The Brain Computer Interface (BCI) capstone project is a system involving an Electroencephalograph (EEG) connected to a Digital Signal Processor (DSP) that sends a signal to a relay to power any simple electronic device (light bulbs, etc.).

Our design involves using an EEG to sense electronic signals from differential electrode pairs on the frontal cortex (the forehead). An electrical signal from the brain will trigger a voltage spike which will be sent from the EEG channel to an ADC. The received voltage level is then checked by the DSP's flash memory program and, when a signal is detected, the DSP will output a signal to the relay, which in turn will power any electronic device we choose.

The BCI we are designing is unique in size and cost. The production of our system was not costly, and the size of the combined hardware is relatively small. This would make our BCI design useful for portability purposes, as it can be transported with ease.


Capstone group presentation

Date Accepted

May 2007

Subject Categories



brain computer interface (BCI), electroencephalograph (EEG), digital signal processor (DSP), brain



Publication Date


Rights Holder

Patrick Cunningham, et al.

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Engineering Commons