Anyuca, Herbudi Bagas, and Andhi Akhmad Ismail. 2024. “Swing Motion Obstacle Detection Warning System Design In a Swing Area Based on Arduino Uno Using Ultrasonic Sensors for Excavator”. Jurnal Teknologi Dan Rekayasa Alat Berat 1 (2), 12-16. https://doi.org/10.22146/jtrab.v1i2.11917.