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Wahyuningsih, Erfiana
Universitas Dian Nusantara, Jakarta, Indonesia
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Designing a Frequency Measurement Instrument Kit Based on the PIC16F628A Microcontroller Febriyani Pratiwi, Ganjar; Fenki Mahardika Prawiro, Roby; Wahyuningsih, Erfiana; Arifin, Tri Nur
International Journal of Science and Environment (IJSE) Vol. 6 No. 1 (2026): February 2026
Publisher : CV. Inara

Show Abstract | Download Original | Original Source | Check in Google Scholar | DOI: 10.51601/ijse.v6i1.380

Abstract

The rapid development of electronic systems has increased the need for accurate frequency measurement because many electrical and digital devices depend on stable operating frequencies for proper performance. In routine laboratory and field work, digital multimeters are frequently used for frequency checks due to their practicality and availability, yet their readings may be affected by signal conditions and instrument processing limits. This study aims to assemble and evaluate a low-cost digital frequency counter based on the PIC16F628A microcontroller for measuring crystal oscillators and external frequency signals, while benchmarking its readings against a digital multimeter. An experimental quantitative approach was applied that included hardware assembly, schematic reconstruction through PCB trace inspection, block-level functional analysis, and measurement testing using five crystal oscillators and externally generated reference signals derived from a 32.768 kHz source with frequency division. Data were recorded across test points from 1 Hz to 32.768 kHz and summarized through direct comparison between nominal frequencies and instrument readings. The frequency counter produced readings that matched the nominal test frequencies across all external test points within the display resolution limits. Crystal testing also yielded values close to nominal specifications (e.g., 8.0002 MHz for 8 MHz and 11.998 MHz for 12 MHz). The digital multimeter showed small frequency-dependent offsets at higher test points (e.g., 32.770 kHz at 32.768 kHz). These results indicate that the dedicated counter delivers stable measurements across the evaluated range. This work offers a practical reference for electronics education and routine verification by combining schematic reconstruction, reproducible block-level documentation, and empirical validation of a kit-based instrument, providing added value beyond prior studies that emphasize either theory or new system design.
Co-Authors Adhiyoga, Yohanes Galih Andrian Saputro Anindya, R.A.Sekar Ciptaning Anita Ratnasari Arifin, Tri Nur Azkiah, Neza Belinda Ayuningtyas Belinda Ayuningtyas Didin Hikmah Perkasa Difano Galiano S Dodi Rahmawan Dyah Nurainingsih Dyah Nur‘ainingsih Eri Prasetyo Wibowo, Eri Prasetyo Febriyani Pratiwi, Ganjar Fenki Mahardika Prawiro, Roby Ganjar Febriyani Pratiwi Hamzah Afandi Henri Septanto, Henri Irawan, Indra Ade Islamiah Kamil Islamiah Kamil Islamiah Kamil Istianingsih Istianingsih Kamil , Islamiah Komarudin Komarudin Lionie, Lionie Mahendra, Adhi Meiliyah Ariani, Meiliyah Narapati, Rama Aditya Nur‘ainingsih, Dyah Pratiwi, Ganjar Febriyani R.A.Sekar Ciptaning Anindya Rama Aditya Narapati Riesa Syariful Akbar RMS, Anggananda Berlian Rusdiyanto, Dian Sahril, Ridwan Sugeng, Margono Syaeful Ilman Syahdan Awaldi Tri Nur Arifin Widodo, Sulistyo WIDYASTUTI Widyastuti Yolifiandri