Demo videos:

https://youtu.be/-DcvRPJJkj0

https://youtube.com/shorts/Ycy8wP4oW2o?si=W0n1Oyof7M37kdta

What’s different

  Instead of electrochemical O₂ fuel cells and typical CO₂ NDIR modules (slower response, periodic replacement/calibration), we use non-consumable optical sensors tuned for breath-by-breath dynamics. Our CO2 channel samples at 10 Hz — roughly ~100× faster than NDIR sensors — and does not require an external pump, improving portability.

  Inspired by the optical, low-drift principles used in spaceflight instrumentation (e.g., Perseverance Mars Rover [1] and NASA PUMA projects [2]), our analyzer uses non-consumable optical gas sensors engineered for stability in harsh environments.

  Electronics: custom PCB with ESP32; BLE/Wi-Fi, USB-C, Accelerometer, Magnitometer, PMIC with shipping mode, OTA
  CO₂ sensor: optical IR, 10 Hz; (supports capnography for medical)
  O₂ sensor: optical, T63 < 2 s; low drift (< ~1%/year in lab conditions)
  Flow/Volume: low-inertia turbine (bi-directional), optical interrupter
  Measurements: in-flow, breath-by-breath
  Portability: device < 200 g + ~120 g mask (Hans Rudolph)
  Power: accumulator w/ integrated charging & protection; >4 h typical runtime
  Maintenance: no annual sensor swaps; no bottled-gas calibration

  Sport labs, pro teams, elite athletes/coaches, premium fitness clubs, nutrition and longevity labs; medical workflows later (post-regulatory).

  Enclosure/thermal design, turbine inertia/lag at very low flows, CO2 calibration method, humidity transients, and cross-flow effects are active work. We’ll publish more validation data (and APIs) as we progress.

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[1] - https://www.nasa.gov/news-release/nasas-perseverance-mars-ro...

[2] - https://technology.nasa.gov/patent/LEW-TOPS-16