The work shows a new, low-cost, and portable device for upper limb rehabilitation, designed for use in home environments. It highlights the importance of early and continuous rehabilitation for individuals with mobility issues, such as stroke patients and the elderly. Traditional rehabilitation methods are often expensive and require supervision, so this device aims to provide a more accessible alternative. The device is an intelligent crank with embedded sensors to measure force, movement, and current. It can be used for both active exercises (driven by the user) and passive exercises (motor-assisted). The system is designed to be lightweight, adaptable, and user-friendly, with data-logging capabilities. This allows patients to exercise independently while still enabling healthcare professionals to monitor their progress remotely via data transmitted wirelessly or saved on an SD card. The paper presents initial test results on young, healthy individuals to validate the device’s functionality. It also displays the start-up results of the active device and checks for optimal results.