Widadi, Sigit, Zulfikar Adli Manzila, Irfan Ahmad, and Omar tanane. “Aroma Electric Therapy Equipment With Atmega8 -Based Heart Rate Monitoring”. Journal of Robotics and Control (JRC) 1, no. 2 (January 27, 2020): 49–54. Accessed September 5, 2025. https://journal.umy.ac.id/index.php/jrc/article/view/7724.