After mapping F12 to O+P with Karabiner elements, maestro cann't simulate the F12 keystroke

Questions & Suggestions
#1

All I want to do is pressing O+P simultaneously which cann't be done by maestro alone. After mapping F12 to O+P with Karabiner elements, although maestro has been told to simulate the F12 keystroke, it does not activate O+P keystrokes.

When I press F12 keystroke with my hand, it does activate O+P.

Is there any solution for this problem? Thanks.

#2

Karabiner only captures keyboard presses from the specified device. You can see by going to Karabiner Elements => Devices to see which physical keyboard is being processed through karabiner.

If you run a keyboard maestro macro which simulates a f12 press, it sends... f12 key press to the OS. I can't think of a way that Karabiner can intercept a simulated key press. Maybe applescript key event can be your best bet to mimic a near simultaneous press.

#3

Hi, selina, thanks for the help.

I've been try applescript like this:

tell application "System Events" to keystroke "op"

But it is still not what I want, in my case, these two keystrokes have to be pressed at exactly the same time, or it won't work.

#4

Are you talking about true simultaneous press? or the keys o and p in rapid succession?

You can try fiddling with key down, key up with a delay of whatever ms you define in your applescript. I'm curious how you defined simultaneous key press in your karabiner. Can you show me your json snippet or edn?

#5

Sure, here is the json.

{
  "title": "Mode",
  "rules": [
    {
      "description": "F12",
      "manipulators": [
        {
          "type": "basic",
          "from": {
            "key_code": "f12"
          },
          "to": [
            {
              "repeat": true,
              "key_code": "o"
            },
            {
              "repeat": true,
              "key_code": "p"
            }
          ]
        }
      ]
    }
  ]
#6

It seems to me you need to abstract the UI (o/p “chord”) from the action. And then set up a Keyboard Maestro invocation direct to that action. Rather than ask KM to simulate chorded o/p.

#7

I've define that action in Karabiner elements, the problem is I cann't find a way to implement that action in maestro.