  This paper presents Open-source software and a developed shield board for the
Raspberry Pi family of single-board computers that can be used to read EEG
signals. We have described the mechanism for reading EEG signals and
decomposing them into a Fourier series and provided examples of controlling
LEDs and a toy robot by blinking. Finally, we discussed the prospects of the
brain-computer interface for the near future and considered various methods for
controlling external mechanical objects using real-time EEG signals.
