Drawing Arm

We are going to build a drawing arm that is controlled by a joystick and several motors. To move around the paper, the arm will consist of two stepper motors, one for motion in the x-direction and one for the y-direction. The joystick will also have a select button, which will control whether or not the arm is drawing while it is in motion. Another stepper motor will respond to this button press to lift and lower the pencil onto the paper. We will also implement an SD card that saves previous drawing directions so that the arm can automatically redraw previous drawings*. Multiple drawings can be saved at once, and a selection can be made using the onboard joystick and LCD screen.