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Ali Mustofa
Departemen Teknik Elektro, Universitas Brawijaya
Education

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RANCANG PLANT SISTEM SMART HOME DENGAN SENSOR PENDETEKSI KEBOCORAN GAS LPG Nawang Wulan Siti Nuridha; Endah Budi Purnomowati; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 10 No. 4 (2022)
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Along with the development of technology and the high mobility of the Indonesian population, microcomputer devices have been widely used in various aspects of daily life. There is a prototype smart home system that makes it easy for a family or individual who has high mobility and also for those who have physical limitations. In this study, the authors are interested in making an LPG gas leak detector in a smart home system. The tool in the system plant detects LPG gas using the MQ-5 sensor, Arduino UNO, DC motor, servo motor and LoRa Dragino Shield Dragino Clone. All of these tools use the Arduino IDE to process tools that are set up on the Arduino UNO. This plant tool also uses a meander-line microstrip antenna in order to expand the range of sending and receiving data to the control system. By using the MQ-5 sensor as a detector of LPG gas levels and with a LoRa communication tool which will later be processed on the Arduino Uno. This plant tool has a servo motor and a DC motor to reduce the level of LPG gas in the air around the plant system. The parameter measured is the level of LPG gas in the environment around the plant system in the form of ppm units. The MQ-5 sensor must be calibra
OPTIMASI JARINGAN 5G NEW RADIO BERDASARKAN PERFORMANSI JARINGAN 4G LONG TERM EVOLUTION DI AREA UNIVERSITAS BRAWIJAYA MALANG Talcha Krusbeek Orrilia; Ali Mustofa; Muhammad Fauzan Edy Purnomo
Jurnal Mahasiswa TEUB Vol. 10 No. 4 (2022)
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The demand and need for network services and mobile data services are very high, which encourages the use of 5G NR technology. Currently, 5G NR technology has not been fully implemented in Indonesia. As a result, a 5G NR MHz network planning was carried out in this study based on the performance of the 4G LTE network obtained from the drive test method in the area of Brawijaya University, Malang. The coverage planning uses the cost-hatta propagation model. This propagation model is used with the consideration of flexible frequency usage, and the city of Malang is an urban area. The purpose of this study was to determine the site location mapping (gNodeB) and 5G NR network coverage at Brawijaya University Malang. So the results can be taken into consideration in planning the 5G NR network. 5G NR network planning is created by calculate the cell radius, coverage, calculate the number of sites, and mapping them on a planning tool called Atoll. Keyword : Drive Test, Optimasi, Coverage Planning, 4G LTE, 5G NR
IMPLEMENTASI RASPBERRY PI SEBAGAI PENERIMA GELOMBANG FM PADA FREKUENSI VHF (136 MHz-174 MHz) MENGGUNAAN RTL-SDR 2832U May Lia Khoironisa; Sigit Kusmaryanto; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 10 No. 4 (2022)
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Raspberry Pi (Raspi) is a single-board computer (single-board circuit; SBC) that can be used to run office programs, computer games, and as a media player to high-resolution video. The Raspberry Pi has advantages that resemble computers in general, in every way on the computer functions can also be done with the Raspberry Pi. This paper discusses the application of the Raspberry Pi 3b+ as a VHF receiver at a frequency of 136 MHz-174 MHz using RTL-SDR R2832U. The author uses Handy-Talkie as a transmitter for FM waves at a VHF frequency (136 MHz-174 MHz). Raspberry Pi 3 implementation with RTL-SDR R2832U to receive FM waves using GNU Radio and GQRX software. The operating system used in this research is Raspberry Pi OS. The results show that the Raspberry Pi device can be used to receive FM waves at the VHF frequency (136 MHz-174 MHz) with SNR 58.82 dB at 136.025 MHz Dipole antenna examined using VNA (Vector Network Analyzer) with length 52.4 cm on each side and linear shape that can receive signal with VSWR 1.48:1 on frequency 136-174 MHz and return loss -14.2 dBm on frequency 136 MHz. Keywords: Raspberry Pi, RTL-SDR 2832U, FM Receiver
IMPLEMENTASI RASPBERRY PI SEBAGAI PENERIMA STASIUN RADIO FM PADA FREKUENSI 87,9 MHz – 105,3 MHz MENGGUNAKAN RTL-SDR 2832U Muhammad Danny Ramadhan Wibisono; Sigit Kusmaryanto; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 10 No. 4 (2022)
