Note that when I use this version with an Arduino UNO, the whole thing works. I've tried discussing this with a few who are far more experienced than I, but surprisingly they were unable to provide insight as to why.
#include <SoftwareSerial.h> // MIDI Input
#include <MIDI.h> // MIDI Output
#include <CapacitiveSensor.h>
#define rxPin 0 // Input (Grey)
#define txPin 1 // Output (Yellow)
SoftwareSerial midiSerial (rxPin, txPin);
const byte wiper = 0; //Position of fader relative to GND (Analog 0)
const byte motorUp = 4;
const byte motorDown = 5;
const byte motorPWM = 6;
const byte touchSend = 7;//Send pin for Capacitance Sensing Circuit (Digital 7)
const byte touchReceive = 8; //Receive pin for Capacitance Sensing Circuit (Digital 8)
unsigned int incomingCommand;
unsigned int incomingNote;
unsigned int incomingVelocity;
byte motorSpeed = 150; // Raise if the fader is too slow (0-255)
byte minimumCp = 200; // Raise if the fader is too sensitive (0-16383)
byte tolerance = 10; // Raise if the fader is too shaky (0-1023)
double faderMax = 1023; //Value read by fader's maximum position (0-1023)
double faderMin = 0; //Value read by fader's minimum position (0-1023)
long lastDebounceTime = 0; // the last time the output pin was toggled
long debounceDelay = 15; // the debounce time; increase if the output flickers
int lastfaderValue = 0;
int targetPosition;
byte ch1Vol = 176;
byte fullVel = 127;
byte ch_1 = 1;
byte Db_1 = 1;
CapacitiveSensor touch = CapacitiveSensor(touchReceive, touchSend);
MIDI_CREATE_DEFAULT_INSTANCE();
void setup() {
touch.set_CS_AutocaL_Millis(0xFFFFFFFF);
midiSerial.begin(31250);
MIDI.begin();
pinMode(motorDown, OUTPUT);
pinMode(motorUp, OUTPUT);
pinMode(motorPWM, OUTPUT);
calibrateFader(); }
void calibrateFader() {
digitalWrite(motorUp, HIGH);
analogWrite(motorPWM, motorSpeed);
delay(300);
digitalWrite(motorUp, LOW);
faderMax = analogRead(wiper) - tolerance;
digitalWrite(motorDown, HIGH);
analogWrite(motorPWM, motorSpeed);
delay(300);
digitalWrite(motorDown, LOW);
faderMin = analogRead(wiper) + tolerance; }
void loop() {
int faderPos = analogRead(wiper);
int faderHiResMIDI = ((faderPos *16.0146627566) - 8191.5);
while ( midiSerial.available()) {
incomingCommand = midiSerial.read();
incomingNote = midiSerial.read();
incomingVelocity = midiSerial.read()*8.05511811024;
if ((incomingVelocity <=1023) && (incomingCommand >127) && (incomingNote <128)) {
midiSerial.write(incomingCommand);
midiSerial.write(incomingNote);
midiSerial.write(incomingVelocity); } }
{ int totalCp = touch.capacitiveSensor(30);
if ( (millis() - lastDebounceTime) > debounceDelay) {
if (totalCp <= minimumCp) {
//if (incomingCommand == ch1Vol) {
updateFader(incomingVelocity); }// } // Not Touching fader
if ((faderPos == lastfaderValue) && (totalCp > minimumCp)) {
MIDI.sendNoteOn(Db_1, fullVel, ch_1); // Touching Fader
digitalWrite(motorDown, LOW);
digitalWrite(motorUp, LOW); }
if (((faderPos > lastfaderValue+1) or (faderPos < lastfaderValue-1)) && (totalCp > minimumCp)) { // Moving Fader
MIDI.sendPitchBend(faderHiResMIDI, ch_1);
digitalWrite(motorDown, LOW);
digitalWrite(motorUp, LOW); }
lastfaderValue = faderPos;
lastDebounceTime = millis(); } } }
void updateFader(int position) { //Function to move fader to a specific position between 0-1023 if it's not already there
if (position < analogRead(wiper) - tolerance && position > faderMin) {
digitalWrite(motorDown, HIGH);
while (position < analogRead(wiper) - tolerance) {}; //Loops until motor is done moving
digitalWrite(motorDown, LOW); }
else if (position > analogRead(wiper) + tolerance && position < faderMax) {
digitalWrite(motorUp, HIGH);
while (position > analogRead(wiper) + tolerance) {}; //Loops until motor is done moving
digitalWrite(motorUp, LOW); } }