I use an iPac 4 in my system that is full. Does anyone know if there is a way to add more controls by adding an iPac 2.Depends on which mode you're using it in and what controls you want to add.
If you're using your IPac4 in keyboard mode, then yes, you can add more controls with either another IPac or some other encoder like an Arduino with a keyboard firmware.
- There are a number of keystrokes that are still available.
If you're using your IPac4 in dinput or xinput mode, you won't be able to add buttons to the four existing gamepad devices created by your IPac firmware, but you should be able to add more gamepad devices/buttons with another IPac.
Everything up to this point assumes that you want to add more microswitch-style joysticks/buttons to your current setup.
If you want to add optical controls (trackball, spinner, etc.), analog controls (potentiometers), a mechanical rotary joystick (Ikari Warriors), or some other type of specialized control, you'll need an encoder that works with the type(s) of control you're trying to add.
Scott