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In this modern era, the development of technology in the field of telecommunications is growing rapidly, especially with the needs of the global situation that relies more on long-distance communication. One of these developments is the emergence of the Raspberry Pi (Raspi) which is a single-board circuit (SBC) computer capable of being used as a medium for teleconferences, offices, Big Data, and high-resolution video players. The Raspberry Pi has advantages that resemble computers in general, everything in computer functions can also be done with the Raspberry Pi, but the Raspberry Pi has the advantage of being mini and portable. This study proposes the application of the Raspberry Pi 3b+ as a receiver for FM radio waves at a frequency of 87.9 MHz and 105.3 MHz using an RTL-SDR 2832U connected to a dipole antenna. The author uses signals from radio stations as transmitters of FM waves at frequencies of 87.9 MHz and 105.3 MHz. The implementation of the Raspberry Pi as an FM receiver in this study uses RTL-SDR 2832U with GNU Radio and GQRX software. The operating system used in this research is Raspberry Pi OS. The results show that the Raspberry Pi device can be used to receive FM waves at a frequency of 87.9 MHz and 105.3 MHz. The dipole antenna tested using VNA (Vector Network Analyzer) with a length of 81 cm for a frequency of 87.9 MHz and 66 cm for a frequency of 105.3 MHz and a linear antenna shape that can transmit signals with a VSWR of 1.29:1 at a working frequency of 87.96 MHz with a Return Loss of -23. dBm and 6 MHz bandwidth for 87.9 MHz frequency and 1.29:1 VSWR at 105.3.16 MHz working frequency with -29 dBm Return Loss and 8.4 MHz bandwidth for 105.3 MHz frequency. Keywords: Raspberry Pi, RTL-SDR, FM Signal, Software Defined Radio
TRANSMITTER GELOMBANG FREKUENSI RADIO (RF) FM BERBASIS RASPBERRY PI Bravy Dwika Nanda; Sigit Kusmaryanto; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 1 (2023)
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In recent years, technology in the telecommunications sector has developed rapidly, especially with the global situation encouraging the use of long-distance communications. One of these developments is the use of the Raspberry Pi, abbreviated as Raspi, as a substitute for conventional computers for receiving and transmitting FM radio signals. Raspberry Pi is a mini and portable computer that can be used as an alternative to conventional computers in general, such as the use of teleconference media, offices, Big Data, and as a video player with high resolution. The problem in using a computer as an FM radio signal transceiver system is its complex and expensive infrastructure. When compared to the Raspberry Pi 3 with a price range of IDR 500,000 - IDR 1,000,000, a transceiver system using conventional computers requires a computer in general at a price far exceeding the said price. Using Raspi makes it easy to transmit FM radio signals by simply coding through the Raspi terminal. In this study, the authors propose a transmitter system using a Raspberry Pi 3B+ which is connected to a dipole antenna at a working frequency of 100 – 101 MHz. Raspi is operated using the SSH protocol for remote desktops. The operating system used is Raspberry Pi OS with the use of a MAC computer (MAC OS) as a remote desktop. The results show that the Raspberry Pi device can be used to transmit FM radio signals at a frequency of 100 - 101 MHz. The dipole antenna tested using VNA (Vector Network Analyzer) with a length of 71 cm and a linear form can transmit a signal with a VSWR of 1.08 - 1.95:1 at a working frequency of 94.9 - 103.06 MHz and a return loss of -28.1 dBm at a frequency of 98.98 MHz.Keywords: Transmitter, FM Radio Signal, Raspberry Pi, Remote desktop, Vector network analyzer
RANCANG BANGUN PENGENDALIAN SUHU DAN INTENSITAS CAHAYA PADA KANDANG ANAK AYAM RAS PETELUR MENGGUNAKAN MIKROKONTROLER ESP32 Dio Izqhaq Risky Sasongko; n/a Nurussa’adah; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 3 (2023)
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Temperature is a very important factor during brooding, because it can affect the productivity of the chickens later. Not only the temperature that needs attention, but the lighting in the cage greatly affects the development of chicks to increase feed and water intake. The intensity of light also depends on the behavior / habits of the chickens. Required control of temperature and light in laying hens' cages is expected to make it easier for breeders or laying hens business actors in the process of maintaining temperature and light intensity in the coop so that it remains stable and can change the working system of laying hens breeders which are still manual to become automatic and more efficient . Each sensor is tested to test the error value with standard measuring instruments on each sensor. The DHT11 sensor gets an error value of 1.23% and the BH1750 sensor gets an error value of 0.96%. ESP32 as a microcontroller that processes data from the two sensors is then displayed on the Arduino IDE serial monitor which will later control temperature conditions and light intensity using a solid state relay to control the on/off of the 2 lights used, namely heating lamps and lighting lamps and will work as needed according to the age of the chicks. Keywords: Laying chicks, temperature, light intensity, DHT11 sensor, BH1750 sensor, ESP32, solid state relay, heating lamp, lighting lamp.
