My Development Journey
Follow the evolution of my BCI project, from initial concepts to the latest generation hardware and software. I believe in transparent development and sharing progress.
Mark I PCB (The Pioneer)
My first foray into creating a custom EEG board. This was my first PCB, and I knew nothing about what I was doing. It used pure analog components with no ADC or microcontroller. It taught me how important power management is and the necessity of a proper ADC for signal processing.
Mark II PCB (The Refinement)
Building on Mark I, this iteration focused on higher quality amplifiers and filters, much-needed improved power management, and initial integration with the ESP32. I experimented with different filtering techniques and form factors, and learned how critical noise control is for EEG applications.
Mark III PCB (The Contender) Current Focus
Progress Tracker
The current generation aims for the lowest possible noise, robust battery and USB-C power options, and a streamlined design for integration into a wearable headset. This version utilizes the ESP32-C3 and the ADS1299, with advanced input filtering.