Smart Continuous Passive Motion for Hand Rehabilitation

ABSTRACT Continuous Passive Motion (CPM) devices are essential tools in post-operative and neurological rehabilitation. This paper presents the design and implementation of a cost-effective, smart CPM device for hand rehabilitation using embedded systems. The device automates passive hand movements through a linear actuator controlled by a Node MCU microcontroller and L298N motor driver. The system is equipped with safety features such as limit switches and a real-time OLED display interface for enhanced usability. Experimental evaluation demonstrates reliable and repeatable motion, making the device suitable for home-based therapy in low-resource settings.