JALES: Just Aligned Learning Enhancement System

Poor upper-body posture is increasingly common among students, office workers, programmers, and athletes due to prolonged sitting, extensive screen use, and repetitive upper-back movements. These habits contribute to shoulder and thoracic strain, which can develop into chronic musculoskeletal disorders affecting comfort, productivity, and long-term health. Existing posture solutions, such as rigid braces and camera-based monitoring systems, often restrict natural movement, require user effort, or lack consistent accuracy, making them unsuitable for continuous daily use.

To address this gap, we propose JALES, the Just Aligned Learning Enhancement System. JALES is a smart wearable posture-monitoring shirt that automates posture tracking and provides immediate user feedback. The system integrates lightweight IMU sensors positioned along the shoulders, and upper back, connected to an Arduino Nano 33 BLE for real-time processing. When forward head posture or slouching is detected, an embedded ERM vibration motor delivers gentle haptic feedback to encourage correction. Posture data is streamed to a mobile application via Bluetooth Low Energy, where users can view real-time orientation, historical logs, and automatically generated daily and weekly summaries. Persistent poor posture triggers alerts and personal recommendations are generated through an integrated AI chatbot.

The shirt is constructed using a stable cotton–elastane fabric that preserves sensor alignment without compromising comfort or mobility. Combined with reliable BLE communication and an intuitive mobile interface, JALES provides continuous, unobtrusive posture monitoring during work, study, and physical activity. By automating feedback and simplifying progress tracking, the system encourages healthier habits, reduces upper-body strain, and delivers a practical, user-centered solution to a prevalent ergonomic problem.

Project Details

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