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Open BCI: Bioelectric Signal Acquisition and Processing

The Open BCI project provides open source hardware and software for bioelectric signal acquisition systems (biosignal amplifiers). The OpenBCI hardware consists of an 8-channel bioelectric signal amplifier board with TI ADS1299 24 bit EEG front end, SD card slot and Bluetooth Low Energy (BLE) wireless link. It also includes an ST LIS3DH accelerometer.

Due to the high input resolution / input range, Electromyogram (EMG), Electrooculogram (EOG) or the Electroencephalogram (EEG) can be measured with the same device and could be used for mouse-/keyboard control or even for control of prosthesis or external appliances. The module is stackable so that also 16 channel recordings are possible.

The OpenBCI building block supports the OpenBCI data transfer protocol. Via the OpenBCI building block, up to eight raw biosignal data channels are obtained and can be utilized in desired signal processing configurations for controlling actuators or providing real time feedback of the bioelectric signals. For this purpose, other building blocks like digital filters or feature extraction / classification functions can be used.

The OpenBCI building block is based upon the AsTeRICS framework and works as part of an AsTeRICS runtime configuration on different target platforms.

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