Contact person: Business Client

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Location: Dubai, United Arab Emirates

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I’ve completed the hardware design of a smart ring built around the nRF52810 SoC. It includes MAX30102 (SpO₂/heart rate), TMP117 (temperature), ADS1115 (strain sensing), and BQ25120A (battery/charging).

I’m looking for a developer to handle firmware and mobile app development.
Tasks:
Write firmware for nRF52810 using nRF SDK or Zephyr.
Interface all I²C sensors and stream data over BLE.
Create a simple mobile app (Flutter or React Native) to show heart rate, SpO₂, temperature, strain, and battery level.
Ensure low-power operation and stable BLE connection.
Deliver tested firmware (.hex + source) and app (.apk + source).
You should have:
Strong nRF52 BLE experience (custom GATT services).
Good knowledge of I²C sensor drivers.
Prior wearable or IoT BLE project experience.
What I’ll provide:
Schematic, BOM, pin map, and full hardware details." (client-provided description)