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@article{177445,
        author = {Harsha Kathole and Anushka Warade and Prachi  Welkar and Vaishnavi Wankhade},
        title = {Arduino-Based Recognition of Hand Gesture Using Flex Sensor},
        journal = {International Journal of Innovative Research in Technology},
        year = {2025},
        volume = {11},
        number = {12},
        pages = {740-745},
        issn = {2349-6002},
        url = {https://ijirt.org/article?manuscript=177445},
        abstract = {This system presents an Arduino Nano based emergency notification system that utilizes hand gesture recognition to initiate real-time alerts. By integrating five flex sensors into a wearable setup, the system monitors finger movements and interprets specific gestures based on calibrated threshold values. When an emergency gesture is detected, the Arduino Nano triggers two key actions, it communicates with a GSM module to send an SMS alert to predefined contacts over long distances, and it activates an MP3 module to play a corresponding audio message, such as “Help.” This dual-alert mechanism enhances both the reliability and immediacy of the response. The system documentation includes detailed hardware schematics, wiring configurations, and sample code that integrates sensor data acquisition, SMS command sequences, and audio playback control. Through rigorous calibration and testing, the system demonstrates its potential as a cost-effective solution for personal safety, assistive technology, and smart wearable applications.},
        keywords = {Arduino Nano, Hand Gesture Recognition, Emergency Notification System, Flex Sensors, GSM Module, SMS Alert, MP3 Module, Audio Playback.},
        month = {May},
        }