International Journal for Innovation Education and Research ISSN 2411-2933 01-07-2021 International Journal for Innovation Education and Research© 2021 pg. 214 Usage of Arduino-based Datalogger for thermal comfort variables monitoring William de Brito Pantoja Federal Rural University of Amazonia (UFRA) Belém, Pará, Brazil. Email: william.eng93@gmail.com Caio Castro Rodrigues Federal Rural University of Amazonia (UFRA) Belém, Pará, Brazil. Email: caiocastro.eng@gmail.com Otavio Andre Chase Federal Rural University of Amazonia (UFRA) Belém, Pará, Brazil. Email: otavio.chase@gmail.com Felipe Souza de Almeida Federal Rural University of Amazonia (UFRA) Belém, Pará, Brazil. Email: felipe.almeida@ufra.edu.br Antonio Thiago Madeira Beirão Federal Rural University of Amazonia (UFRA) Parauapebas, Pará, Brazil. Email: thiago.madeira@ufra.edu.br Katiane Pereira da Silva (Corresponding author) Federal Rural University of Amazonia (UFRA) Belém, Pará, Brazil. ORCID: https://orcid.org/0000-0001-7864-6467 Email: katiane.silva@ufra.edu.br Abstract Environmental monitoring is an effective tool to identify problems in anthropic areas, and the emergence of cyber-physical sensors contributes to technological advances in this area. This paper introduces a device based on the Arduino cyber-physical platform to monitor air temperature and relative humidity in real-