Blog
Series A: Building an EEG Device from Scratch
A comprehensive series documenting the design and development of a custom EEG acquisition system, from fundamentals through hardware implementation.
Understanding EEG: The Fundamentals →
Explore the fundamentals of EEG: what it measures, why the signal is so small, and why EEG was chosen over alternative neural recording methods. Covers signal characteristics, the 10-20 electrode system, and frequency bands.
Choosing the Right Components →
A detailed walkthrough of component selection: the ADS1299 analog front-end, electrode choices, the IMU and heart rate sensor, microcontroller with BLE, and the complete power architecture with regulated supply rails.
Schematic and PCB Design →
From schematic to fabrication: the three-board architecture, signal routing via SPI and I2C, 4-layer PCB stack-up, and lessons learned from three design iterations toward a compact, manufacturable system.