Articles
<![CDATA[Implementation of IoT Gateway based Raspberry Pi 3 B+ in Lora 433 Mhz Communication System on Flood Detection ]]>
<![CDATA[Hana Graceila Sitindjak]]>;
<![CDATA[Yuliarman Saragih]]>;
<![CDATA[Reni Rahmadewi]]>
<![CDATA[ VOLT : Jurnal Ilmiah Pendidikan Teknik Elektro Vol 7, No 1 (2022): April 2022 ]]>
Publisher : <![CDATA[Department of Electrical Engineering Education, Faculty of Teacher Training and Education ]]>
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DOI: 10.30870/volt.v7i1.15012
<![CDATA[Frequent floods in Indonesia cause many problems, therefore it is necessary to create devices with the implementation of Raspberry Pi-based IoT Gateways in the LoRa communication system. The gateway has a function as a performance informer and makes it easy to access the exchange of information data and the space to store a lot of data received from the node. To maximize the implementation, a Gateway was designed consisting of Raspberry Pi 3 B+, ESP-32, and LoRa 433 MHz. This research uses the Research and Development method. The data obtained includes how the Gateway works which will be displayed on the Raspberry Pi screen properly, monitoring the state of the water using Thinger io. Data were obtained from the Gateway and data transmission system from Gateway to Client as much as 42 times with an RSSI value of -53.3 dBm in very good condition at a distance of 1.54 km with a wajanbolic antenna and a very poor RSSI of -91.4 dBm at a distance of 8.32 km without a wajanbolic antenna. A poor RSSI value can cause an error. The results obtained from the experiments in the study showed that the implementation of Raspberry Pi-based IoT Gateways in the LoRa communication system on flood detection worked well.]]>
<![CDATA[SYNTHESIS AND CHARACTERIZATION ACTIVATED CARBON FROM FISH BONE BY USING ACTIVATOR CaCl2 ]]>
<![CDATA[Endah Purwanti]]>;
<![CDATA[Reni Rahmadewi]]>;
<![CDATA[Vita Efelina]]>;
<![CDATA[Iwan Sugihartono]]>
<![CDATA[ Jurnal Teknologika Vol 10 No 1 (2020): Jurnal teknologika ]]>
Publisher : <![CDATA[Sekolah Tinggi Teknologi Wastukancana ]]>
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<![CDATA[Activated carbon is a porous solid containing 85-95% carbon, produced from carbonaceous materials by heating at high temperatures. Activated carbon has a very large surface area so it is suitable for applications requiring large contact areas such as in the adsorption field. Activated carbon can be made from fish bones because fish bones are removed as a waste containing carbon elements that can be used as raw material for making activated carbon. In the manufacture of activated carbon, not only raw materials that need to be considered, but also the process of activation. Activation of the charcoal can be carried out using CaCl2. For charcoal base material from fish bones containing lots of Ca and Mg elements, in addition to using the activator, also the activation process needs to be immersed in H2SO4. Characterization of activated carbons of synthesis include water content test, ash content test, and functional group analysis using FTIR spectroscopy. Based on the results FTIR shows specific peaks for as charcoal activated charcoal based on the literature. Based on the determination of the test water content and ash content obtained by activated charcoal from fish bones has a water content of 4,1% and ash content of 28,1%.]]>
<![CDATA[Pengendali Wiper dan Washer Otomatis Menggunakan Sensor Hujan dan Sensor Debu Berbasis Arduino ]]>
<![CDATA[Reni Rahmadewi]]>;
<![CDATA[Wilma Nurrul Adzillah]]>;
<![CDATA[Endah Purwanti]]>;
<![CDATA[Vita Efelina]]>;
<![CDATA[Raka Wahyu Utama]]>
<![CDATA[ Jurnal Teknologika Vol 10 No 1 (2020): Jurnal teknologika ]]>
Publisher : <![CDATA[Sekolah Tinggi Teknologi Wastukancana ]]>
