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Luas MQTT is an open source node.js REST api that dynamically creates and publishes live LUAS (Irish tram/light rail system) RTPI time data to mqtt queues. The repo also includes the C++ code for an ESP8266 microcontroller to consume this RTPI timing data from an mqtt queue and display it on a 64X48 IIC I2C Compatible OLED screen. View the repository here: Luas MQTT