MIDI Control Surface with Nano ESP32 S3

Using Arduino Programming Questions
1

Hello everyone,

I'm trying to get familiar with the Nano ESP32 S3 which, according to the compatibility chart, seems fully compatible with the control surface library and supports MIDI-over-USB. See the link: MIDI over USB

Now, I'm starting from basic functions to see how it feels: 1 PBPotentiometer, 1 Note button, 1 encoder.

It wasn't as easy as the Pro Micro, but I managed to upload my sketch:


#include <Control_Surface.h>
#include <Encoder.h>

USBMIDI_Interface midi;

using namespace MIDI_Notes;

//FADERS
PBPotentiometer vol1 {
  2,        // Analog pin connected to potentiometer
  CHANNEL_1, // MIDI Channel 
  };

//BUTTONS
NoteButton button1 = {
   5,
  {note(Ab, -1), CHANNEL_1}, 
};

// ENCODERS
CCRotaryEncoder enc1 = {
  {6, 7},       
  MCU::V_POT_1, 
  1,            // optional multiplier if the control isn't fast enough
};

void setup() {
RelativeCCSender::setMode(relativeCCmode::MACKIE_CONTROL_RELATIVE);
Control_Surface.begin(); 
}

void loop() {
Control_Surface.loop();
}

The note button and encoder seem fine now; the PBPotentiometer works but it is a bit noisy; the library analog filter doesn't seem to improve much.

Do you guys have an idea of what can I do to make it work properly?
Thank you!

2

Let's ask the author @PieterP

3

It's best to check the hardware first. Make sure you're using potentiometers with a low enough resistance, short wires, stable supply voltages, etc.

Then try increasing the ANALOG_FILTER_SHIFT_FACTOR and ANALOG_FILTER_TYPE options in ~/Arduino/libraries/Control-Surface/src/AH/Settings/Settings.hpp (e.g. ANALOG_FILTER_SHIFT_FACTOR=4 and ANALOG_FILTER_TYPE=uint32_t).

1 Like
4

Thanks a lot PieterP!
It worked!