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<![CDATA[Safety in driving is an important thing that must be considered to avoid traffic accidents. One of the factors causing the accident is the weather with a percentage reaching 13%, the driver will not focus on driving the car. Wiper control technology and automatic washer are applied to facilitate humans in driving. This system reads the intensity of rain and dust with a sensor then automatically the data is processed with a microcontroller. The output used in this system uses a stepper motor and Washer pump motor. Uses Arduino Uno and Fuzzy logic to make it easy as an automatic control system. The experimental results obtained are the speed of movement of the Wiper adjusts to the amount of water and dust input intensity received by the sensor. The success value of the Matlab output with the manual count output value is 98.26%, between the value of the manual count output with the actual output value of 96.83% and between the Matlab output value with the actual LCD output value of 96.95%]]>
<![CDATA[KARAKTERISASI OPTIK EKSTRAK BAYAM MERAH (RED AMARANTH) UNTUK APLIKASI DYE SENSITIZED SOLAR CELL (DSSC) ]]>
<![CDATA[Vita Efelina]]>;
<![CDATA[Endah Purwanti]]>;
<![CDATA[Farradina Choria Suci]]>;
<![CDATA[Arnisa Stefanie]]>;
<![CDATA[Reni Rahmadewi]]>
<![CDATA[ Jurnal Teknologika Vol 10 No 1 (2020): Jurnal teknologika ]]>
Publisher : <![CDATA[Sekolah Tinggi Teknologi Wastukancana ]]>
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<![CDATA[We report how the prepare red amaranth extract. In this study, red amaranth extract was made using the maceration method. Energy is one of the basic needs for human life. One alternative to overcome the electricity crisis is the use of solar energy. Development of solar cells continues, until now many researchers are modifying basic materials using dyes commonly called Dye Sensitized Solar Cells (DSSC). This DSSC has great potential to be developed. Dyes commonly used as doping are synthetic and natural dyes. In this study using red spinach or red amaranth because red spinach has a pigment that can be used to substitute for synthetic colors. So far there has been no in-depth study examining the optical properties of the dye red amaranth extract material. Therefore, this research has carried out a study of the fundamental optical properties of the dye red amaranth extract material. Red amaranth extract caracterized by UV Vis and FTIR spectroscopy. Red amaranth absorbance occurs at wavelength of 432 nm and 663 nm.]]>
<![CDATA[SIMULASI ROOM COOLING AUTOMATION MENGGUNAKAN PROGRAMMABLE LOGIC CONTROLLER (PLC) ]]>
<![CDATA[Zaki Alvin]]>;
<![CDATA[Ulinnuha Latifa]]>;
<![CDATA[Reni Rahmadewi]]>;
<![CDATA[Rahmat Hidayat]]>
<![CDATA[ TESLA: Jurnal Teknik Elektro Vol 24, No 1 (2022): TESLA: Jurnal Teknik Elektro ]]>
Publisher : <![CDATA[Universitas Tarumanagara ]]>
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DOI: 10.24912/tesla.v24i1.16329
<![CDATA[The fuzzy logic method is a method that is not much different from the case that resembles the level of thinking of people's logical reasoning. It has two inputs from two different sensors with linguistic values or called membership degrees and the resulting voltage is 0 - 5.5 Volts. The PIR sensor will work optimally at a distance of 4 meters where for the sensitivity of the PIR sensor itself it can react in a time range of 3-4 seconds and for its own range of approximately 4 meters and on the LM35 sensor test that this sensor is better for temperature due to the sensitivity of detecting temperature when compared to a thermometer, this sensor will be able to stabilize the room temperature which is less precise, so that in making the room for automatic cooling the sensor works optimally in a room measuring 4 x 4 meters. ABSTRAK:Metode fuzzy logic merupakan metode tidak beda jauh dengan halnya yang menyerupai pemikiran tingkat penalaran logika orang. Memiliki dua inputan dari dua sensor yang berbeda dengan nilai linguistik atau disebut derajat keanggotaan dan tegangan yang dihasilkan dengan sebesar 0 - 5,5 Volt. Sensor PIR akan bekerja optimal pada jarak 4 meter dimana untuk sensitivitas sensor PIR sendiri dapat bereaksi pada rentan waktu 3 – 4 detik dan untuk lebar jangkauan sendiri pada kurang lebih 4 meter dan pada pengujian sensor LM35 bahwa sensor ini terhadap suhu lebih baik dikarenakan sensitivitas mendeteksi suhu apabila dibandingkan dengan termometer, maka sensor ini akan lebih dapat menstabilkan suhu ruangan yang kurang tepat, sehingga pada pembuatan ruangan untuk pendingin otomatis agar sensor bekerja secara optimal pada ruangan yang berukuran 4 x 4 meter. Kata Kunci: Room Cooling, Fuzzy Logic, Sensor LM35, Programmable Logic Control (PLC), Sensor PIR]]>
