Pitch-Bend-Potentiometer.ino

Pitch-Bend-Potentiometer

This example demonstrates the use of MIDI Pitch Bend potentiometers that can be used for changing effect parameters, volumes, pan and balance controls, etc. It can control almost any knob in your DAW software.

Boards: 🛈

AVR, AVR USB, Nano Every, Due, Nano 33 IoT, Nano 33 BLE, UNO R4, Pi Pico, Teensy 3.x, ESP32, ESP8266

Connections

• A0: wiper of a potentiometer

Connect the left terminal of the potentiometer to ground, and the right one to V_CC.

Behavior

• When you turn the potentiometer, you should receive MIDI Pitch Bend events on channel 1, with a value between -8192 and +8191.
• The analog input is filtered, so there shouldn't be any noise on the position. If there is, check your wiring, and make sure that the resistance of the potentiometer isn't too high (10 kΩ is ideal).

Mapping

Select the Arduino as a custom MIDI controller in your DAW, and use the MIDI learn option to assign the potentiometer to a function.

Written by PieterP, 2019-08-23
https://github.com/tttapa/Control-Surface

 
#include <Control_Surface.h> // Include the Control Surface library
 
// Instantiate a MIDI over USB interface.
USBMIDI_Interface midi;
 
// Instantiate a PBPotentiometer object
PBPotentiometer potentiometer {
  A0,        // Analog pin connected to potentiometer
  Channel_1, // MIDI Channel 1
};
 
void setup() {
  Control_Surface.begin(); // Initialize Control Surface
}
 
void loop() {
  Control_Surface.loop(); // Update the Control Surface
}