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 Dharma Yasa, K., Janardana, I., & Budiastra, I. (2020). RANCANG BANGUN SISTEM MONITORING NILAI pH DAN KADAR KEKERUHAN AIR PADA KOLAM TERNAK KODOK LEMBU BERBASIS IoT. Jurnal SPEKTRUM, 7(2), 29-35. doi:10.24843/SPEKTRUM.2020.v07.i02.p5