I.4. Foot Switches and Buttons

Figure 2. Button Connection Option

Main foot switch (or main user button in non-pedal context) should be connected off-board through H13. The on-board button main user button KEY2 is provided for testing or maintenance. For additional buttons or foot switches, we can use any of control ports (H1,H2,..,H6) when available (not used for potentiometer or selector switch). We can also use encoder port (X2) to add more (up to 3) buttons when we don’t use it for rotary encoder. See Figure 2 for the illustration. When all alternative ports are unavailable, we can still add almost unlimited number of buttons through I2C port using I2C button controller.

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