Warning: file_get_contents(https://ojs.journalbusiness.my/ojs.php): failed to open stream: HTTP request failed! HTTP/1.1 404 Not Found in /var/www/ojs.unud.ac.id_backup/lib/pkp/includes/functions.inc.php on line 4 Lukito, P., Supardi, I., & Ratini, N. 2023 Aug 5. Rancang Bangun Alat Pendeteksi Detak Jantung Dengan Metode Photopletysmograph Berbasis Mikrokontroler ATMega328. BULETIN FISIKA. [Online] 24:2