In the 21st century, strengthening students’ global wisdom is essential as part of the Sustainable Development Goals (SDGs) and the vision of Universitas Negeri Semarang (UNNES). This study aims to preserve the drinking tea culture through Ethno-STEM-integrated project learning and equip global diversity characters. The research subjects were 27 chemistry education students at Universitas Negeri Semarang taking the mini research course. Data were collected through observation, interviews, and experiments identifying herbal tea aroma compounds using a coffee maker integrated with an Arduino gas sensor. The following are the conclusions of this study: (a) Global diversity characters increase in the context of knowledge, attitudes, and cognitive skills after implementing Ethno-STEM-integrated project learning, (b) Scientific knowledge products are reconstructed based on Indigenous knowledge regarding drinking tea culture, tea making, benefits and responses to tea as local wisdom, (c) 27 Indonesian and global tea aroma volatile compound identified by the Arduino gas sensor are carbon monoxide, ammonia gas, propane, LPG, acetone, and ether. © (2024), (Elite Scientific Publications). All rights reserved.
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