Figure 2
From: Assessment of Joystick control during the performance of powered wheelchair driving tasks
Apparatus used for recording joystick control. A: Modified joystick used to record biaxial (X-Y) movements, replaced the PW's original joystick of the same model. B: The central module receives biaxial joystick signals. C: Biaxial information is then sent to a tablet PC sampling at 200 Hz for data viewing and acquisition. D: Triaxial accelerometer and biaxial gyroscope (data not presented).