Design and Implementation of PLC based Smart Coffee Maker

Abstract Automation is preferred in every production and service field to reduce human intervention to achieve high efficiency, reliability and less human effort. In this paper the design of a smart coffee maker is implemented using a Programmable Logic Controller (PLC). The proposed coffee machine includes eight different modes that offer hot drinks ranging from black coffee to white tea depending on the user’s input. Because of its durability and ease of installation and maintenance, the proposed Smart Coffee Maker system includes a PLC controller. Furthermore, the PLC monitors the input on a regular basis, and the actuators utilized in the project, such as the conveyor belt, various valves, and the lamp, are controlled based on the input and custom program downloaded in the PLC to achieve the automation of the coffee making process. Toggle switches are used to select the appropriate mode, while limit switches are used to assure the operation sequence by functioning as a control signal/input to turn the conveyor belt motor ON/OFF. The smart coffee maker technology has been tested in the laboratory and has shown to be effective.