2.1 List of Functions

Table 1: List of all identified functions

SL.No	Functions from User Perspective	Functions from Designer perspective
1.	User commands for initiation	Accept the commands
		Display the output
		Confirm the commands
		Start the bot
2.	Select the desired pattern	Display the list of patterns
		Selection of standard patterns
		Indicate the pattern selected
3.	Draw the selected patterns	Place the paper before drawing
		Draw the pattern on the surface
4.	Handling of Pen/Marker	Hold the pen/markers
		Remove the pen/markers for different colors
		Change the marker after it's ink is empty
5.	Control and move the bot on the surface	Accepting the commands from the user
		Controlling the movement of marker
6.	Termination of process	Indicate completion of drawing
		Request for termination
		Accept the command
		Switch off the bot

2.2 Function Tree

Chart 1: Function Tree

2.3 Morphological Chart

Chart 2: Morphological Chart

Sl.No	Sub-Functions	Means 1	Means 2	Means 3	Means 4
1.	Accept Commands	LCD Screen with IR Remote	Wireless control	Voice commands	Touch Sensor
2.	Motion Control	Stepper Motor	DC Motor	Servo Motor	BLDC Motor
3.	Movement of Bot	Wheels	Linear Actuators and belt drive	Robotic Arm	Hybrid
4.	Hold the pen/markers	Mechanical Arm	Robotic Clamp	Edge Clamp
5.	Switch on/off	Push Button	SPST	Toggle Switch	IR Remote
6.	Display list of patterns	Mobile Apps	LCD Screen	LED lights	LED Screen
7.	Indicate Completion of drawing	LED Screen	Speaker	Buzzer	LED bulbs
8.	Pattern Drawing Mechanism	Linkage Mechanism	XY Plotter Mechanism	Gear and Chain Mechanism	Robotic arm Mechanism

2.4 Conceptual Designs

Concept 1:

Concept 2:

Concept 3:

Concept 4:

Concept Selection

2.5 Weightage of Each Objective

Table 2: Weightage given to each objective identified in problem definition

Sl.no	Objectives	Weightage
1.	Bot should be semi-automatic	9
2.	Pattern drawn should be permanent	3
3.	Bot should be portable	7
4.	Bot should be able to draw all standard shapes	8
5.	Bot should draw designs on a sheet of paper	2
6.	Bot should be user-friendly	6

2.6 PUGH Chart

Chart 2: PUGH Chart

2.7 Justification for the Scores Given

Table 3: Justification for the scores given in the pugh chart with respect to the objectives and concepts

SL.No	Concept number	Objective	Score Allocated	Justification for the score
1.	Concept 1	Bot should be semi-automatic	Datum	---------------------------------------------------------------
		Pattern drawn should be permanent	Datum	---------------------------------------------------------------
		Bot should be portable	Datum	---------------------------------------------------------------
		Bot should be able to draw all standard shapes	Datum	---------------------------------------------------------------
		Bot should draw designs on a sheet of paper	Datum	---------------------------------------------------------------
		Bot should be user-friendly	Datum	---------------------------------------------------------------
2.	Concept 2	Bot should be semi-automatic	+9	Bot is semi automatic and it receives orders through voice messages
		Pattern drawn should be permanent	0	By using the mechanical arm the pen is well gripped and is permanent
		Bot should be portable	-7	there is no proper means for portability
		Bot should be able to draw all standard shapes	-8	Due to less mobility bot may be able to draw only few shapes.
		Bot should draw designs on a sheet of paper	+2	A sheet of paper can be placed and the bot can perform the required operations
		Bot should be user-friendly	+6	Bot has a simple structure and is easy to use
3.	Concept 3	Bot should be semi-automatic	+18	There is a wireless control by means of ir remote and also programming, hence the bot is semi-automatic
		Pattern drawn should be permanent	0	By means of permanent markers that can easily be held by the clamp
		Bot should be portable	0	The bot is portable
		Bot should be able to draw all standard shapes	+8	Because of programming we can give input and hence the bot can draw various standard shapes
		Bot should draw designs on a sheet of paper	+2	A sheet of paper is placed below the marker and hence pattern can be drawn
		Bot should be user-friendly	+6	As the bot is not that complex, it is user-friendly
4.	Concept 4	Bot should be semi-automatic	+18	By wireless control and by means of a program and software, the bot has manual as well as automate control while drawing patterns
		Pattern drawn should be permanent	0	By means of permanent markers that can easily be held by the edge clamp and has flexible motion
		Bot should be portable	-14	An issue of portability due to complex circuit may prove to be a problem while transporting or carrying
		Bot should be able to draw all standard shapes	+8	By means of the code and software, we can install the standard shapes and the mechanism will be able to comply to the command and draw the pattern
		Bot should draw designs on a sheet of paper	+2	A sheet of paper can be placed and the bot can perform the required operations on the medium comfortably
		Bot should be user-friendly	-6	The complex design and implementation may prove to be an issue for the user and may not be used for its defined purpose

2.8 Selected Design

Concept 3: