Has anyone here setup an MQTT Broker on an Arduino? I am looking to use pubsubclient to send sensor data from 12 individual wireless sensors to an Arduino every 250ms. I know this can be done using a Raspberry Pi, but I am new to all this and am just now comfortable with programming an Arduino. I also looked at using XBee, but have heard it may not be able to handle the data frequency. I am only sending 1 byte of data from each sensor each time. Any help or suggestion is appreciated.