@Drumer
These are the basic controls, as you see, I fly with the movement arrows and it flies very well, I even do AAR. With the X and Z you gradually give and take off power. This configuration is intended to use both hands on the entire keyboard area to be ready for another command.
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With this I use the CTRL as a modifier to move the DCS (not that one, the ICP), very necessary to work with the DED
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with this I use ALT modifier to control the TRIM
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Now to use the mouse as HOTAS, you must install a JOYSTICK emulator and a program that simulates its use as UCR.
Here I leave you the link,
https://www.mediafire.com/folder/0bj9w67j0lg72/Mouse_as_Joystick
first install VJOY, download the UCR.INI file, copy it into the UCR folder that you are going to download and execute as well, then you have to go to the Falcon launcher and configure the radar cursor axis and the virtual joystick buttons.
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and there you would be ready to use the mouse as HOTAS.