Python and Node.js with OpenBCI

• open_bci_v3.py manages the connection between the OpenBCI board and Python
• udp_server.py exposes the data over UDP
• socket_server.js a Node.js server that retransmits the data over a Web Socket
• htdocs/index.html a hack to display data using D3.js

Running the Server

• Run npm install to make sure you have the dependencies
• Plugin the OpenBCI V3 Dongle and turn on the Board
• Run python scripts from (https://github.com/OpenBCI/OpenBCI_Python):

python user.py -p "<serial port>" --add udp_server 127.0.0.1 8888 --add print

• Modify settings according to desired behaviour. See OpenBCI_Python README
• Start UDP server --> /start
• Run node socket_server.js
• Visit http://127.0.0.1:8880 to see your brain waves

Optionally

• Use python udp_client.py --json from the scripts folder to verify data is coming through
• Use python socket_client.py from the scripts folder to view the Web Socket data coming back into Python (requires socketio-client)

Dependency List

Python UDP demos require:

• pyserial
• numpy

Node sample requires:

• socket.io

Python Web Socket requires:

• socketio-client