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All Journal Jurnal SImetri Rekayasa Jurnal Sains dan Teknologi
Lisa Adriana siregar
Universitas Harapan Medan
Aerospace Engineering Agriculture, Biological Sciences & Forestry Automotive Engineering Chemical Engineering, Chemistry & Bioengineering Chemistry Civil Engineering, Building, Construction & Architecture Computer Science & IT Control & Systems Engineering Dentistry Electrical & Electronics Engineering Energy Engineering Health Professions Industrial & Manufacturing Engineering Mathematics Mechanical Engineering Medicine & Pharmacology Nursing Public Health Veterinary

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RANCANG BANGUN SISTEM PENGENDALI JARAK JAUH MENGGUNAKAN FREKUENSI RADIO HC-12 BERBASIS ANDROID Dinda Melati; Lisa Adriana siregar
Jurnal Simetri Rekayasa Vol 3 No 1 (2021): Edisi April 2021
Publisher : Universitas Harapan Medan

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Abstract

The development of electronic technology especially with regard to automatic control is increasing in line with the development of the science and the automation of this automatic control technology is applied to the different electronic devices used daily to further assist in human work, However many things the current remote control system still has a shortage of people having to use a cost report. such as a pulse or a packaged Internet data currently used using a gateway text or the Internet. For the time being, automatic designs in remote control systems that use modulation frequencies work on radio frequencies, 4.333 MHZ. Which enables it to turn on and off electronics that are commonly used in everyday life. Examples: fans, water pumps, and lights. This device activates the bluetooth using a smartphone which a frequency of hc-12 will read then be processed and received by arduino. With this deleted design, the prototype of the remote control system, made possible by artificial androids to shut down and activate the home smart electronic devices.
RANCANG BANGUN SISTEM KENDALI KELISTRIKAN MASJID AL-ISTIQOMAH MENGGUNAKAN PENERIMA HC-12 BERBASIS ARDUINO Febriansyah Putra; Ali Hanafiah Rambe; Lisa Adriana Siregar
Jurnal Simetri Rekayasa Vol 4 No 1 (2022): Edisi April 2022
Publisher : Universitas Harapan Medan

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Abstract

The current development of control and automatic system technology allows operators to easily turn on and off electronic devices remotely without having to make direct contact, this is very effective in saving time and helping one's work become easier. Currently electrical energy is a basic human need. However, the use of electrical energy is not used optimally, its use tends to be excessive, the cause is due to someone's negligence of an electrical device that forgot to turn it off. To overcome this problem, it is necessary to have an automatic control system that can control the switch to help minimize the waste of electrical energy. However, various kinds of automatic control system devices have drawbacks, including requiring an internet connection or using an SMS gateway so that they can be controlled remotely, which will increase spending on the budget for internet or credit needs every month. The method used in this design uses Arduino uno, HC – 12 module, ZMTC103C current sensor, and relay. This tool works when an instruction signal is received via the HC-12 module then the signal is forwarded to Arduino to turn on or turn off the electric device through a relay, the current sensor detects the condition of the electric device. From the results of testing the control system successfully turns on and off loads in the form of lights, fans, water pumps properly and can detect lights that go out.
Performance And Efficiency Analysis of 3.3 kWp Hybrid Solar PV Under Tropical Climate Lisa Adriana Siregar; Yussa Ananda; Ahmad Sofyan; M. Iqbal; Aprima Matondang
INSOLOGI: Jurnal Sains dan Teknologi Vol. 5 No. 5 (2026): Oktober 2026
Publisher : Yayasan Literasi Sains Indonesia

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.55123/insologi.v5i5.9473

Abstract

The deployment of household-scale Rooftop Solar Photovoltaic (PV) systems has experienced rapid growth as a clean energy transition solution in tropical regions. However, the performance and power conversion efficiency of solar modules are strongly influenced by environmental parameter fluctuations, particularly solar radiation intensity and ambient temperature. This study aims to analyze the performance and operational efficiency of a 3.3 kWp household-scale Hybrid PV system based on fluctuations in solar irradiance and environmental temperature. Operational data collection was conducted over 12 hours (08:00–20:10 WIB) at 10-minute logging intervals, covering parameters of voltage, current, DC/AC power, light intensity, and temperature. Results show that the maximum solar radiation intensity reached 342.8 W/m² at 14:40 WIB with a daily average of 144.66 W/m², while the highest ambient temperature was recorded at 49.5°C at 12:50 WIB with an average of 38.74°C. The peak power output generated by the solar module (Ppv) was 432.6 W (at 08:30 WIB) with an average power of 105.18 W. Increasing ambient temperatures above Standard Test Conditions (STC) were shown to cause a reduction in module operating voltage (Vpv) and system conversion efficiency (Sitorus et al., 2025). The MPPT-based Solar Charge Controller (SCC) and energy storage battery successfully maintained the stability of household AC electrical power supply with an average served load power of 31.32 W (Wahyu Firmansyah et al., 2025). This evaluation provides technical insight into the operational characteristics and reliability of a 3.3 kWp Hybrid PV system in supporting residential electrical energy demand
Co-Authors Ahmad Sofyan Ali Hanafiah Rambe Aprima Matondang Dinda Melati Febriansyah Putra M. Iqbal Yussa Ananda