AccelStepper motor_J1(1, STEP_PIN_J1, DIR_PIN_J1); AccelStepper motor_J2(1, STEP_PIN_J2, DIR_PIN_J2); AccelStepper motor_J3(1, STEP_PIN_J3, DIR_PIN_J3); AccelStepper ...

% OUT = IM2COL(IM) is a matrix (NxP) where each row represents a single % of the image IM (HxWxP). The pixels are in image column order (ie. column % 1, column 2 etc) and there are N=WxH rows. % OUT = ...