Temperature and Humidity Control System for Tempeh’s Fermentation Room Using Fuzzy Logic

Authors

  • Setrina Renita Padang State Polytechnic
  • Yul Antonisfia Padang State Polytechnic
  • Nadia Alfitri Padang State Polytechnic
  • Hilda Hanafiah Padang State Polytechnic

DOI:

https://doi.org/10.59890/ijatss.v4i4.221

Keywords:

Fermentation of Tempeh, Internet of Things, Mamdani Fuzzy Logic, Microcontroller, Sensor

Abstract

Tempeh is a traditional Indonesian food that requires precise temperature and humidity control during the fermentation process to produce the best quality. This research aims to design and implement an Internet of Things (IoT)-based automatic control system with the Mamdani fuzzy logic method to maintain the stability of the temperature and humidity of the tempeh’s fermentation room. The system utilizes a DHT22 sensor to read temperature and humidity in real-time, with data processing on an ESP32 microcontroller to control the fan, incandescent lamp, and mist maker. Monitoring data is sent to the Firebase Realtime Database so that it can be accessed online through the MIT App Inventor application. Testing for 22–24 hours showed that the system was able to maintain a temperature of 30–32°C and humidity of 68–75% as targeted, working stably according to the designed fuzzy logic. These results prove that the system is able to function well and support the efficiency of the tempeh fermentation process

References

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Published

2026-05-04

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Articles