEEL 2
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4VARIOUS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
LID TO CHASSIS ASSEMBLY
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:2
15/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
  
 
 
 
 
ENGINEERING DRAWINGS 
5.50 18
16 5
 
34
 
 
36
 
 
40
.5
0 
 
42
 
FRONT VIEW
 1
1.
50
 
 1
0.
75
  9
.2
5  
8.
50
  7
.5
0 
 R0.75 
 R1 
 1
3 
 5.25 
TOP VIEW
ISOMETRIC VIEW
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ABS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
BACK WHEEL
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 4
9 
 4
6 
 2
4 
 1
7 
 40 
 52 
 64  22 
 18 
 1
7 
 8
 
 3.400 THRU 
 2 THRU ALL 
 4 THRU ALL 
 6 THRU ALL 
 R10 
 R1 
 6
 
SIDE VIEW
 200 
 194 
 41.06  88.05 
 93.12 
 5
2 
 4
5 
 1
26
 
 1
20
 
 1
14
 
 8
2.
13
 
 73 
 77 
 166 
 162 
 123 
 119 
 3
0 
 3
4 
 75.54 
 78.54 
 1
2 
 R3 
 8 
TOP VIEW
 52 
 3
0 
 5 
 6 
 21 
 R0.70 
 R8 
FRONT VIEW
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ABS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
ROBOT CHASSIS
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:2
15/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 28.50 
 20 
 0
.6
8  
3.
32
 
 
4 
 4
.8
2 
 
8 
R2 8.50
8 THRU
 2
.6
5 FRONT ISOMETRIC VIEW
BACK ISOMETRIC VIEW
 28.50 
 20 
 7
.1
9 
 3
.5
0 
 
8 
 3.30  9
 4
.8
2 
 R4 
BACK VIEWFRONT VIEW TOP VIEW
BOTTOM VIEW
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ALUMINIUM
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
COUPLING
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 4
3 
 3 
3.40 THRU
 3
.8
7 
R4 THRU
 0.72 
 2
.0
3 
 R0.50 
 R1 
 R18.50 
 3.50 
TOP VIEW ISOMETRIC VIEWSIDE VIEW
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ALUMINIUM
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
INNER GEAR
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 4
3 
 3 
2 x  4.50 THRU
3 x  2.90 THRU
 R18.50 
 R0.50 
 R1 
 3
.8
9 
 1.69 
 3
 
FRONT VIEW ISOMETRIC VIEWSIDE VIEW
ROMAN TAKHOVSKIY
ALUMINIUM
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
OUTER GEAR
DIMENSION IN
 MILLIMETRES
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 3.320 
 3 
5.50 0.25
 3
.1
8 
 2
.7
5 
TOP VIEW
 1.59 
 1
6.
50
 
 6.36 
 3.18 
SIDE VIEW
ISOMETRIC VIEW
ROMAN TAKHOVSKIY
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4BRASS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
HEXAGONAL SPACER
DIMENSION IN
 MILLIMETRES
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
5:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 3
 
FRONT VIEW
 200 
 194 
 176 
 1
26
 
 1
20
 
 1
02
 
 75 
 1
23
.5
0 
 1
23
.5
0 
 37 
 2.400 THRU 
TOP VIEW
ISOMETRIC VIEW
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ABS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
ROBOT LID
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:2
15/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
5 7
 9 
 7
 
 2 
 4.50 
ISOMETRIC VIEW
TOP VIEW
FRONT VIEW
ROMAN TAKHOVSKIY
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4VARIOUS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
SEPARATOR
DIMENSION IN
 MILLIMETRES
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
5:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
ISOMETRIC VIEW
 5 R8 
 R8 
 9 
 R2.50 
 5 THRU  R12 
 
18
 
FRONT VIEW
 34.86 
 3
5 
 2
7 
 5
 
TOP VIEW
 30 
 29 
 4
9.
57
 
 8
  
9 
M5x0.8 THREAD 5MM
SIDE VIEW
1.6 TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ALUMINIUM
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
SUSPENSION BRACKET
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
1:1
15/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 28 
 15 
 17 
 25 
 
