I'm attempting to do a quick and dirty autonomous path with the create2. I'm using the tethered driving program seen here.

I set my own buttons just to make it rotate 90° and go forward one "pulse". I'd like to know, does anyone have any ideas on how to trick the attached Create2_TetheredDrive.py into thinking it's seeing a series of keyboard entries?


1 Answer 1


You can try putting your series of commands (or keyboard entries) as an array. After which, you can assign a for loop for this button, which will then run through the array of instructions.

The array might look something like this:

cmds = ['self.callbackKeyRight', 'self.callbackKeyDown',  'self.callbackKeyDown']

and the for loop code to run the array might look something like this:

 if event.type == '2': # KeyPress; need to figure out how to get constant
        if k == 'Z':   # Set some key here
            for i in range(len(cmds)):
                cmds[i] = True
                motionChange = True
                print 'Cmd number: ' + i
  • $\begingroup$ I implemented that code as you wrote it. I get the following error: Exception in Tkinter callback Traceback (most recent call last): File "usr/lib/python2.7/lib-tk/Tkinter.py", line 1535, in call return self.func(*args) File "Home/pi/Desktop/FILE", line 240, in callback Key cmds[i]=True NameError: Global name 'cmds1" not defined Is there a particular place I should put the array to define it as global? Right now I put it under "def callbackKey...global cmds1" $\endgroup$
    – L.P.
    Nov 13, 2016 at 23:51
  • $\begingroup$ However, if I just declare cdms1 within the command (under "elif k=='1':), and comment out the line "cmds1[i]=True", the shell displays the array, but doesn't actually carry out the command (convert it to the ASCII characters for the create). Any ideas? $\endgroup$
    – L.P.
    Nov 13, 2016 at 23:55
  • $\begingroup$ Maybe you can try writing a function with args that calls the callbackkey through the array instead of calling the keys directly from the array. $\endgroup$
    – Photon
    Nov 26, 2016 at 7:57

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