This project is the result of several years of work on the development of BCI. We believe that the easiest way to get started with biosignals is to use a shield Reading EEG signals as fully and clearly as possible https://github.com/Ildaron/EEGwithRaspberryPI
PiEEG is an open-source Raspberry Pi shield that measures biosignals such as those used in electroencephalography (EEG), electromyography (EMG), and electrocardiography (ECG).