Energy-saving street lighting (ESSL) system is one of the promising approach to support smart city in the future. The technology that evolves with the advance in low energy microcontroller and wireless communication has become the foundation in the development of ESSL system. This paper presents initial development for ESSL system focusing on the Malaysia environment. The system utilizing Waspmote as a main part of sensor node, zigbee for communication and PIR sensor for motion detection. Deployment of sensor node at real environment also been discussed in this initial develompent. The sensor node can be used to control the brightness of the street light and the developed system found to save energy through the switching method of street light.

Water quality resembles physical, chemical and biology features of the water. Water quality level is used to determine the suitability and safeness for general usage. Hence in this study, fuzzy algorithms are developed to evaluate water quality based on three features namely power of hydrogen (pH), dissolved oxygen (DO) as well as temperature. Firstly, sensors of pH and DO are connected to stamp circuit that acted as universal asynchronous receiver / transmitter (UART) whilst temperature sensor is connected to a microcontroller. Next, fuzzy algorithms are developed based on water quality standards from the Department of Environmental Malaysia for decision making. Thus, both hardware and software are integrated and initial findings showed that the proposed system is apt for monitoring of water quality. Keywords-water quality, power of hydrogen (pH), dissolved oxygen (D), temperature, fuzzy algorithm

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