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   Graph below displays the final CAD drawing of ChromaScan Health prototype.

Physical Final Prototype

Design Solution – Requirement 1:

• Device design includes a placement for test strips 
• Test strips are placed on a drawer to be inserted into the device. 
• Test strip brand and medical condition tested will be selected on the screen
• Device design includes a placement for the screen

Design Solution – Requirement 2:

• Device design includes a placement for the screen to output the results to users

Design Solution – Requirement 3

• Device design includes a cone/ pyramid to focus the color sensor onto a specific color on the test strip
• It attaches to the color sensor, which is attached to the motor to move along the test strip to detect each color individually

Design Solution – Requirement 4

• Drawer was designed in a simple way so it can be easily sanitized.
• comes into contact with urine
• Short slots so it can be easily wiped

Design Solution – Requirement 5-6

• Device design allows powering through a USB cord 
• Device design also includes a placement for the microcontroller, color sensor, and motor 
• Device design includes a slot for SD card placement to store data

• The team presented at the Senior Project Presentation on May 1st, 2024 at the College of New Jersey.
• The team participated in the Celebration of Student Achievement (COSA) on April 30th, 2024 at the College of New Jersey.
• ChromaScan Health prototype was successfully finalized.
• The team performed validation and verification testing of every design requirement.
• The device is able to store data into a .txt file. The space for the SD card has been created in the prototype box.

• The power source of the final prototype was determine to be wall-powered rather than a battery to allow users unlimited usage of the prototype without having to change batteries every 30 minutes.

Requirement 1: Must take in information from user

Verification
Input test strip information into device screen and confirm it saves.
Pass/Fail	Pass

Validation
Survey users on how easy it was for them to input the test strips information.		Results
Acceptance criteria	9/10 positive surveys	10/10
Pass/ Fail		Pass

Requirement 2: Must return output/test strip reading

Verification
Test	Acceptance Criteria	Result	Pass/Fail
Screen size	> 4in x 7in	4in x 7in	Pass
Font size	> 6.75mm	8mm	Pass
Font Type	Courier	Courier	Pass

Validation
Acceptance criteria	9/10
User Interface	Pass
Display Results	Fail

Requirement 3: The device must detect color

Verification:

• Must pass 8 different colors out of the 10 that will be tested
• In order to pass each color the right value for each needs to be outputted at least 8 times out of the 10

Parameters	Correct results out of 10	Passing (Yes: 1, No: 0)
pH 5	8	1
pH 8.5	9	1
Leukocytes Negative	10	1
Leukocytes 125 cells/uL	9	1
Nitrite positive	7	0
Urobilinogen 128 umol/L	10	1
Protein Negative	10	1
Protein 20.0 g/L	8	1
Ketone 16.0 mmol/L	10	1
Ascorbate 0 mmol/L	10	1
	Total	9/10

Requirement 4: Must must have a power source – Passed

Requirement 5: Must be able to be sanitized

Verification
Test	Acceptance Criteria	Results	Pass/Fail
Test strip	Visually clean 10/10	10/10	Pass
Orange Juice	Visually clean 10/10	10/10	Pass

Validation
Acceptance criteria	9/10 Positive Scores
Easily cleaned	Pass
Visually clean	Pass

Requirement 6: Must meet electrical safety standards IEC 60601

Verification

	T1	T2	T3	T4	T5	T6	T7	T8	T9	T10	Avg.
Leakage current (uA)	80	20	70	50	40	30	40	20	30	20	40
Threshold: 100 uA	Pass	Pass	Pass	Pass	Pass	Pass	Pass	Pass	Pass	Pass	Pass

Requirement 7: Must have a data storage

Verification
Acceptance Criteria	Memory Space	Specification	Pass/Fail
> 4.5KB bytes	16GB	4.5KB	Pass

Validation
Acceptance criteria 9./10 positive scores		Results	Pass/ Fail
User Interface		10/10	Pass
Retrieve Results		9/10	Pass

• ChromaScan team had to opportunity to present at 50th Northeast Bioengineering Conference on April 5th at Stevens Institute of Technology.

• The circuitry of all powered components of the device have been completed.

Circuitry of ChromaScan powered components.

• ChromaScan team has finished the prototype and will start assembling all powered components soon. Likewise, This design counts with all the necessary spaces such as the battery holder, SD Card, drawer mechanism, etc…

Figure displays drawing mechanism and battery placement of the ChromaScan Prototype

ChromaScan Health team is currently working on the powered components of the device such as linear actuator, color sensor, and touch screen.

• Video below displays the movement of the linear actuator.

• The circuitry of the color sensor and linear actuator has been finalized. Likewise, the powered components are being operated with a battery. The touch screen circuitry will be added once internal algorithm is completed.

Figure displays batteries attach to a bread board as well jumping cables that connect Arduino nano to color sensor and linear actuator.

• The team is has also completed the first user interface requirement for the touch screen, and is currently working on the internal interface to output the results based on the color sensor values.

• All requirements have been updated including specifications as well as way of testing these.
• The team has work in the Gantt chart for the academic year 2023-2024
• Budget was finalized and turned in
• The team has work in standards. There were seven standards one for each requirement.
• Currently, the team is working in the device design and design matrix.