ATmega16 Microcontroller-based Automatic Coffee Brewing System using Pour Over V60 Technique

In this paper, an automatic coffee brewing system configured using pour over V60 technique is designed based on ATmega16 microcontroler. Due to the use of medium which has a shape like the letter V with a 60° angle in filtering process, therefore it is called as pour over V60 technique. An ATmega16 microcontroller is applied to make sure all the processes can be running automatically, as well as to store and execute the data during the process. In order the proposed system satisfies the expectation, some parametric studies are carried out during the design by inputing and measuring data such as water volume, coffee powder quantity, water temperature and extraction time into the system. From the experimentations, the system has been successfully making coffee with a ratio of 1:10 and resulting data collected in the microcontroller with water volume, coffee powder quantity, and water temperature of 215 ml, 21.02 gr, and 95°C respectively. In addition, from the experimental result, it is found that the accuracy of thermocouple sensor used to measure the water temperature is around 98%.