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All Journal Saintia Fisika Abdimas Talenta : Jurnal Pengabdian Kepada Masyarakat Journal of Technomaterial Physics
Kurnia Brahmana
Faculty Of Mathematics And Natural Science, Universitas Sumatera Utara, Medan, Indonesia
Agriculture, Biological Sciences & Forestry Astronomy Civil Engineering, Building, Construction & Architecture Control & Systems Engineering Earth & Planetary Sciences Electrical & Electronics Engineering Energy Law, Crime, Criminology & Criminal Justice Materials Science & Nanotechnology Physics Social Sciences

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Journal : Journal of Technomaterial Physics

 1 
Utilization of the EG8010 Microcontroller to Construct a Pure Sine Inverter Using the Single Phase Sinusoidal Inverter ASIC (Application Specific Integrated Circuit) Method Brahmana, Kurnia
Journal of Technomaterial Physics Vol. 2 No. 2 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i2.5359

Abstract

A pure sine inverter has been successfully designed by utilizing the EG8010 microcontroller which is used as an alternative energy source when the main power grid is cut. This pure sine inverter tool functions to stop the conversion when the power drops from the minimum value. This tool consists of a microcontroller to run the DC to AC converter instructions for 380 volts. Meanwhile, DC functions as a voltage source that provides the overall voltage. The signal waves that have been converted from DC to AC on the EG8010 Module are needed to control FET which functions as a signal amplifier. This signal is used to drive four FET n-channel and IRF480 which work alternately in sending data to the power FET to form an H-Bridge bridge and the output signal from the H-Bridge. Furthermore, the H-Bridge bridge and the output signal from the H-Bridge are sent through the transformer, so that the final output signal is a pure DC to AC sine wave. The resulting pure sine wave dc to ac can provide a maximum power of 240 watts.
The Design of Data Collector to Calculate the Efficiency of DC to AC Inverter Based on ATmega328 and Micro SD as Storage Media Brahmana, Kurnia
Journal of Technomaterial Physics Vol. 2 No. 2 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i2.5405

Abstract

The data collector to calculate the efficiency of the pure sine inverter DC to AC based on the level of efficiency, voltage and current stored automatically in Micro SD has been successfully designed. This data collector is built from the Arduino Nano (ATmega328) module as the controller and uses a Micro SD Card as a storage medium. The equipment storage results are displayed in real time using the RTC and LCD as a display medium for the measurement results of the voltage sensor and current sensor. The data logger is designed to be useful for storing data from the measurement results of the DC to AC inverter which consists of voltage, current and data collection time. The data every 16 seconds will be stored automatically on the Micro SD. The results of the reading error of the voltage sensor and current sensor are 1.088% and 1.72%, respectively. The results of the error reading the voltage sensor and current sensor are still precise, so the efficiency obtained in this study is 78.37%.
The Design of DC 12 V to DC 380 V 1000 Watt Converter with ATmega328 as a 65 KHz Oscillator Brahmana, Kurnia
Journal of Technomaterial Physics Vol. 2 No. 2 (2020): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v2i2.5409

Abstract

A DC to DC converter has been built and research has been conducted to examine the effect of load on the output voltage of the DC to DC converter with fixed oscillation frequency. This converter DC to DC circuit uses a 12 V DC battery as an input voltage source connected with a step-up transformer until it is successfully raised to 380 V DC. The load given to the DC to DC circuit converter in the form of lamps, varies from 40 watts to 960 watts with a fixed oscillation frequency of 65 Khz that has been determined by the microcontroller. The test results showed that the output voltage value decreased in accordance with the increase in load so that when the load of 960 watts obtained the output voltage of 220 V DC.
Effect of Gelatinization Temperature on the Physical Properties of Porang (Amorphophallus oncophyllus) Starch Bioplastics with Sorbitol Plasticizer Ayu Mitri; Maghfirah, Awan; Brahmana, Kurnia; Sudiati
Journal of Technomaterial Physics Vol. 5 No. 1 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i1.10217

