Along with the development of science and technology, problems often occur that threaten security at home. These problems originate from a level of security that does not meet security standards at home. Various problems that can threaten home security conditions are fire hazards that can be caused by neglect of home temperature regulation and electrochemical equipment that is uncontrolled by the homeowner or thief danger that can easily enter the house. The design of the home security system prototype is programmed and controlled by the NodeMCU ESP-8266 to transmit all data from sensor readings to the interface on the Cayenne dashboard. PIR sensor (HC-SR501) has a digital output, if the sensor detects a movement, the NodeMCU ESP-8266 will give a logical value of one. Gas sensor concentration (MQ-02) in testing has an average difference of 2.79 ppm (part per million). The reading results of all sensors will be measured through the Internet of Things interface displayed on the Cayenne dashboard, the simulated gas concentration with gas matches with the difference results, test results and analysis results of 2.79 ppm (part per million) and if the gas sensor (MQ -02) Exceeds the specified parameters, the buzzer will sound. PIR sensor testing (HC-SR501) will work optimally by human movement if at an angle of 45˚ because the success rate is 100% in ten experiments and in the 90˚ angle the success rate is 80%.
Sumber energi terbarukan mempunyai sifat terbarukan serta berkesinambungan dan pemanfaatan sumber energi terbarukan merupakan alternatif yang perlu terus dikembangkan. Pembangkit Listrik Tenaga Surya (PLTS) menggunakan energi matahari sebagai sumber terbarukan dan mengkonversi energi matahari menjadi energi listrik. Untuk memaksimalkan intensitas matahari yang diterima oleh panel surya maka pada perancangan sistem dibutuhkan sudut kemiringan panel yang paling tepat untuk menerima radiasi matahari yang paling tinggi. Penelitian ini dilakukan untuk mengetahui peningkatan arus keluaran terhadap perubahan sudut kemiringan pada photovoltaic, dengan menggunakan regretion quadratic method. Hasil yang diperoleh pengukuran sudut kemiringan PV dengan arus keluaran menggunakan metode regresi kuadratik sudut optimum peletakan panel sel surya dalam menerima paparan radiasi sinar matahari pada sudut 36.7º, dengan nilai arus keluaran sebesar 1.99 Ampere. Ternyata hasil pengukuran real dibandingkan dengan menggunakan metode regresi kuadratik diperoleh hasil nilai RMSE (root mean sequre error) 0.27476.
The negative impact of fossil-fueled plants and the lack of public understanding of renewable energy lies behind the holding of these PKM activities with the aim of educating and at the same time transferring technology that is directly beneficial to the community in the form of solar powered street lighting. From the surveys that have been conducted where there are no available street lighting facilities so that there are some community activities that are difficult to do at night. From this work, there were two important things, among others, that the community gained an understanding of renewable energy and knowledge to efficiently use energy to reduce the environmental impact of the dominant fossil power plant in Indonesia. The second is that with the help of solar-powered street lights, the community is very helpful in carrying out activities at night and creates more secure conditions in the community.
The use of solar energy as an alternative to fossil fuels for electricity generation is increasingly being carried out nowadays. considering the decreasing oil reserves and also the environmental pollution that they cause. in order to increase the utilization of solar energy utilization in Indonesia, it is necessary to conduct socialization or introduction to various elements of society, especially students, so that it is expected to provide understanding and will also increase the utilization of solar cells in the future. socialization of Renewable Energy Utilization (PLTS) carried out at SMP IT ALMAKA Jakarta was conducted by giving an introduction to how solar cells work, problems regarding solar cells and how to apply solar cells to meet the electricity needs of the community. The presentation was conducted with an interactive method with theoretical exposure, demonstration of how to use solar cells, and question and answer sessions. the results obtained were that the participants seemed enthusiastic and able to understand how to apply solar cells seen in the question and answer session. so that participants who are the younger generation are expected to be able to develop and utilize the use of solar cells for future energy sources
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