Embedded Engineer Intern

About the Role

• Duration: 3 Months (Unpaid)
• Work Nature: In-person (Office)
• Location: IIT Madras Campus, Guindy, Chennai.
• Certificate provided upon completion.

Project Overview

• Goal: Evaluate photoplethysmography (PPG) for cuffless blood pressure (BP) tracking.
• Target: Early preeclampsia risk detection in pregnant women.
• Current Focus: Sensor stability, clean signal acquisition, and edge-case testing in healthy adults.

Key Responsibilities

• Firmware Development: Program microcontrollers to stream high-frequency raw PPG and 3-axis accelerometer data.
• Data Jitter Control: Ensure highly stable sampling rates and eliminate packet transmission lag.
• Time Synchronization: Align raw sensor signals with timestamped reference cuff blood pressure readings.
• Signal Quality Testing: Collect pilot data under physical edge cases (e.g., motion, induced vasoconstriction).
• Storage Formats: Structure and log collected biosignals into clean binary, HDF5, or Parquet files.

Requirements & Tech Stack

• Core Tech: Embedded C/C++, Microcontrollers (ARM Cortex, ESP32, or similar).
• Communication: SPI, I2C, UART, and high-speed USB/Serial communication.
• Data Parsing: Python (for logging, synchronization scripts, and data serialization).
• Sensor Integration: Experience interfacing with optical biosensors (PPG) and inertial units (IMU).
• Instrumentation: Familiarity using oscilloscopes, logic analyzers, and basic hardware debugging tools.