Mind Readers
TJ Strzelecki (Presenting)Matt Waldersen
Rick SchumanKrishna Jharjaria
What We’re Doing
The proposed project will be a mobile brain-computer interface.
Computer applications will be presented to the user through commercially available video glasses.
An EOG and commercially available EEG will be mounted inside of a common enclosure and will enable the user to navigate and select various applications.
A dsPIC microcontroller will be used to acquire the EOG and EEG signals, the EEG signals will be analyzed by an FPGA and a BeagleBoard XM will control the virtual reality environment as well as execute all of the computer applications
Project-Specific Success Criteria
1) An ability to encode/decode data packets from a NeuroSky EEG.
2) An ability for a user to select applications based on signals from a NeuroSky EEG.
3) An ability for a user to navigate between different applications on a display using EOG signals.
4) An ability for the system to interactively train the user to effectively operate the device.
5) An ability to display a live video stream from an external camera module, and integrate applications into the video system.
Block Diagram
Sensitive analog circuitry (EOG) Distance between electrodes and
filtering/amplification Size of EOG PCB FPGA module connection (50 pin DIP socket) Data retrieval from and mounting of Wireless
EEG Dongle Communication between main PCB and
BeagleBoard Communication between EOG PCBs and main
board Access to DSPIC and FPGA for programming
PCB Design Considerations
Microcontroller Considerations
In system programmer Manual reset button Oscillator circuit Logic level translators
Power Supply Considerations
Multiple voltages levels and polarities required
Heat dissipation Current requirements
Main Board
Main Board
DSPIC33
Main Board
EOG Connectors/Logic Converters
Main Board
Linear Regulators/ DC Inverter
EOG Boards
EOG Boards
EOG Boards
EOG Boards
EOG Boards
Differential ATD Converter
Questions?
Reference (DSPIC33EP)
Reference (RJ-12 Connection)
Reference (PIC Programmer)
Reference (Oscillator/Reset)
Reference (DC Voltage Inv)
ADS1210 ATD
OPA4131 (Op Amps)
LT3083 Linear Regulator
MAX764 DC Inverter