<span>This paper proposed the prototype of smart car parking powered by photovoltaic. There is probability that cars will hit the wall or car out from the parking lot. The main objectives of this research are to determine the power rating and sizing of PV panel suitable for smart car parking system and design an ultrasonic parking sensor circuit to alert any obstacle while parking and development the prototype of smart car parking using PV. Smart car parking consists of distance sensors, LED, Arduino UNO potentiometer, resistors, and Node MCU. Where, Arduino UNO as a microcontroller was coding to receive the signal from the sensor and transmit signal to LED to display the car distance condition. To measure the distance between sensor positions to a car, HC-SR04 ultrasonic distance sensor is used. Whenever a car come near to the sensor within range specified, the red, yellow or green LED will light up and send the condition happening to the smartphone application. The application build-up can display the real situation and the PV system can supply enough electricity to the smart car parking. </span>
This project is about the innovation of automated irrigation system at paddy field. Paddy irrigation system traditionally was depending on raining seasons. The changing of raining seasons will affect paddy growth. The farmer will use water pump sourced from diesel to drain water into the paddy field. The diesel water pump produces smoke that causes air pollution and bad health to the farmer. Moreover, diesel was non-reusable energy plus the manual control of irrigation system wastes time and human energy to operate the water pump and observe the water level. This project proposed the photovoltaic system to power the irrigation system and develop the prototype to represent the element of real irrigation system at the paddy field. Standalone photovoltaic system consists of solar panel, battery as energy storage, solar charger controller and water pump and the irrigation system is fully automated system controlled by Arduino UNO. Result obtain the solar-powered paddy irrigation system success coverall supply electricity to the irrigation system. The water pump only runs when low water level which measures by polypropylene float switch. The proposed project can produce efficient irrigation system, reduce the air pollution at paddy field and make farmer better health.
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