Read through the problem statements below and follow the requirements for your chosen task.
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Problem Statements Locked
Tasks for CAD will be revealed on 25 SEP 2026 • 15:00 IST.
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Review the submission instructions while you wait for the tasks to unlock.
2 Core Requirements
Task 1: Nano + MPU6050 Enclosure with Custom Lid
Design a 3D-printable enclosure for a Nano and MPU6050, including a custom lid. This is the required CAD task for shortlisting.
Concept & Inspiration
Use only the official component drawings provided with the task brief. The model should be printable in principle: avoid unsupported overhangs and maintain reasonable wall thickness. You do not need to print it.
Core Requirements
Include either Task1.stl or Task1.step in the Task1 folder.
Include Design_rationale.docx (150 to 250 words) explaining the board arrangement, standoff heights, wall height, lid mechanism choice and why, and tradeoffs made to fit the envelope.
Rationale checklist
Describe how you arranged the Nano and MPU6050 boards.
Explain your standoff heights and enclosure wall height.
Describe the lid mechanism you chose and why.
Discuss tradeoffs made to fit the required envelope.
4 Core Requirements
Task 2: Slider Crank Mechanism
Model a slider-crank mechanism as a constrained assembly and demonstrate that it moves through its full range without interference or binding. This task is optional and adds bonus weight.
Concept & Inspiration
Task 2 is not required for shortlisting. If you attempt it, preserve the assembly joints/mates in your STEP export so the mechanism constraints remain available for evaluation.
Core Requirements
Include Task2.step with joints/mates preserved. STEP is strongly preferred over STL because it retains the mechanism constraints.
Include a short Demo.mp4 or Demo.gif showing movement at crank angles 0°, 90°, 180°, and 270°, with no interference or binding.
If video/GIF is not possible, include labeled screenshots named Demo_0deg.png, Demo_90deg.png, Demo_180deg.png, and Demo_270deg.png.
Include Design_rationale.docx (150 to 250 words) explaining your crank radius and rod length choices, how you defined the joints, and what interference issues you checked.
Rationale checklist
Explain your crank radius and connecting-rod length choices.
Describe how the joints/mates were defined.
Explain how you checked for interference throughout the range of motion.
CAD submission requirements
One folder. Both CAD tasks.
Submit one Google Drive folder link through the website upload form. Your name, roll number, and department are already captured at login; use your name only in the folder name: <YourName>_CAD.
Mandatory sharing permissionAnyone with the link: Viewer
Restricted or login required links count as not submitted. Test the folder from an incognito window before submitting.
Use the exact file names shown so submissions can be processed correctly.
Task 1 model: Task1.stl or Task1.step. Rationale: 150–250 words on board arrangement, standoff heights, wall height, lid mechanism and tradeoffs.
Task 2: preserve joints/mates in Task2.step. Demonstrate motion at 0°, 90°, 180°, and 270° without interference/binding, using video/GIF or labeled screenshots. Rationale: 150–250 words on dimensions, joints, and interference checks.
Use only official component drawings. Models should be printable in principle, with reasonable wall thickness and no unsupported overhangs; printing is not required.
Task 1 is required for shortlisting. Task 2 is optional and adds bonus weight.
