https://openbci.com/

OpenBCI specializes in creating low-cost, high-quality biosensing hardware for brain computer interfacing. Our arduino compatible biosensing boards provide high resolution imaging and recording of EMG, ECG, and EEG signals. Our BCI devices have been used by researchers, makers, and hobbyists in over 60+ countries as brain computer interfaces to power machines and map brain activity. OpenBCI headsets, boards, sensors and electrodes allow anyone interested in biosensing, neurofeedback, and brain computer interfacing to purchase high quality equipment at affordable prices.