What was done
This week, I was focused on the design report, covering the system architecture and project management plan. I documented the signal path from the visual stimuli and EEG electrodes through the ADS1299, ESP32-S3, and mobile application. This included SPI data acquisition, embedded filtering and CCA classification, confidence-based command rejection, and BLE transmission for spoken output.
For project management, I outlined the development schedule, team responsibilities, integration milestones, preliminary budget, and fabrication plans. I also documented technical risks and mitigation strategies for EEG signal quality, PCB issues, and classification performance, including potential fallback approaches.
Alongside the report, I worked on ESP32-S3 firmware for BLE communication with the mobile application and the SPI software interface with the ADS1299. This work focused on supporting wireless command transmission and establishing the communication routines needed for ADC configuration and EEG data acquisition.
I also finished gathering models for 3D Printing and should have a headset prototype by end of week.
Next Week
I plan on helping with the PCB and getting an MVP of the mobile app done.