RANCANG BANGUN SISTEM KENDALI MODEL 2 PINTU BENDUNG OTOMATIS DAN MANUAL BERBASIS ARDUINO UNO

With the development of the era at this time, setting the water level of dams and reservoirs is very necessary when rainfall is erratic. As long as the door opens and closes manually, it requires performance considerations so that it can be controlled properly. This study uses ultrasonic sensors as object/target detectors, servo motors as drivers, LCDs the state of the water level, a Bluetooth module to operate the system manually via smartphone, and an Arduino Uno R3 to operate components. It consists of several stages in the design of the automatic and manual 2-door dam model control system, namely design, formation, and programming. This design uses the Pahl and Beitz method. The results of the calculation of the ultrasonic sensor with a water level distance of 5 cm it takes 34,442 seconds, and for a water level distance of 9 cm, it gets 19,134 seconds. The result of the comparison of distance and time is that the closer the object is, the faster the time will be. While the distance between the Bluetooth module and the smartphone in 2 conditions without obstruction reaches a distance of 14 meters with a disconnected condition and for obstacles, it reaches a distance of 6 the signal status is disconnected. The farther the range of the Bluetooth module frequency signal on the smartphone, the smaller the signal that can be obtained to open an open door