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Perancangan Aplikasi Tracking Kendaraan Berbasis Android Untuk Mengatasi Masalah Distribusi Pada Perusahaan Agen Lpg 3 Kg Tegar Kusuma Artha; Kusuma Artha, Tegar; Heryanto, Rudi; Prihandoyo, Muhammad Teguh
Journal of Applied Informatics Science Volume 2 Issue 1 (2026)
Publisher : GWS Tech Solution

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.65897/jais.v2.i1.77

Abstract

Distribusi LPG 3 Kg pada agen sering menghadapi berbagai permasalahan, seperti ketidaksesuaian rute pengiriman dan titik distribusi ke pangkalan. Hal ini menyebabkan penyaluran LPG menjadi tidak merata serta meningkatkan biaya operasional. Penelitian ini bertujuan merancang dan mengimplementasikan aplikasi tracking kendaraan LPG 3 Kg berbasis Android untuk meningkatkan efektivitas pengawasan dan distribusi. Metode penelitian meliputi analisis kebutuhan sistem, perancangan sistem menggunakan diagram UML dan ERD, pengembangan aplikasi dengan framework Flutter, serta pengujian fungsionalitas aplikasi. Aplikasi yang dikembangkan terintegrasi dengan Firebase sebagai basis data real-time dan Google Maps API untuk menampilkan lokasi kendaraan secara langsung. Hasil implementasi pada PT. Remaja Putra Baru Agen LPG 3 Kg di Kabupaten Tegal menunjukkan bahwa sistem mampu memantau pergerakan kendaraan secara real-time, menyimpan riwayat perjalanan, serta meminimalkan penyimpangan distribusi. Penerapan aplikasi ini dapat meningkatkan efisiensi operasional dan ketepatan pengiriman LPG ke pangkalan yang telah ditentukan sehingga distribusi menjadi lebih transparan dan tepat sasaran.
Development of portable color detector: its application for determination of Munsell Soil Color Syafutra, Heriyanto; Anam, Muhammad Khoirul; Ahmad, Faozan; Nadalia, Desi; Heryanto, Rudi; Antarnusa, Ganesha; Umam, Rofiqul; Takahashi, Hirotaka
SAINS TANAH - Journal of Soil Science and Agroclimatology Vol 22, No 1 (2025): June
Publisher : Universitas Sebelas Maret

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.20961/stjssa.v22i1.91351

Abstract

Soil color is a crucial indicator in soil science and agriculture; it provides information about soil properties and conditions. Typically, surveyors determine soil color by visually comparing the soil samples to the Munsell Soil Color Chart (MSCC). However, the accuracy of this method can be influenced by lighting conditions and the observer's subjectivity, leading to potential inconsistencies. This study introduces a portable color sensor device designed to improve the accuracy and consistency in determining the soil color and its MSCC notation compared to traditional visual methods. The device integrates a TCS3200 color sensor with a microcontroller to automate the color determination process. The device was validated by operating it to determine the color of 12 test paper sheets and four test soil types. The device can determine the color of the tested paper and soil well (100% accuracy); the result is displayed on the Liquid Crystal Display. It consistently achieved 100% accuracy for all measurements with varying ambient light intensity. The device is designed to be portable and easy to use, thus supporting field use for surveyors. Therefore, this device offers significant advantages in soil classification, fertility assessment, and environmental monitoring.