<![CDATA[Implementasi Sistem Kontrol Motor Ac Berbasis Arduino Uno Pada Alat Ecosystem (Evaporatif Cooler System) ]]>
<![CDATA[Rizki Sya'bani]]>;
<![CDATA[Reni Rahmadewi]]>;
<![CDATA[Dian Budi Santoso]]>
<![CDATA[ Jurnal JE-UNISLA : Electronic Control, Telecomunication, Computer Information and Power System Vol 6, No 2 (2021) ]]>
Publisher : <![CDATA[Universitas Islam Lamongan ]]>
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DOI: 10.30736/je-unisla.v6i2.693
<![CDATA[Globalization era has a negative impact on the environment, one of which is affected by temperature. The condition of a hot room can cause an uncomfortable feeling to move in the room. The best room temperature for human comfort is 29°.ECOSYSTEM is an air conditioner that uses an indirect evaporative cooling system with control using Arduino uno and an application. This tool is made to cool the air in the room with the control of a cellphone. This research can be proven to be successful because the program code with the tool runs well. From the experiment it is also proven that when the speed increases, the current, watts, and RPM increase linearly.With this ECOSYSTEM tool, it is able to cool the room compared to a fan. Although the power generated is greater. Because the components used are different from conventional fans.]]>
<![CDATA[Pengujian Tahanan Isolasi Trafo Tegangan Di Gardu Induk Telukjambe Karawang ]]>
<![CDATA[Samsul Bahri Siregar]]>;
<![CDATA[Reni Rahmadewi]]>
<![CDATA[ Jurnal JE-UNISLA : Electronic Control, Telecomunication, Computer Information and Power System Vol 6, No 2 (2021) ]]>
Publisher : <![CDATA[Universitas Islam Lamongan ]]>
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DOI: 10.30736/je-unisla.v6i2.689
<![CDATA[Electricity is a collection of components or electrical devices such as generators, transformers, transmission lines, distribution lines, and loads, which are connected and form a system. Maintenance is one of the most important things that must be considered in the operation of the electrical system. Voltage transformer is a device that transforms a higher system voltage to a lower system voltage for indicator equipment, measuring instruments, and relays. In this research, quantitatively, this is done by testing from the box panel on the voltage transformer and each coil has ameasuring limit, recording the test results is carried out at 60 seconds and there are 2 places, namely busbar 1 and busbar 2 and 6 measurements of insulation resistance on the transformer. voltage. This test is not on Phase R and Phase T because the equipment is being transferred to another substation. The results of the voltage insulation resistance test under normal and good conditions are above the minimum limit of insulation resistance and the voltage transformer is fully operational.]]>
<![CDATA[Aplikasi Pengendali Perangkap Tikus Berbasis Android Menggunakan Mit App Inventor ]]>
<![CDATA[Bikar Juniagoro]]>;
<![CDATA[Reni Rahmadewi]]>
<![CDATA[ Elkom : Jurnal Elektronika dan Komputer Vol 15 No 1 (2022): Juli : Jurnal Elektronika dan Komputer ]]>
Publisher : <![CDATA[STEKOM PRESS ]]>
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DOI: 10.51903/elkom.v15i1.797
