Hallo, I’m not sure if you take me seriously…
But anyway, I solved the problem for the moment. I “programmed” in Blockly this short code:
Forever … If keypressed “space” do play recording …
But instead of pressing the Space-button, a light barrier shall do this. So I took a makey-makey-board, connected it with my light barrier, and this board simulates the space-key-button-pressing.
It works! But I find that this solution is a bit to complicated. I need a computer to press a button… OK - but it works. So the uArm lifts balls in a ball path.