Contact person: Business Client

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Location: Delhi, India

Budget: Recommended by industry experts

Time to start: As soon as possible

Project description:
"I am interfacing the SFH7072 pulse-oximeter sensor over I²C with an ESP32 and need production-grade firmware that gives me clean, trustworthy data.

The first milestone is rock-solid PPG data stabilization; once the signal is consistent we will layer SpO₂ and heart-rate algorithms on top. I would also like this data to be logged locally (e.g., SPIFFS or SD) while being streamed in real-time over BLE or Wi-Fi so I can watch the waveforms as they happen.

Please send a concise, detailed project proposal that explains your suggested signal-conditioning approach, any libraries or toolchains you will leverage, and how you intend to verify accuracy on real hardware.

Deliverables
• ESP32 firmware (source + binaries) with PPG stabilization
• Implemented SpO₂ and HR calculations, integrated into the same code base
• Data-logging module with timestamped records
• Real-time monitoring interface (web or BLE GATT)
• Build instructions and brief calibration / usage guide

Code must compile under the latest ESP-IDF or Arduino-ESP32 core (your choice, just specify). I will test on genuine SFH7072 hardware; acceptance is based on signal stability and matching reference pulse-oximeter readings." (client-provided description)