Design and Build of Control System Automatic Microcontroller for Passion Fruit Juice Extractor

In fruit processing factories or industries, especially for purple passion fruit variety, the fruits are squeezed to extract passion fruit concentrate. However, the separation of seeds from the fruit pulp is currently done using a blender, resulting in a mixture of seeds and pulp. In the passion fruit syrup industry, seeds and fruit pulp are separated using a spinner machine. However, a few of the passion fruit squeezing spinner machines that have been designed are still operated manually by operators. This means there is potential for optimization and improvement by adding an automatic mechanism. This research aims to develop a passion fruit squeezing machine with maintenance and automation, upgrading the passion fruit filtering and squeezing spinner machine. The purpose is to control the speed of the passion fruit filtering motor using an AC Dimmer module and create an efficient automated tool for the passion fruit mixer and extractor machine. In this study, a squeezing machine is designed by utilizing a counter module to count the incoming passion fruits into the squeezing machine cylinder, and an Arduino Uno is used as the controller to adjust the motor speed using an AC dimmer. The passion fruit filtering machine is operated at a minimum triggering angle of 130 degrees and a maximum triggering angle of 80 degrees, or voltages ranging from 69.9 V to 102 V, with a minimum speed of 780 RPM and a total rate of 1462 RPM, and the squeezing time varies from 2 minutes to 4 minutes. If the voltage is lower than 69.9 V, the machine operates too slowly, leading to an extended duration for separating fruit pulp and seeds. On the other hand, if the voltage exceeds 102 V, the motor rotates too quickly, causing the passion fruit pulp to overflow and the machine to vibrate.