<![CDATA[The rapid development of Industry 4.0 technologies has increased the importance of digital competencies among vocational high school students, particularly in the field of Internet of Things (IoT). However, many students still have limited practical experience in implementing embedded systems and real-time monitoring technologies in educational environments. This community service program aimed to improve the technical skills of students at SMK Negeri 2 Cimahi through training on the implementation of IoT systems based on ESP32 for school environmental monitoring. The program employed a participatory training approach consisting of theoretical sessions, hands-on workshops, sensor integration practices, and real-time data visualization using web-based monitoring platforms. The developed system was capable of monitoring environmental parameters such as temperature, humidity, and air quality within the school area. The results showed that students demonstrated significant improvement in understanding microcontroller programming, wireless communication, sensor integration, and IoT system development. Furthermore, the training enhanced students’ problem-solving abilities and readiness to face digital industrial challenges. In conclusion, the program contributed positively to strengthening vocational competencies and promoting technology-based learning innovation in schools.]]>
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