Here’s how our project unfolded over six weeks — from brainstorming to final prototype.

Visual Project Timeline

Here’s a bird’s eye view of our 6-week journey — from pivot to prototype.

Week 1 (15 – 21 June): Project Pivot & Planning

• Pivoted from MFC to asthma-focused wearable after discussions on empathy and feasibility
• Defined key signals: breath sounds, SpO₂, chest movement
• Researched sensor types, data needs, clinical relevance
• Started blog, app mockups, and system architecture brainstorm

Week 2 (22 – 28 June): First Circuits & App Drafts

• Built breadboard circuits for stethoscope mic, stretch sensor, SpO₂ sensor
• Designed housing sketches (Dylan & Vanessa)
• Connected sensors to Arduino; tested signal quality
• Started Bluetooth app development (Amar)

Week 3 (29 June – 5 July): Prototyping + Bluetooth

• Finalized wiring for wrist + chest wearable
• Tested cough, wheeze, and breathing signal collection
• Debugged BLE UART transmission between sensors and app
• Created basic logistic regression model + synthetic dataset (Dakshita)

Week 4 (6 – 12 July): Sensor Housing & App Refinement

• 3D printed electronics housing for chest module
• Finalized stethoscope mic and strap stitching design
• Developed ACQ test in app; added asthma log UI
• Improved ML features: added heart rate variability, wheeze energy

Week 5 (13 – 19 July): Integration & Testing

• Integrated chest and wrist hardware into one system
• Tested wearable accuracy vs commercial SpO₂ devices
• Added real-time Bluetooth sync, alert threshold tuning
• Filtered out sensor noise using moving averages & buffers

Week 6 (20 – 26 July): Final Presentation & Polish

• Final hardware with wearable housing + toggle switch + LEDs
• Refined app UI + alert screens
• Finalised ML model (threshold = 0.11, F2 score optimised)
• Completed video, poster, website, and presentation

From a pantry conversation to a working prototype — AsthmaAlly came alive in just 6 weeks.