Altitude.9 | Devpost

Altitude.9 — Sleep Redefined

Imagine waking up each morning truly rested.

Despite WHO recommendations, only two‑thirds of adults worldwide are getting enough sleep. In major OECD countries alone, this sleep deficit is costing hundreds of billions in lost productivity and long‑term health. Here in Singapore, the picture is starker still: only one in four people manage 7+ hours each night. Things like poor ventilation and uncomfortable thermal conditions are recurring culprits.

That’s where Altitude.9 comes in. Engineered for sleepers, by sleepers.

Sleeper putting on alt9 neck pillow

What it does

Altitude.9 isn’t just another sleep gadget. It’s a thermal comfort system built into a pillow sleeve, whether on your bed or in-flight. It actively maintains ideal sleep‑temperature, tracks what’s happening around you, and evolves every night to give you better rest.

How we built it

Integrated thermal control: phase‑change fabric + Peltier pads. It intelligently warms or cools based on your preferences, not just ambient conditions.
Embedded sensors monitor heart rate, CO₂ levels, ambient temperature, giving you data on how your sleep was influenced by environment + body metrics.
Sleep insights dashboard + remediation tips: what to change, tweak, or how to optimize your sleep night by night.

Sensors are housed separately from the sleep pad, to ensure sleeper's comfort throughout their deserved rest.

Challenges we ran into

Getting a water cooling system to fit into a small form factor was not accomplishable under a tight timeline and minimal experience. Instead, our team pivoted to tiny peltier pads to accomplish a significant thermal exchange within a small size envelope.

Accomplishments that we're proud of

MVP built within hackathon timeline, with working heating/cooling modes.
Data capture and dashboard live, feeding back environmental and physiological signals.
UI/UX framework shipped using Shadcn‑UI to give a clean, intuitive user experience.
Software pipeline set up via Agentic AI workflows to accelerate iteration & testing.

What we learned

We gained more experience about the espressif ecosystem and how to interface i2c on the esp32-devkitc
Cadding under time pressure, getting the electronics to interface with code.
Shipping shadcn-ui