180020037 - 180020037 RAJEEVDASS - Attempt1 - 2022-04-16 9_36 am/Q3 - Design Summary/Question text

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+Design Summary (add text in the box below or upload a PDF)
+Explain how you approach this design problem.
+Include your assumptions, trade-offs, with any and all design choices you make.
+

180020037 - 180020037 RAJEEVDASS - Attempt1 - 2022-04-16 9_36 am/Q4 - System Block Diagram/Question text

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+Upload the block diagram of the system you have designed as a single PDF.
+
+Hand drawn diagram is acceptable - just make sure it is neat and clearly labelled. Mark all interfaces. Make sure to include suitable power supply/supplies.

180020037 - 180020037 RAJEEVDASS - Attempt1 - 2022-04-16 9_36 am/Q5 - Power Supply Summary/Question text

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+Power Supply Summary (add text in the box below or upload a PDF. Handwritten+scanned is acceptable as long as it is neat and legible.)
+
+* Explain your choice of your power supply.	* Explain how your power supply works. Include circuit diagrams, waveforms and graphs as needed.

180020040 - 180020040 PHANINDRA - Attempt1 - 2022-04-16 9_06 am/Q3 - Design Summary/Question text

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+Design Summary (add text in the box below or upload a PDF)
+Explain how you approach this design problem.
+Include your assumptions, trade-offs, with any and all design choices you make.
+

180020040 - 180020040 PHANINDRA - Attempt1 - 2022-04-16 9_06 am/Q4 - System Block Diagram/Question text

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+Upload the block diagram of the system you have designed as a single PDF.
+
+Hand drawn diagram is acceptable - just make sure it is neat and clearly labelled. Mark all interfaces. Make sure to include suitable power supply/supplies.

180020040 - 180020040 PHANINDRA - Attempt1 - 2022-04-16 9_06 am/Q5 - Power Supply Summary/Question text

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+Power Supply Summary (add text in the box below or upload a PDF. Handwritten+scanned is acceptable as long as it is neat and legible.)
+
+* Explain your choice of your power supply.	* Explain how your power supply works. Include circuit diagrams, waveforms and graphs as needed.

180020040 - 180020040 PHANINDRA - Attempt1 - 2022-04-16 9_06 am/Q6 - Industrial Design Summary/Question text

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+Industrial Design Summary (add text in the box below or upload a PDF. Handwritten+scanned is acceptable as long as it is neat and legible.)
+
+	* Show (with labelled and dimensioned sketches) how your product will look (in the final form) as delivered to the end user. Include the enclosure, mounting etc as necessary.
+	* Explain in a few words what the enclosure is made of.
+

180020040 - 180020040 PHANINDRA - Attempt1 - 2022-04-16 9_06 am/Q7 - KiCAD Design/Question text

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+Complete your entire design in Kicad, including:
+
+	* Circuit / schematic design:
+
+	* Make sure to assign the appropriate values / ratings for each component. When you select components make sure they exist on a commercial electronic platform (e.g. some are listed here: https://gitea.iitdh.ac.in/PEG/PEG-Wiki/wiki/PurchasingComponents)
+	* Assign appropriate footprints to each component
+	* Make sure to run the Electrical Rule Checker before moving to the layout.
+
+	* PCB Layout design
+
+When you are done, export the design as a SINGLE ZIP FILE (File > Archive) and then upload the zip file here. 
+

180020040 - 180020040 PHANINDRA - Attempt1 - 2022-04-16 9_06 am/Q8 - BOM/Question text

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+Upload the Bill of materials (BOM) spreadsheet as a single XLS file. The spreadsheet should contain the following columns, at a minimum:
+
+* Reference designation	* Part number	* Value / Ratings

Shivam/Comments.txt

@@ -23,12 +23,7 @@ Design a system using a conductive water sensor (basically two metal probes that
 
 6.	KICAD Design
 	Schematic:
-	Looks good
 	
 	PCB:
-	No PCB Found. I've deducted some points for that but other responses are all ok.
-	
-7.	Pricing / BOM / Assembly
-	Why do you need 400V transistors?
-	Where are remaining components in the BOM + pricing? Connectors, pcb, etc...?
 	
+7.	Pricing / Assembly

Swakath/Comments.txt

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-Name: Swakath
-
-1.	Question text:
-Design a system using this Honeywell ammonia sensor (https://drive.google.com/file/d/164WvPD7GauvseOfH-K3v8iZ4YYmQFkq-/view?usp=sharing ) to detect when ammonia concentration in ambient atmosphere exceeds 100 ppm an alert an operator in a control room about 100m away. This device will be mounted in various sections of an industrial processing plant. The complete plant will need a fairly large number (~20) of sensors so unit costs needs to be kept under control. Also, once mounted it will be very difficult to remove/service/repair the sensing devices.
-
-
-2.	Design summary:
-	Overall approach is fine.
-	Good work finding th module that has a 4-20mA output directly
-
-
-3.	Block diagram
-	Why is there a common supply for both the sensor module and the receiver module?
-	They might be physically very far apart!
-	
-4.	Power supply design
-	The brick module may end up being underpowered for what you need.
-	Also, why design a rectifier filter and then use the module?
-	Power in a current-driven system is indeed tricky - you need to factor in the worst case 
-	voltage drop and times the current is power. 
-
-5.	Industrial Design:
-
-
-6.	KICAD Design
-	Schematic:
-	All good - good use of decoupling caps.
-	No Power on LED?
-	How exactly is the fault opamp working?
-	Also the OpAmp outputs are +/-12V. If you're connecting this to the uC you need to scale down to 5V or 3v3.
-
-	
-	PCB:
-	No Mounting holes?
-	Good use of pours
-	
-7.	Pricing / BOM / Assembly
-	The question asked for 2 prototypes - meaning two systems with about 20 sensor modules each.
-	But I guess this interpretation is fine too.