-3bf97310184a13a8c1e-53ce 20221223054429899 beie:beie director@blueeyesintelligence.org WEB-FORM International Journal of Recent Technology and Engineering (IJRTE) IJRTE 22773878 10.35940/ijrte.2277-3878 https://www.ijrte.org/ 01 30 2023 11 5 Department of Electrical Engineering, Universitas Muhammadiyah Purwokerto, Jawa Tengah, Indonesia M. Taufiq Tamam https://orcid.org/0000-0002-7993-2382 Arif Johar Taufiq https://orcid.org/0000-0001-8023-8796 Department of Electrical Engineering, Universitas Muhammadiyah Purwokerto, Jawa Tengah, Indonesia. Dr. Anis Kusumawati Medical Faculty, Universitas Muhammadiyah Purwokerto, Jawa Tengah, Indonesia. Traffic accident data shows an upward trend. One of the contributing factors is the condition of the driver who is tired or sleepy due to decreased oxygen saturation in the blood (SpO2). If the oxygen saturation in the blood (SpO2) decreases, the oxygen supply to the brain also decreases, which causes the driver to feel tired or sleepy, even to shortness of breath. By using a pulse oximeter sensor mounted on the wrist, oxygen saturation in the blood (SpO2) can be detected. The results of the sensor readings are then sent using blue tooth technology to the microcontroller and displayed on the monitor. If the driver is tired or sleepy, there will be a warning that the driver should take a rest immediately. Based on the results of trials that have been carried out, the average error in measuring blood oxygen saturation (SpO2) is 0.52%. 01 30 2023 5 8 CC BY-NC-ND 4.0 10.35940/BEIESP.CrossMarkPolicy www.ijrte.org true Funding from the Ministry of Education, Culture, Research and Technology Republic of Indonesia with a contract number 036/E5/PG.02.00/2022. Not conflicts of interest to the best of our knowledge We are a research team We are a research team We are a research team Not applicable The first author is responsible for the course of the research and coordinates with the team in designing and realizing the research. The second author is responsible for testing the data on the system. The third author is responsible for analyzing the parameters of the measurement data. Not applicable 10.35940/ijrte.E7382.0111523 https://www.ijrte.org/portfolio-item/E73820111523/