Rancang Bangun Alat Tukar Koin Laundry dengan Metode Pembayaran QRIS Berbasis RFID dan IoT

Trisnanto, Fariz Bima (2026) Rancang Bangun Alat Tukar Koin Laundry dengan Metode Pembayaran QRIS Berbasis RFID dan IoT. Other thesis, Institut Teknologi Sepuluh Nopember.

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Abstract

Infrastruktur pembayaran pada usaha layanan mandiri (self-service) seperti laundry koin di Indonesia saat ini masih menghadapi kendala inefisiensi operasional akibat ketergantungan pada koin fisik dan ketiadaan integrasi pembayaran digital. Masalah utama yang muncul meliputi antrean akibat ketiadaan uang pecahan kecil, beban pengelolaan uang tunai manual, dan ketidakakuratan mekanisme dispenser mekanik konvensional. Penelitian ini bertujuan untuk merancang bangun alat penukar koin otomatis berbasis Internet of Things (IoT) yang terintegrasi dengan sistem pembayaran digital QRIS (Quick Response Code Indonesian Standard) dan teknologi RFID (Radio Frequency Identification). Metode yang digunakan adalah rancang bangun dengan mikrokontroler ESP32 sebagai unit pemroses utama. Sistem verifikasi pembayaran dirancang menggunakan integrasi Application Programming Interface (API) dari Payment Gateway (Midtrans) dan protokol Webhook pada cloud hosting (Dewaweb). Selain itu, alat ini dilengkapi dengan modul RFID PN532 dengan antarmuka I2C untuk pencatatan sistem reward berupa poin keanggotaan (membership) secara terpusat di cloud. Hasil pengujian menunjukkan bahwa tingkat akurasi keluaran koin dari aktuator mekanik mencapai 100%. Antarmuka komunikasi perangkat keras beroperasi secara responsif dengan rata-rata latensi I2C sebesar 14,25 ms dan latensi UART layar HMI sebesar 11,5 ms. Pada komunikasi jaringan, protokol Webhook terbukti mampu memvalidasi pembayaran secara real-time dengan rata-rata 0,54 detik pada kondisi jaringan ideal. Meskipun terdapat fluktuasi latensi request API akibat perbedaan kualitas internet, implementasi algoritma fail-safe memastikan sistem tetap stabil dan terhindar dari anomali synchronous blocking. Secara keseluruhan, alat ini terbukti fungsional dalam memproses transaksi penukaran koin secara mandiri dan akurat.
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Payment infrastructure in self-service businesses such as coin laundries in Indonesia currently faces significant operational inefficiencies due to reliance on physical coins and the lack of digital payment integration. Major issues include queues caused by the unavailability of small change, the burden of manual cash management, and the inaccuracy of conventional mechanical dispensers. This study aims to design and develop an automatic, Internet of Things (IoT)-based coin dispenser integrated with the Quick Response Code Indonesian Standard (QRIS) digital payment system and Radio Frequency Identification (RFID) technology. The methodology used is prototyping, employing the ESP32 microcontroller as the main processing unit. The payment verification system is designed using Application Programming Interface (API) integration from a Payment Gateway (Midtrans) and Webhook protocols on cloud hosting (Dewaweb). Additionally, the device is equipped with a PN532 RFID module using an I2C interface for centralized membership point reward recording on the cloud server. Test results indicate that the mechanical actuator's coin dispensing accuracy reached 100%. Hardware communication interfaces operate highly responsively, with an average I2C latency of 14.25 ms and HMI screen UART latency of 11.5 ms. In network communication, the Webhook protocol proved capable of validating payments in real-time, averaging 0.54 seconds under ideal network conditions. Despite API request latency fluctuations due to varying internet quality, the implementation of fail-safe algorithms ensures the system remains stable and prevents synchronous blocking anomalies. Overall, the device has proven functional in processing coin exchange transactions independently, accurately, and transparently.

Item Type:	Thesis (Other)
Uncontrolled Keywords:	Alat Penukar Koin, Internet of Things, QRIS, RFID, Payment Gateway, Coin Dispenser
Subjects:	Q Science > QA Mathematics > QA76.76.A63 Application program interfaces T Technology > T Technology (General) > T59.7 Human-machine systems. T Technology > TJ Mechanical engineering and machinery > TJ213 Automatic control. T Technology > TJ Mechanical engineering and machinery > TJ223.A25 Actuators. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK5105.888 Web sites--Design. Web site development. T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK7871.674 Detectors. Sensors T Technology > TK Electrical engineering. Electronics Nuclear engineering > TK6570_iPhone (Smartphone). RFID. Mobile communication systems. T Technology > TS Manufactures > TS171 Product design
Divisions:	Faculty of Intelligent Electrical and Informatics Technology (ELECTICS) > Electrical Engineering > 20201-(S1) Undergraduate Thesis
Depositing User:	Fariz Bima Trisnanto
Date Deposited:	16 Jul 2026 07:59
Last Modified:	16 Jul 2026 07:59
URI:	http://repository.its.ac.id/id/eprint/134839

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