Design of Temperature Measuring and Controlling Systems in Cascara Vinegar Acid Bioreactor Duwi Hariyanto(1)(a), Afit Miranto(2), Daffa Naufal(2), Muhammad Nur Rafif(2), Muhammad Pramudhitya Hernanda(2), Ilham Marvie(3)
(1) Instrumentation and Automation Engineering Department, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Lampung Selatan, Indonesia
(2) Electrical Engineering Department, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Lampung Selatan, Indonesia
(3) Food Technology Department, Institut Teknologi Sumatera, Jl. Terusan Ryacudu, Lampung Selatan, Indonesia
Technological developments attracted researchers to present systems that can help human work become easier and more efficient, especially in the production process. The vinegar acid production of coffee peel (cascara) is crucial to extend the shelf life and increase the selling value. This study aimed to design a temperature measurement and control system in the cascara vinegar acid bioreactor. The Raspberry Pi 4 microcontroller integrated the DS18B20 sensor was used to measure the temperature of vinegar and cooling water. The rate and temperature of the cooling water were controlled using the microcontroller based on the sensor output and the temperature limit set by the user. Code editing software, Visual Studio Code was used to write, edit, and upload the program to the microcontroller. The programming languages used were Python and Java. The results showed that the characteristics of the DS18B20 sensor were suitable for application as a temperature detector in the production process of cascara vinegar acid.