Abstract

Bioplastics are plastics that can be used like conventional plastics but can be more easily decomposed in the soil. Studies have been conducted to determine the effect of temperature variations in the gelatinization of porang starch on the manufacture of bioplastics with sorbitol plasticizers on their characterization. In this study, bioplastics have been produced which are made with variations in the composition of starch: chitosan (30:70) %, (40:60) %, (50:50) %, (60:40) %, and (70:30) % with the addition of sorbitol as a plasticizer and heating process at gelatinizing temperature variations of 70 ° C, 80 ° C, and 90 ° C. The results showed that the variation in gelatinization temperature affects the thickness, density, and absorbency of bioplastic water. Where the higher the temperature of gelatinization, the thickness of the bioplastics will decrease, the density of bioplastics will increase, and the absorption of bioplastic water decreases.
Improving Reading Accuracy of ACS712 Current Sensor with ATmega328 10-Bit ADC: Enhancing Resolution to 5Ma/BIT via AD620 Differential Amplifier and Kalman Filters Pardede, Josefan Osbert; Brahmana, Kurnia
Journal of Technomaterial Physics Vol. 5 No. 2 (2023): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v5i2.11355

Abstract

The study focuses on the development of a current measuring device that incorporates the ACS712 current sensor, enhances the reading sensitivity of the ACS712 current sensor from 27mA/bit to 5mA/bit through the implementation of an AD620 differential amplifier, and employs a Kalman filter for improved accuracy. This increase in current uses a differential amplifier AD620. An increase in the sensitivity of the reading is carried out by utilizing the initial value of the ACS712 sensor when it has not been connected to the circuit or an offset of 512 to 0 so that 10bit ADC data can be utilized to measure 4880 mV/A so that the accuracy of reading 1-bit data is equal to 4, 8 mV/mA after being given a gain of 26.5 times. The signal enhanced from the AD620 will be filtered using the Kalman filter program so that the signal generated after the increase will be stable, and the current value that has been read will be displayed on the LCD screen. Based on the analysis results, the ACS712 current sensor can effectively measure up to 5mA/bit stably using the AD620 differential amplifier and Kalman filter.
Comparing Energy Harvesting Efficiency between Solar Panels: Tracking the Sun vs Ground-Mounted 40 WP Panels Brahmana, Kurnia; Panjaitan, Wardaini
Journal of Technomaterial Physics Vol. 6 No. 1 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i1.13879

Abstract

This experiment aimed to evaluate the energy efficiency of a solar tracking panel compared to a ground-fixed solar panel. A 40 WP solar panel with a time-tracking mechanism was used to monitor the sun's movement from morning to evening, while a static 40 WP ground-fixed solar panel was also studied for comparison.The study also included the energy consumption of a 12 V DC motor responsible for orienting the tracking panel to face the sun. Throughout the day, the tracking panel's position was continuously adjusted to align with the sun's position, facilitated by a microcontroller and a gyroscope. The energy consumed by the motor during the tracking process was accounted for. The net energy output of the tracking panel was computed by subtracting the energy expended in tracking from the total energy collected. Following the experimentation, the collected data was analyzed to determine the energy efficiency of the tracking panel in contrast to the ground-fixed panel. The findings revealed that the tracking panel exhibited a 15 percent increase in energy efficiency compared to the ground-fixed panel. These results emphasize the potential benefits of solar tracking technology in optimizing energy capture from solar panels. The implications of these findings are valuable for advancing the design and implementation of solar energy systems, offering increased efficiency and sustainability.
Utilization of Bluetooth Module As An Additional Security of Arduino-Based Motorized Vehicles Kurnia Brahmana; Theresia Megarani
Journal of Technomaterial Physics Vol. 6 No. 2 (2024): Journal of Technomaterial Physics
Publisher : Talenta Publisher

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.32734/jotp.v6i2.17132

Abstract

The escalation in motorcycle ownership has paralleled a rise in theft incidents, challenging the efficacy of existing security measures. Despite the integration of standard security systems on motorcycles, the persistence of thefts underscores the need for innovative solutions. This study introduces a novel security device that leverages Bluetooth HC-05 technology and an ATmega328 microcontroller to address this issue. The proposed system transcends conventional security protocols by establishing a dynamic link between the motorcycle and its owner. An alarm is triggered when the distance between the paired Bluetooth devices exceeds a predefined threshold, signaling potential unauthorized movement. Moreover, the system is engineered to deactivate the motorcycle's ignition upon Bluetooth connectivity loss, immobilizing the engine and thwarting theft attempts. This advanced security mechanism enhances the protection of motorcycles by incorporating proximity-based alerts and automated engine shutdown features, offering a formidable deterrent against theft. The article delineates this security system's design, implementation, and potential impact, positioning it as a critical advancement in motorcycle anti-theft technology.
Co-Authors Ayu Mitri Emia Indahsari Ginting Maghfirah, Awan Panjaitan, Wardaini Pardede, Josefan Osbert Sudiati Tamba, Takdir Theresia Megarani