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All Journal Jurnal Teknik Elektro dan Komputer TRIAC AUTOCRACY: Jurnal Otomasi, Kendali, dan Aplikasi Industri ELECTRA : Electrical Engineering Articles Jurnal Sistem Cerdas dan Rekayasa
Sari, Churnia
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Computer Science & IT Control & Systems Engineering Decision Sciences, Operations Research & Management Electrical & Electronics Engineering Energy Engineering

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RANCANG BANGUN ALAT UKUR SUHU DAN KELEMBABAN TANAH MENGGUNAKAN ARDUINO UNO DENGAN PERHITUNGAN MAPE (MEAN ABSOLUTE PERCENTAGE ERROR) PADA LAHAN PERKEBUNAN Fitrianto, Dwiki; Sari, Churnia
ELECTRA : Electrical Engineering Articles Vol. 3 No. 1 (2022)
Publisher : UNIVERSITAS PGRI MADIUN

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.25273/electra.v3i01.13642

Abstract

Pada saat ini petani kebun sangat kesusahan mencari sebuah alat karena tidak adanya sosialisasi tentang tekhnologi alat ukur suhu dan kelembaban dan alat ukur suhu dan kelembaban yang sudah ada termasuk mahal. Penelitian ini dilaksanakan di Perkebunan Teh Kemuning Kecamatan Ngargoyoso Kabupaten Karanganyar dan Perkebunan Jagung dan Tebu di Desa Soco Kecamatan Bendo Kabupaten Magetan. Metode yang digunakan dalam penelitian ini observasi untuk mengetahui suhu dan kelembaban pada lahan perkebunan. Pengukuran suhu tanah menggunakan sensor suhu tanah DS18B20, kelembaban tanah menggunakan sensor sensor soil moisture (Kelembapan Tanah) YL-69 dan Arduino Uno sebagai mikrokontroller. Uji kelayakan alat dengan menghitung hasil dari penelitian dengan perhitungan MAPE (Mean Absolute Percentage Error). Pengujian di kebun teh kemuning didapat rata-rata suhu tanah 19°C, kelembaban 37.24%-42.22% dengan perhitungan MAPE 0.047%. Pengujian di kebun jagung didapat rata-rata suhu tanah 29.75°C, kelembaban 79.56%-84.26% dengan perhitungan MAPE 0.050%. Pengujian di kebun tebu didapat rata-rata suhu tanah 29.87°C, kelembaban 24.14%-32.94% dengan perhitungan MAPE 0.066%. Kesimpulan yang diambil Arduino Uno sebagai mikrokontroler, sensor suhu tanah menggunakan sensor suhu tanah DS18B20, sensor kelembaban tanah menggunakan sensor sensor soil moisture (Kelembapan Tanah) YL-69, LCD sebagai output dari mikrokontroler bekerja dengan sangat baik di dukung dengan perhitungan MAPE <10%. 
Pemantauan Detak Jantung Berbasis Sensor MAX30102 Alkhoir, Qonita; Alfarizy, Firnas; Dwinugroho, Fahrul Ridho; Taryudi; Sari, Churnia
Autocracy: Jurnal Otomasi, Kendali, dan Aplikasi Industri Vol 8 No 1 (2026): Otomasi, Kendali, dan Aplikasi Industri
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/autocracy.081.03

Abstract

Heart rate monitoring is an important effort in maintaining cardiovascular health, considering that heart rhythm disorders such as bradycardia and tachycardia can pose serious health risks if not detected early. This study designs and implements a heart rate monitoring system based on the photoplethysmography (PPG) method using an optical sensor capable of measuring heart rate in real time, displaying values in beats per minute (BPM), and classifying heart rate conditions into bradycardia, normal, and tachycardia categories. The test results show that the system produces stable heart rate readings with an average error of 3.86%, resulting in a measurement accuracy of 96.14% under resting conditions. The developed system is simple, portable, and low-cost, making it a potential solution for independent health monitoring and early detection of heart rhythm disorders. Keywords: Heart rate, photoplethysmography, monitoring system, cardiovascular health
Analisis Perbandingan Hasil Pengukuran Detak Jantung dan SPO2 Dengan Sensor MAX30100 Berbasis Mikrokontroler Atmega328P dan Pulse Oximeter Rizky Wijaya, Aura; Dhiyaa' Marda, Muhammad; Taryudi; Sari, Churnia
Autocracy: Jurnal Otomasi, Kendali, dan Aplikasi Industri Vol 8 No 1 (2026): Otomasi, Kendali, dan Aplikasi Industri
Publisher : LPPM Universitas Negeri Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21009/autocracy.081.04

Abstract

Heart rate is an important indicator for assessing an individual’s health condition. Measuring heart rate is essential to detect changes in physical health, particularly during physical activities such as exercise. This study aims to design and develop a heart rate monitoring system using the optical sensor MAX30100 based on the Arduino Atmega328P platform. The sensor is utilized to detect changes in blood volume at the fingertip using the photoplethysmography (PPG) method. The data obtained from the sensor are processed by the microcontroller to calculate the heart rate value in beats per minute (BPM), which is then displayed on a 16x2 I2C LCD screen, allowing users to directly observe the measurement results.
Sensorless Solar Tracker Optimization on Photovoltaic (PV) Firmansyah, Arizhal; Yuniahastuti, Irna Tri; Sari, Churnia
Jurnal Teknik Elektro dan Komputer TRIAC Vol 11, No 2 (2024): Oktober 2024
Publisher : Jurusan Teknik Elektro Universitas Trunojoyo Madura

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.21107/triac.v11i2.27073

Abstract

The development of renewable energy technology is getting more rapid, one of which is using solar energy through photovoltaic (PV) systems. A solar tracker is a device used to optimize the absorption of sunlight by solar panels by following the sun's movement. However, using sensors on solar trackers often requires quite complicated manufacturing. Therefore, this research aims to design a sensorless solar tracker on a photovoltaic (PV) system. The method in this study is to attach the actuator motor to the solar panel frame and move it automatically using Arduino Uno. Data was collected in real-time within three days using three different power supplies. Data collection started at 09.00 WIB with a solar panel tilt of 45° and went to 15.00 WIB with a solar panel tilt of 135°. The results of measurements using a solar tracker on photovoltaic (PV) obtained an average current of 0.74 amperes (A), an average voltage of 18.7 volts (V), and an average power of 14.4 watts (W).
Co-Authors Akbar, Dian Faisal Alfarizy, Firnas Alkhoir, Qonita Ardiansyah, Tedy Dhiyaa' Marda, Muhammad Dwinugroho, Fahrul Ridho Firmansyah, Arizhal Fitrianto, Dwiki Irna Tri Yuniahastuti Muhammad, Iqbal Maliku Nur Solikin Olanda, Beto Pratama, Aldio Wahyu Putra Putra, Yudha Didit Ardianata Rizky Wijaya, Aura Susilo, Dody Taryudi Yuniahastuti, Tri