SumantriWaluyo, Joko2023-01-092023-01-092017-05-16https://repository.polibatam.ac.id/xmlui/handle/123456789/512The manual switch on motor cycle is used to inform a rider movement when they are taking left or right, it means the sign light can not turn on automatically as movement when the rider take a turn right but switch on left. Accelerometer attached on side of front tire and motor cycle body to detect angel of maneuver to be used as motor cycle parameter, and use fuzzy logic as control to make decision which one of sign lights will be turned on automatically. Data that come from 2 accelerometers as input will be processed by fuzzy in microcontroller until it got analog data output that decide the right one or left one of sign light will turn on. Kalman filter will process output data from accelerometer to reduce and minimize the noises so that data will become more stable. Next, all system will be tested with give it angel per 5° from 75° to 105° (each one 15° to right way and left way). Result shows that the system successful make sign light turn on as motorcycle movement with give angel accuration score of accelerometer about 96.6% at 0° until 5° and decrease if angel detected by sensor getting larger.idTeknik ElektroMekatronikaTeknik dan Ilmu yang BerkaitanIlmu Komputer, Pengetahuan, SistemThesis