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Design and Build of Air Conditioners with Peltier Modules and PID Controls Mahesa Sangga Bhuwana; Rasyida Shabihah Zukro Aini
BEST Vol 6 No 2 (2024): BEST (Buana Electrical Science Technology): Journal of Applied Electrical, Scienc
Publisher : Universitas PGRI Adi Buana Surabaya

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.36456/best.vol6.no2.9714

Abstract

Air conditioners are among the technologies that have been increasingly common, as time has gone on, from personal comfort to room comfort. A multi-story building is one location that requires air conditioning. This is because the structure's air pressure will rise until a certain level, making the temperature too low, so air conditioning is necessary to maintain a comfortable temperature. Similarly, in tropical areas where the temperature exceeds what is reasonably comfortable. However, the current air conditioner technology has the potential to harm the environment. Since Freon, which is used in it, can pass through the ozone layer. Eventually, global warming will happen and the world will get hotter. The SHT21 sensor is the kind of sensor that will be utilized in this final project since it has strong and steady chemical resistance over time and uses the I2C interface. This type of sensor is also capable of being utilized as a calibrated ambient temperature sensor, with a digital output form already comprised. This sensor will enable us to create a PID system with feedback that monitors the temperature produced by the Peltier module along with reacting to controlled PID by delivering PWM into the driver, then subsequently transmits the signal to the Peltier module for monitoring. When the duty cycle is 100 percent or the PWM value is set to 255, the Peltier module generates a 12-volt voltage at its best. When duty cycle 0 percent or PWM value 0 is selected, the module stops functioning. It is anticipated that this system will advance toward a Freon-free air conditioning system.
Implementasi dan Evaluasi Alat Portable untuk Pengunduhan Data Setting dan Event Relay 20 kV dalam Mendukung Analisa Gangguan Jaringan di Gardu Induk Jarak Jauh Rafli, Rafli Pratama; Talakua, Eddy Lybrech; Bhuwana , Mahesa Sangga
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 13 No. 2 (2025): TELEKONTRAN vol 13 no 2 Oktober 2025
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v13i2.17753

Abstract

Abstrak - Penggunaan relay proteksi 20 kV sangat penting dalam sistem distribusi tenaga listrik untuk mendeteksi dan mengisolasi gangguan. Namun, proses pengunduhan data setting dan event sering terkendala ketika gardu induk berlokasi jauh dari pusat. Penelitian ini mengimplementasikan serta mengevaluasi kinerja alat portable pengunduh data setting dan event relay 20 kV berbasis komunikasi RS-485 (Modbus RTU). Metode penelitian meliputi perancangan perangkat, implementasi, serta pengujian di beberapa gardu induk. Hasil uji menunjukkan alat mampu mengunduh data setting dengan tingkat keberhasilan 100%, serta menghemat waktu lebih dari 70% dibanding metode manual. Data event terbaca lengkap dalam format COMTRADE dan CSV tanpa error frame hingga jarak kabel 15 meter. Alat beroperasi stabil dengan konsumsi daya rata-rata 85 mA dan durasi pemakaian aktif ±8 jam menggunakan baterai Li-ion 3000 mAh. Kebaruan (novelty) penelitian ini adalah implementasi alat portable mandiri tanpa laptop yang terbukti efisien untuk mempercepat analisa gangguan di wilayah terpencil, sehingga dapat meningkatkan keandalan jaringan distribusi.  Kata kunci : Relay 20 kV, Gardu Induk, Analisis Gangguan, Download Setting, Event Relay 
Integration of Multi-Platform IoT System for Earthquake Detection via Telegram and WhatsApp Nugraha, Satria Fitrah; Bhuwana, Mahesa Sangga; Hidayat , Dwi Taufik
Telekontran : Jurnal Ilmiah Telekomunikasi, Kendali dan Elektronika Terapan Vol. 13 No. 2 (2025): TELEKONTRAN vol 13 no 2 Oktober 2025
Publisher : Program Studi Teknik Elektro, Fakultas Teknik dan Ilmu Komputer, Universitas Komputer Indonesia.

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.34010/telekontran.v13i2.17817

Abstract

Earthquakes are natural disasters that can cause significant damage to infrastructure and endanger human lives. Therefore, early detection and rapid information dissemination are essential aspects of risk mitigation. Previous studies have developed earthquake detection systems based on the Internet of Things (IoT), but most were limited to a single communication platform, resulting in restricted information coverage and less optimal notification speed. This study aims to design and develop an IoT-based earthquake detection system integrated with multi-platform communication to provide real-time alerts via Telegram and WhatsApp applications. The system employs the MPU6050 sensor to detect ground vibrations, which are then converted into Richter Scale (SR) values as indicators of earthquake magnitude. If the SR value exceeds a certain threshold, the system automatically sends notifications to users through Telegram and WhatsApp, while simultaneously activating a buzzer and displaying information on the LCD. The test results indicate that the system can detect vibrations with SR values ranging from 0.67 to 5.10. The average notification delivery time was recorded at 1.4 seconds for Telegram and 2.6 seconds for WhatsApp. The contribution of this study is the integration of IoT with two popular communication platforms simultaneously, thereby expanding coverage, accelerating information delivery, and enhancing the effectiveness of earthquake disaster mitigation.