<![CDATA[Perkembangan teknologi yang semakin maju khususnya dibidang elektronika dapat dimanfaatkan dari segala bidang misalnya perangkap tikus otomatis dengan memanfaatkan teknologi IoT yang dapat mempermudah pekerjaan manusia dan lebih efisien. Tujuan penelitian ini adalah untuk merancang dan membuat aplikasi pengendalian perangkap tikus berbasis Android. Pada arsitektur sistem menggunakan WiFi dan mikrokontroler untuk proses pengiriman data dari smartphone. Aplikasi Nangtik merupakan implementasi media IoT pada perangkap tikus otomatis. Aplikasi ini diharapkan dapat menjadi alternatif yang membuat penggunaan perangkap tikus otomatis ini lebih mudah dan ringan. Aplikasi dapat berkomunikasi dengan baik dengan perangkat keras. Waktu respon kontrol pengontrol perangkap tikus akan dipengaruhi oleh jarak antara smartphone dan perangkap tikus.]]>
<![CDATA[Pendeteksian Kematangan Buah Jeruk Dengan Fitur Citra Kulit Buah Menggunakan Transformasi Ruang Warna HSV ]]>
<![CDATA[Reni Rahmadewi]]>;
<![CDATA[Gina Lova Sari]]>;
<![CDATA[Hirlan Firmansyah]]>
<![CDATA[ JTEV (Jurnal Teknik Elektro dan Vokasional) Vol 5, No 1.1 (2019): Edisi khusus prosiding FORTEI 2019 ]]>
Publisher : <![CDATA[Universitas Negeri Padang ]]>
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DOI: 10.24036/jtev.v5i1.1.107560
<![CDATA[Penelitian ini bertujuan untuk menerapkan pemilihan kualitas buah Jeruk Pontianak dengan menggunakan metode ke ilmuan pencitraan digital. Ektrasi nilai citra RGB dan di konversi ke dalam bentuk HSV. Penggunaan nilai Hue sebagain indikator warna dan identifikasi warna citra Jeruk Ponitanak. Rentang nilai Hue (0.627 - 8.991), data ini diambil dari 10 buah sample jeruk terlalu matang, nilai Hue (11.914- 29.688), data ini diambil dari 10 sample buah jeruk matang, dan rentang nilai Hue (30.224 - 68.68) digunakan sebagai 10 buah sample jeruk mentah. Proses klasifikasi citra kulit jeruk menggunakan Aplikasi GUI MATLAB agar proses klasifikasi citra dapat dilakukan dalam waktu singkat]]>
<![CDATA[SIMULASI ROOM COOLING AUTOMATION MENGGUNAKAN PROGRAMMABLE LOGIC CONTROLLER (PLC) ]]>
<![CDATA[Zaki Alvin]]>;
<![CDATA[Ulinnuha Latifa]]>;
<![CDATA[Reni Rahmadewi]]>;
<![CDATA[Rahmat Hidayat]]>
<![CDATA[ TESLA: Jurnal Teknik Elektro Vol 24 No 1 (2022): TESLA: Jurnal Teknik Elektro ]]>
Publisher : <![CDATA[Universitas Tarumanagara ]]>
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DOI: 10.24912/tesla.v24i1.16329
<![CDATA[The fuzzy logic method is a method that is not much different from the case that resembles the level of thinking of people's logical reasoning. It has two inputs from two different sensors with linguistic values or called membership degrees and the resulting voltage is 0 - 5.5 Volts. The PIR sensor will work optimally at a distance of 4 meters where for the sensitivity of the PIR sensor itself it can react in a time range of 3-4 seconds and for its own range of approximately 4 meters and on the LM35 sensor test that this sensor is better for temperature due to the sensitivity of detecting temperature when compared to a thermometer, this sensor will be able to stabilize the room temperature which is less precise, so that in making the room for automatic cooling the sensor works optimally in a room measuring 4 x 4 meters. ABSTRAK:Metode fuzzy logic merupakan metode tidak beda jauh dengan halnya yang menyerupai pemikiran tingkat penalaran logika orang. Memiliki dua inputan dari dua sensor yang berbeda dengan nilai linguistik atau disebut derajat keanggotaan dan tegangan yang dihasilkan dengan sebesar 0 - 5,5 Volt. Sensor PIR akan bekerja optimal pada jarak 4 meter dimana untuk sensitivitas sensor PIR sendiri dapat bereaksi pada rentan waktu 3 – 4 detik dan untuk lebar jangkauan sendiri pada kurang lebih 4 meter dan pada pengujian sensor LM35 bahwa sensor ini terhadap suhu lebih baik dikarenakan sensitivitas mendeteksi suhu apabila dibandingkan dengan termometer, maka sensor ini akan lebih dapat menstabilkan suhu ruangan yang kurang tepat, sehingga pada pembuatan ruangan untuk pendingin otomatis agar sensor bekerja secara optimal pada ruangan yang berukuran 4 x 4 meter. Kata Kunci: Room Cooling, Fuzzy Logic, Sensor LM35, Programmable Logic Control (PLC), Sensor PIR]]>
