The smart exercise system is a therapeutic device designed to improve hand coordination and cognitive responses in children with special needs. It incorporates a 4×4 LED grid to guide screw-placement tasks, where LEDs sequentially illuminate to indicate the target positions for screws. The system employs Hall-effect sensors to detect the correct or incorrect placement of screws and a load cell (HX711 module) to measure the force applied during each action. An ESP32 microcontroller serves as the central processing unit, handling sensor data acquisition, task timing, and LED control.

The system logs the time taken for each screw placement and captures errors, enabling precise performance tracking. All data is transmitted to a web application in real time, where it is processed to generate detailed progress reports. These reports, available daily, weekly, and monthly, provide therapists with critical insights into the child’s motor skill development and task efficiency. Additionally, the system integrates an EEG module to monitor cognitive responses during tasks, offering real-time analysis of brain activity and engagement levels.