Since there are numerous sectors for patients with walking difficulties, such as stroke, sports, and medical rehabilitation, the study of human gait analysis has been an important endeavor for years. However, such research necessitates the use of equipment that can precisely quantify the movement of body parts. This paper outlines a development strategy for a small wireless internet of things (IoT) board, from embedded system design to kinematic data collection. The goal of this project is to develop an acquisition IoT board that can measure and collect the knee, hip, and ankle angles of a healthy person as well as a patient with certain diseases. An enclosure designed to house the board and its associated battery forms a wearable unit that can be attached to the lower limbs of humans. The electronic board design establishes an inner communication between a high-fidelity inertial measurement unit (IMU) and a microcontroller, as well as an outer communication between the microcontroller and the radio frequency (RF) module. The board design considers a bidirectional radio communication, though multiple boards are able to share, exchange, and pass IMU data to a personal computer as well.