Volume 2 - Issue 2, March - April 2026

The aim of the research is to provide information about changes in vibration dynamics, especially at high frequencies. The method is providing the measurement installation from mini rotary engine with Arduino UNO and accelerometer to record the raw data from serial monitor in varied rotation of shaft. The result is the acceleration of a shaft due to an attached mass depends directly on the distance of the mass from the shaft center. The farther the load is placed, the greater the acceleration amplitude observed over time, while the oscillation frequency is governed by the shaft’s rotational speed. There is an interesting result, the highest vibration acceleration was obtained at the y1 axis. Therefore, y1 is the best position to determine the characteristics of rotary engine. By combining these parameters, it is possible to evaluate the stability, detect potential faults, and assess the health of rotating machinery or structural components.

Salman, Agus Dwi Catur, Paryanto Dwi Setyawan, I Made Adi Sayoga, I Dewa Ketut Okariawan,"Measurement of Vibration Signals of Rotating Machinery Based on FFT Spectrum" International Journal of Advanced Multidisciplinary Research and Educational Development, V2(2): Page(1311-1314) Mar-Apr 2026. ISSN: 3107-6513. www.ijamred.com. Published by Scientific and Academic Research Publishing.