Aegis Coffee

Total Time Spent on the Project: 56 hours

🗓 26/6 – 8 hours

• Sketched out the four-chamber airflow design on paper.
  
• Researched appropriate filtration methods using coffee grounds and compatible neutralizers like NH₃ and ZnCl₂.
  
• Identified components needed for each chamber's function and created a functional flow outline.
  
• Selected Raspberry Pi 5 and HAT to support multiple sensors and I/O control.

🗓 27/6 – 8 hours

• Began CAD modeling of the external enclosure using Fusion 360.
  
• Created chamber cutouts with airflow paths, modeled fans, filters, and chemical scrubber holders.
  
• Added placeholders for sensors and wiring channels.
  
• Evaluated airflow simulations and adjusted internal channel diameters.

🗓 28/6 – 7 hours

• Continued refining the CAD model.
  
• Modeled mount points for Raspberry Pi and fans inside the waterproof housing.
  
• Added slots for the LCD screen and external power switch access.
  
• Generated first rendered image of the full 3D unit.
  
• Printed basic prototype casing (not functional) for scale check.

🗓 29/6 – 6 hours

• Prototyped wiring layout based on sensor locations inside the chamber model.
  
• Experimented with servo positioning for air diversion between chambers.
  
• Tested Raspberry Pi GPIO compatibility with selected servo valve.

🗓 30/6 – 8 hours

• Finalized the 3D CAD model.
  
• Generated exploded view and section views for documentation.
  
• Worked on sensor mounting clips inside the model.
  
• Started design export into STL and DXF for fabrication.

🗓 1/7 – 8 hours

• Simulated chemical flow interaction using different inner surfaces in the third chamber.
• drived 2 equations to ensure the effiecency of the selected activation method
• Integrated brackets for coffee grounds and ZnCl₂ filters.
  
• Created safety seal zones in the model for the ammonia chamber.
  
• Documented CAD specifications in notes and saved design versions.

🗓 2/7 – 7 hours

• Created high-res render of the full model for use in README.
  
• Finalized assembly layout including fasteners and cable glands.
  
• Cross-referenced with BOM to ensure parts match design.

🗓 3/7 – 4 hours

• Assembled all documentation: BOM CSV, README with all image links, journal logs.
• Uploaded images, model screenshots, and wiring diagram to the GitHub repo.
  
• Final formatting and proofing of README.md and journal.md for requirement compliance.
  
• Performed last round of link testing and completeness check on project folder.

Pictures Documentating

Estimated results of the project:

drived equations: