The software for a node can be written in any language that supports zmq and json.
The software for a node can be written in any language that supports zmq and json.
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Nodes send messages using json data. Sensors use zmq PUB/SUB. Actuators use zmq PUSH/PULL. Neurons use whatever they have to do get the job done, which is to SUB to sensors, and PUSH to actuators.