Скачать или смотреть MATLAB + Arudino: Joystick Control over Graphics

I demonstrate how to control the position of a MATLAB graphical object using an Arduino joystick. I use a very methodical approach, building and testing as I go along.

Here, the approach is to use the joystick to specify an increment (dx and dy) for the x and y coordinates of the patch vertices. We also use logical statements to constrain the movement within limits, which we can specify.

I also added to the end of the video a variation on the theme: rather than focus on the coordinates of the patch vertices, I focus on controlling a single point, and we situate the patch around the coordinate of interest. This is useful when we are interested in a point location, and it’s simpler than managing the vertices.

For more on finding the Arduino port on a Mac, see here:    • Arduino + MATLAB on Mac: Find your Arduino...  

For making a movable icon (patch), see here:    • MATLAB Graphics: Animated Patch  

0:00 Start
1:22 Connection to the Arduino
1:40 Find the Arduino port on a Mac
2:25 Pin setup
3:36 Joystick testing
3:50 Troubleshooting a mistake
5:00 Correct button operation
5:43 Reading the joystick position (x, y)
6:55 Making the joystick interactive
7:50 Testing the joystick
8:17 Error: joystick press doesn't work
9:35 Controlling an icon using the joystick
11:45 Calibrating the joystick
12:55 Controlling patch velocity using joystick
14:04 Joystick test
14:24 Modifying the joystick control (up/down)
15:31 Joystick test
17:20 Constraining the icon so it stays on screen
23:21 Tracking the center of the patch