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All Journal STRING (Satuan Tulisan Riset dan Inovasi Teknologi)
Niswati, Za’imatun
Universitas Indraprasta PGRI
Computer Science & IT Mathematics

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Perancangan IoT Sistem Pengukur Kekeruhan Air dan Pemberi Pakan Ikan Berbasis Android Kostaman, Ade; Niswati, Za’imatun; Abdillah, Rahman
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 8, No 2 (2023)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v8i2.14113

Abstract

Moving to the automation era is a big step in human civilization. The use of integrated automation technology with the help of internet connectivity, known as IoT, has helped a lot in human life. The aim of this research is to design a water turbidity measuring device and ornamental fish feeding sensor that can be controlled remotely using the Android-based internet. The research method used is an experimental method by conducting trials (trial error). Each module/sensor is tested one by one so that it can function as planned. Components tested include: Servo motor, ultrasonic sensor, turbidity sensor. Test result at a servo motor opening time is of 350 ms, the weight of the food released is 5.3 grams with an error percentage of 5.6%. When the servo motor is opened at 650 ms, the weight of the feed released is 10.2 grams with an error percentage of 2.4%. When the servo motor is open for 1000 ms, the weight of the food released is 15.2 grams with an error percentage of 1.84%. The ultrasonic sensor has an average error in detecting food residue of 3.01%, and the turbidity sensor detects turbidity by dividing it into 3 types of water, namely clear water, turbid water, and very turbid water. The results of the research are an Android-based water turbidity meter and ornamental fish feed sensor that can ensure fish food intake is adequate, especially when the owner travels far from home.
Sistem Informasi Tracer Study Berbasis Web Menggunakan Konsep Restful AP Web Service pada SMK Negeri Karang Baru Niswati, Za’imatun; Syukriansyah, Syukriansyah; Marlina, Dwi
STRING (Satuan Tulisan Riset dan Inovasi Teknologi) Vol 10, No 1 (2025)
Publisher : Universitas Indraprasta PGRI Jakarta

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.30998/string.v10i1.26210

Abstract

Vocational High Schools (SMK) aim to prepare graduates to be ready to enter the workforce or become enterpreneurs. To evaluate the quality of education and support the development of educational systems and mangement, tracer studies are essential. However, SMK Negeri 1 Karang baru does not yet have a tracer study application, resulting in alumni data being collected manually and inefficiently. Various studies have been conducted on the development of web-based tracer study applications in vocational high schools (SMK), but most still use conventional approaches and have not implemented RESTful API as a web service. Until now, no studies have been found that specifically develoved a web-based tracer study application using a RESTful API architecture to support system interroperability and flexibility. This study aims to develop a web-based tracer study application a RESTful API as the backend, in order to improve the efficiency of alumni data processing and facilitate cross-platform access. The implementation if focused on SMK Negeri 1Karang Baru as a case study.
Co-Authors Abdillah, Rahman Kostaman, Ade Marlina, Dwi Syukriansyah, Syukriansyah