2 
 
4 
 
5 
 1
5.
80
 
 1
6.
20
 
4x M2X0.4 THREAD 2MM
M5X0.8 THREAD 5MM
M4X0.7 THREAD 3MM
 R4 
 R8 
 0.400 
 2
4 
 24 
1.6 TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ALUMINIUM
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
SUSPENSION SHAFT
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
15/11/21
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
5.50 13
5.50 18
16 5
FRONT VIEW
 2
3  R1 
 R0.75 
 1
7 
 1
3 
 32 
 24 
ISOMETRIC VIEW
TOP VIEW
TITLE
TOLERANCE UNLESS 
NOTED OTHERWISE DO NOT 
SCALE A4ABS
SCHOOL OF MECHANICAL AND MANUFACTURING ENGINEERING - UNSW
DRAWN BY
BEARING WHEEL
DIMENSION IN
 MILLIMETRES
ROMAN TAKHOVSKIY
SURFACE FINISH UNLESS 
NOTED OTHERWISE
SCALEMATL
2:1
13/11/2021
DATE
SOLIDWORKS Educational Product. For Instructional Use Only.
 | Samaa Ahmad 
 
Page | 1  
 
R2R Electrical Components Breakdown 
 
Figure 1: Electrical components TinkerCAD simulation 
As shown in the figure above, there are three main electrical components of this robot: (1) power supply, (2) sensors, 
and (3) motors. 
1. DC Power supply: This robotic circuit uses a power pack of eight AA batteries to supply power to the motors 
since the motors operate on 12V. 
 
2. Sensors: There are two HC-SR04 ultrasonic sensors in this robotic circuit, one at the front and one at the back of 
the robot. These sensors, connected to the Arduino board, detect objects in the robot’s path of motion and return 
reading of their distances back to the operator by printing it on a serial monitor.  
Pin of the sensor(s) Connection Function  
VCC 5V pin of Arduino Uno Provides power supply for HC-SR04 Ultrasonic distance sensor 
Trig Digital output of Arduino Uno Triggers the ultrasonic sound pules. 
Echo Digital output of Arduino Uno Pin produces a pulse when the reflected signal is received. 
GND GND of Arduino board Connects the sensors to common ground of the circuit 
Table 1: Ultrasonic sensor connection to Arduino Uno pins 
 | Samaa Ahmad 
 
Page | 2  
 
3. Motors: The robot uses two 12V DC motors to support its movement. The DC motors are interfaced to an 
Arduino Uno through a motor driver. The motor driver is a controller that uses an H-Bridge to easily control 
the direction and speed of DC motors. The connections to the pins are shown in the table below. 
Pin of the motor driver Connection  Function 
Power 1 5V of Arduino Uno Drives internal logic circuitry of the Arduino Uno. 
GND pins on both sides GND of Arduino Uno Form a common ground connection for the circuit 
Output 1 Terminal 1 of the first DC motor Provides input for the first motor through Arduino 
Output 2 Terminal 2 of the first DC motor Provides input for the first motor through Arduino 
Output 3 Terminal 1 of the second DC motor Provides input for the second motor through Arduino 
Output 4 Terminal 2 of the second DC motor Provides input for the second motor through Arduino 
Input 1 Digital output of Arduino  Controls the spinning direction of first motor. 
Input 2 Digital output of Arduino Controls the spinning direction of first motor. 
Input 3 Digital output of Arduino Controls the spinning direction of second motor. 
Input 4 Digital output of Arduino Controls the spinning direction of second motor. 
Enable 1 & 2 5V of Arduino Uno Controls the starting, stopping and speed of first motor. 
Enable 3 & 4 5V of Arduino Uno Controls the starting, stopping and speed of second motor. 
Power 2 AA battery power pack Connects Arduino to external power supply required to drive 
motors. 
Table 2: Motor connection to Arduino Uno pins