Atrium

Het Bhavsar mail

OSHWA UID

IN000108 Project Website

Certification Date

November 14, 2026

Country

India

Atrium is an open optical wearable: a 20.9 x 11 x 5.3 mm pod worn on the temporal region, beside the eye. It tracks pulse, heart-rate variability, skin-temperature trend, sleep and activity, and syncs to a phone over Bluetooth LE. Two 6-layer HDI boards and a flex sit around a 30 mAh cell. Released: schematics, layouts (EasyEDA Pro source), Gerbers, BOMs, CAD, firmware and the Android/iOS app. Planned next: bone-conduction audio for voice. A wellness and research device, not a medical device.

Version

0.1.0-evt

Licenses
Hardware
CERN-OHL-S-2.0
Software
Apache
Documentation
CC-BY-SA-4.0
View Documentation

Certification mark

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Project Type
Wearables
Electronics
IOT
Keywords
wearable, PPG, heart rate variability, sleep, skin temperature, Bluetooth LE, nRF52832, Zephyr, Flutter, open hardware