RANCANG BANGUN SISTEM PEMBERIAN MAKAN DAN MINUM PADA ANAK AYAM RAS PETELUR MENGGUNAKAN SENSOR LOADCELL DAN HC-SR04 Lutvy Dwi Pertiwi; n/a Nurussa’adah; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 3 (2023)
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Management of feeding and drinking is the key to the successful development of laying hens. Food left in the coop will be damp and a source of viruses so that the chicks can contract the disease. Lack of drinking can disrupt the growth of chicks because the amount of drinking determines the amount of food consumed. The feeding system is carried out at the same time every day, namely at 07.00, 15.00 and 21.00. Feeding is also given according to the needs of the chicks based on the age of the chicks. Meals are weighed using a loadcell sensor which is located where the chicken feed container is in the cage. The actuator used in the feeding system is a servo. The drinking system is carried out when the water in the container in the cage runs out. To detect the water level in the container in the cage, the HC-SR04 sensor is used. The actuator used in the drinking system is a DC water pump with a relay as an automatic switch. Water in the cage is provided throughout the day. All systems are controlled using the ESP32 microcontroller. Keywords: Laying Chicks, Feed, Drink, Loadcell, HC-SR04
RANCANG BANGUN SISTEM MONITORING SUHU, INTENSITAS CAHAYA, SISA PAKAN DAN MINUM KANDANG ANAK AYAM PETELUR BERBASIS INTERNET OF THINGS (IOT) Labib Ammar Fadhali; n/a Nurussa’adah; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 5 (2023)
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Poultry farming, especially laying hens, is a promising subsector of agribusiness that plays a vital role in improving the welfare of farmers and national development. The development of this poultry farming aims to increase livestock production to meet the needs of food, nutrition, and farmer income. In Indonesia, East Java is the largest producer of chicken eggs due to high consumption demand and the high nutritional content of eggs from laying hens. However, poultry productivity is influenced by various factors, such as breed, feed, nutrition, health, and cage conditions. Manual monitoring of the conditions of broiler chicken cages is considered inefficient, leading to the need for research to create an efficient and flexible broiler chicken cage monitoring system. The monitoring system employs sensors for temperature, light intensity, water level, and weight, capable of monitoring cage conditions in real-time through an Android smartphone using the Blynk platform. The test results show that each sensor exhibits high accuracy: temperature sensor 99.46%, light intensity sensor 99.37%, weight sensor 99.07%, and water level sensor 99.79%. Additionally, data transmission and notifications on Blynk were successful without any discrepancies, allowing data sent by the ESP32 to be accurately and promptly displayed on the LCD and Blynk when connected to the internet. Keywords: Temperature, Light Intensity, Food Weight, Water Level, Blynk
PENGARUH BENDING PADA ANTENA MIKROSTRIP TERHADAP POLA RADIASI DAN POLARISASI DENGAN ORIENTASI BENDING ARAH SUMBU Y Faizal Reza; Muhammad Fauzan Edy Purnomo; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 6 (2023)
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Antennas are expected to keep up with an era that requires flexible and wearable forms. In this use, it is possible to require bending of the microstrip antenna which changes the characteristics or parameters. In this research a microstrip antenna is designed with a 30-star ground plane patch in the form of a staircase working at a frequency of 2.4 GHz. Design and simulation were carried out in CST Studio Suite 2018 software and measurements were carried out with a Signal Generator and SpectrumAnalyzer. The simulation results show that bending causes yield degradation only in the parameters of the microstrip antenna, which is axial ratio that has an impact on polarization. And the measurement results show that there is degradation only in the axial ratio parameter which affects polarization. The smaller the bending radius that is done so that the antenna bends more, the way the antenna works will change. Keywords: Microstrip Antenna, Bending, Radiation Pattern, Polarization, Axial Ratio
PENGARUH BENDING DAN ANECHOIC CHAMBER PADA ANTENA MIKROSTRIP BINTANG 21 TERHADAP RETURN LOSS,VSWR DAN BANDWIDTH DENGAN ORIENTASI BENDING ARAH SUMBU Y Muhammad Fathan Romadhon; Muhammad Fauzan Edy Purnomo; Ali Mustofa
Jurnal Mahasiswa TEUB Vol. 11 No. 6 (2023)
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Mikrostip antennas have various dimensions and placements that depend on needs. In some antennas, especially antennas placed on uneven surfaces, it can allow bending of the microstrip antenna which can affect the characteristics or parameters of the antenna. In this study, a microstrip antenna with a 21-star patch with a staircase shape on a groundpalne that worked at a frequency of 2.4 GHz. Design and simulation were carried out using CST studio suite 2021 software and measurement were carried out with nanoVNA SAA2. The simulation results show that bending causes degradation in the microstrip antenna parameters which include return loss and vswr. On the contrary, the measurement results show that there is an increase in performance on the return loss and vswr parameters. The results of the antenna measurements carried out in the anechoic chamber did not have a significant effect on the vswr parameters, return loss, bandwidth and impedance. Radiation pattern, polarization, gain, and other antenna parameters related to radiation in free space are the right parameters to be measured in the anechoic chamber. Keywords :Microstrip, Bending, Return Loss, VSWR, Bandwidth, Impedance, Anechoic Chamber
Co-Authors Bravy Dwika Nanda Dio Izqhaq Risky Sasongko Endah Budi Purnomowati Faizal Reza Kusmaryanto, Sigit Labib Ammar Fadhali Lutvy Dwi Pertiwi May Lia Khoironisa Muhammad Danny Ramadhan Wibisono Muhammad Fathan Romadhon Muhammad Fauzan Edy Purnomo n/a Nurussa’adah Nawang Wulan Siti Nuridha Talcha Krusbeek Orrilia