RotaryEncoder.ino

RotaryEncoder

This example demonstrates the use of relative MIDI CC rotary encoders that can be used for changing effect parameters, volumes, pan and balance controls, etc.

Boards:

AVR, AVR USB, Nano Every, Due, Nano 33, Teensy 3.x

Connections

• 2: pin A of the encoder
• 3: pin B of the encoder

Connect the common terminal of the encoder to ground. The built-in pullup resistors will be enabled.

Behavior

• When you turn the encoder, you should receive incremental MIDI Control Change messages.

Mapping

Select the Arduino as a custom MIDI controller in your DAW, and use the relative CC mode.
There are three main modes for sending relative messages, make sure you use the same one in this sketch as in your DAW.

See also

relativeCCmode

Written by PieterP, 2019-12-18
https://github.com/tttapa/Control-Surface

 
#include <Encoder.h> // Include the Encoder library.
// This must be done before the Control Surface library.
#include <Control_Surface.h> // Include the Control Surface library
 
// Instantiate a MIDI over USB interface.
USBMIDI_Interface midi;
 
// Instantiate a CCRotaryEncoder object
CCRotaryEncoder enc = {
  {2, 3},       // pins
  MCU::V_POT_1, // MIDI address (CC number + optional channel)
  1,            // optional multiplier if the control isn't fast enough
};
 
void setup() {
  // Select the correct relative MIDI CC mode.
  // Options:
  //   - TWOS_COMPLEMENT (default)
  //   - BINARY_OFFSET
  //   - SIGN_MAGNITUDE
  //   - NEXT_ADDRESS
  // Aliases:
  //   - REAPER_RELATIVE_1
  //   - REAPER_RELATIVE_2
  //   - REAPER_RELATIVE_3
  //   - TRACKTION_RELATIVE
  //   - MACKIE_CONTROL_RELATIVE
  //   - KORG_KONTROL_INC_DEC_1
  RelativeCCSender::setMode(relativeCCmode::MACKIE_CONTROL_RELATIVE);
  Control_Surface.begin(); // Initialize Control Surface
}
 
void loop() {
  Control_Surface.loop(); // Update the Control Surface
}