5. CONCEPT EVALUATION AND PRODUCT ARCHITECTURE - R-Division-2022-2023-Odd/Repo-07 GitHub Wiki

1 . WEIGHTS OF THE OBJECTIVES

Objectives	Weights
Safety	7
music	9
Ease of use	9
Portability	9
Use of standard parts	7
Cost	4

2. PUGH CHART

Design Objectives	Weights	Design 1	Design 2	Design 3	Design 4
Safety	7	0	Datum	--	+
Ease of use	9	0	Datum	-	+
Portability	9	+	Datum	0	+
Use of standard parts	7	-	Datum	+	-
Cost	4	-	Datum	+	+
Score(+)		9		11	29
Score (-)		-11		-23	7
Total		-2	0	-12	22

3. JUSTIFICATION FOR THE SCORES GIVEN

As we have taken action Mechanism as datum because firstly it is a classical and original Mechanism of the piano it contains springs, hammer, and strings. We have taken objectives such as safety, music, ease of use, probability, standard parts, and cost. We will give more preference to music mainly followed by ease of use and use of standard parts.

So safety compared to the action mechanism, the spring Mechanism piano is safer as it doesn't contain any strings which can cut sometimes which will be harmful to Children as our piano is categorized as an interactive toy. It is easy to use as there is only input needed to be given by the user, probability is also not a matter of concern. The parts or components which we will be using are not of very good material or high quality, can be good but it will increase our budget. At last the cost, it should be cheap as will be falling in the toy category so it is also a challenge to make a precise product under less budget.

JUSTIFICATION- DESIGN 1

OBJECTIVES	SCORE ALLOCATED	JUSTIFICATION FOR THE SCORE
SAFETY	0	The hammerstring mechanism is almost similar to the datum which is action mechanism hence the safety score is allotted as 0
EASE OF USE	0	the ease of use of design 1 is also similar to that of datum
PORTABILITY	+	the hammer string is more easily portable as compared to datum
USE OF STANDARD PARTS	-	here the parts to be used would be not too standard parts as compared to the datum hence it gets a lower score as compared to datum
COST	-	since it involves more components as compared to the datum it is considered as less cost-effective

JUSTIFICATION- DESIGN 2

OBJECTIVES	SCORE ALLOCATED	JUSTIFICATION FOR THE SCORE
SAFETY	DATUM	AS REFERENCE
EASE OF USE	DATUM	AS REFERENCE
PORTABILITY	DATUM	AS REFERENCE
USE OF STANDARD PARTS	DATUM	AS REFERENCE
COST	DATUM	AS REFERENCE

JUSTIFICATION- DESIGN 3

OBJECTIVES	SCORE ALLOCATED	JUSTIFICATION FOR THE SCORE
SAFETY	--	the pedal mechanism does not consist of springs which does not allow it to come back immediately hence the to and fro motion of design 2 is dangerous, especially for kids
EASE OF USE	-	as the design doesn't consist of spring it would not be easy to use the mechanism and would require extra force to push the pedal
PORTABILITY	0	the portability of the pedal design is not a concern since it as easy as carrying or porting the datum
USE OF STANDARD PARTS	+	since the pedal requires a special flat keys for the working the use of standard parts is necessary
COST	+	since the pedal requires a special flat keys for the working the use of standard parts is necessary , hence the cost would rise linearly

JUSTIFICATION- DESIGN 4

OBJECTIVES	SCORE ALLOCATED	JUSTIFICATION FOR THE SCORE
SAFETY	-	the spring mechanism doesn't act similarly to that of the datum and there are the chances of popping out of spring hence the safety is given a - mark
EASE OF USE	--	the spring mechanism doesn't act similarly to that of the datum and the working of this design is not as easy to use as compared to datum
PORTABILITY	+	the spring mechanism is easily portable since it doesn't have more load as compared to the datum
USE OF STANDARD PARTS	0	the standard parts used are similar to that of the datum only difference is that this design uses springs
COST	++	since the use of standard parts is similar to that of the datum and it just slightly consists of more components the cost is given a ++

->Spring mechanism for our course project piano.

So the vision in building our piano is mainly on a spring mechanism with a sliding mechanism, So the piano will be working on engineering branches of mechanical, electric, mechatronics, and computer science engineering. The piano with input will be giving output tunes according to assisted tunes and music. We tend to make this piano aesthetic and acoustic, so we will be using the sliding mechanism to expose the underlying piano, it will act as a start for our piano, which is turning on the piano. So here is the detailed process, code, and mechanisms for the piano.

link-https://youtu.be/niiFx9eiCZk

Source-https://youtube.com/@Rahulkhanna24june

The Parts which we need are :

Arduino mega2560/nano
Speaker
Push Buttons
Jumper Cables
LEDs
Breadboard

Working- With the connections of the pushbutton to a breadboard and further connecting with Arduino, the speaker's positive side is given to Arduino's output and the negative side of the speaker is grounded. Jumper wires will act as connectors or mediators from the breadboard to Arduino.

Source-https://youtube.com/@Rahulkhanna24june

The Code- Before you can play your piano, you will need to obtain and install the Tone Arduino library if it is not already installed. This can be downloaded from Github here. If you do not know how to install third-party Arduino libraries in your version of the Arduino IDE, reference this guide on Arduino. cc. Attached below, you will find a zip file that contains the Arduino code for Arduino Piano. Download it and unzip it somewhere on your computer. Open Arduino_Piano. into the Arduino IDE and upload the code to your Arduino library if it is not already installed. This can be downloaded from Github here. If you do not know how to install third-party Arduino libraries in your version of the Arduino IDE, reference this guide on Arduino. cc. Attached below, you will find a zip file that contains the Arduino code for Arduino Piano. Download it and unzip it somewhere on your computer. Open Arduino_Piano. into the Arduino IDE and upload the code to your Arduino.

SELECTED DESIGN OF PIANO :

fishing poems for weddings

4. FUNCTION CLUSTERING

5. SUBSYSTEM CHART

SERIAL NO.	SUBSYSTEM
--> 1	INPUT UNIT
--> 2	PROCESS
--> 3	OUTPUT
--> 4	OPERATION

:  Interaction among the systems

Subsystem 1	Subsystem 2	Subsystem 3	Subsystem 4
Spatial	YES	NO	NO
Data	YES	YES	YES
Material	YES	YES	NO

Subsystem 2	Subsystem 1	Subsystem 3	Subsystem 4
Spatial	YES	YES	YES
Data	YES	YES	NO
Material	YES	YES	NO

Subsystem 3	Subsystem 1	Subsystem 2	Subsystem 4
Spatial	NO	YES	NO
Data	YES	YES	NO
Material	YES	YES	NO

Subsystem 4	Subsystem 1	Subsystem 2	Subsystem 3
Spatial	NO	NO	YES
Data	YES	NO	NO
Material	YES	NO	YES