Configurable automatic smart urinal flusher based on MQTT protocol

This paper investigates one possible way to reduce the wastage of clean water used in a public toilet. The study focuses on saving clean water from the use of an automatic urinal flushing system in a toilet. The automatic urinal flushing is set with different water flushing duration parameter. This is to find the most satisfied parameter for users while spending clean water as less as possible. In order to adjust the parameter, an automatic smart urinal flusher system is developed. The system uses MQTT as an underlying communication protocol. The protocol is used in collecting, controlling, commanding and debugging the system. The results in the testing environment show that using a flushing duration for 2.5 seconds is enough to satisfy most users while wasting clean water as less as possible.