# fNIRS

**Repository Path**: bearzeng/fNIRS

## Basic Information

- **Project Name**: fNIRS
- **Description**: No description available
- **Primary Language**: Unknown
- **License**: BSD-3-Clause
- **Default Branch**: main
- **Homepage**: None
- **GVP Project**: No

## Statistics

- **Stars**: 0
- **Forks**: 0
- **Created**: 2026-04-07
- **Last Updated**: 2026-04-07

## Categories & Tags

**Categories**: Uncategorized

**Tags**: None

## README

# OpenNIRScap: An Open-Source, Low-Cost Wearable Near-Infrared Spectroscopy-based Brain Interfacing Cap

<div align="center">
  <img src="https://github.com/user-attachments/assets/e845183c-7722-4132-92f5-48b59a016dfe" alt="Device Overview" width="400"/>
</div>

## Project Overview

This project introduces a low-cost, ergonomic functional Near-Infrared Spectroscopy (fNIRS) device designed for real-time brain activity monitoring. fNIRS is a non-invasive technique that uses near-infrared light to measure changes in blood oxygenation, providing insights into neural activity based on the modified Beer-Lambert Law.

While conventional fNIRS systems are expensive, bulky, and limited to clinical environments, this system is designed to be accessible, accurate, and user-friendly—ideal for education, personal health tracking, and portable research applications.

### System Highlights

- 24 custom sensor modules supporting 24 detectors and 8 dual-wavelength LED emitters (660 nm & 990 nm)
- Custom electrical control unit (ECU) built around a low-power STM32 microcontroller (STM32L476RET6) that interfaces with all sensor modules for synchronized control and data acquistion
- Ergonomic mechanical design for secure, comfortable wear during extended sessions
- Interactive Python-based GUI for live data visualization, serial communication, and module control