Pressure Pad Pitch Control

Force sensor you could build yourself. Plans are to scale it up and template the cutting of the layers for a commercially viable poly-touch interface of some kind.
But you can make this DIY version yourself, see how in our post. Code below.

View this post on Instagram

#diy #touch force #sensor #midi pitch and volume. pressure can be #expressive while not expensive #🎛 here’s how: 1. get a sheet of velostat. it’s cheap and any will do. 2. cut out some breadboard 3. tape one side of the perfboard/proto board, just so no solder drips through. 4. make every other row ground, the others go to one analog pin on a #promicro or #arduino leonardo 5. put a square of velostat under some foam tape, preferably some good car stuff, this white kind feels great but won’t last like some weather stripping would 6. code it so that pin is pulled high. 7. take the 1024 range of an analogRead and just use part of it where the good response is. 8. enjoy! example code at link in bio #makersgonnamake #musichack #custominstruments #midicontroller #diymidicontroller #onlineisthenewfm

A post shared by Joseph Wozniak📟 (@woz.lol) on Dec 16, 2019 at 12:41am PST

#include <Adafruit_NeoPixel.h>
#include <MIDIUSB.h>
#include <Keyboard.h>
#include <Mouse.h>
#define channel 12   // really that means it's ch 13
#define space 30

int br = 255;
#define MIDI_CC MIDI_CC_GENERAL1
#define distfilter 15
#define tfilter 3
int distchange;
int distchange2;
int distchange3;
int dist;
int dist2;
int dist3;
int ln1;    // previous note
int ln2;
int ln3;
int tcheck1;
int tcheck2;
int touch1;
int touch2;
int cc1;
int cc2 = 5;
int cc3 = 7;
int ct1 = 6;
int ct2 = 4;
bool sa;
bool sb;
bool b1;
bool b4 = true;
bool b5;
bool b6;
bool mmode;
bool smode;
bool tmode;
bool pup;  //full octave pitch up;
int mx;
int my;
bool off1;
bool off2;
bool off3;

#define NUM_AI 4
#define ANALOGUE_PIN_ORDER A0, A6, A7, A8
#define MIDI_CC MIDI_CC_GENERAL1

#define FILTER_AMOUNT 12   // for sliders n knobs

#define ANALOGUE_INPUT_CHANGE_TIMEOUT 200000
byte analogueInputMapping[4] = {ANALOGUE_PIN_ORDER};
byte analogueInputs[4];
byte tempAnalogueInput;
byte digitalOffset = 0;
byte analogueDiff = 0;
boolean analogueInputChanging[4];
unsigned long analogueInputTimer[4];

Adafruit_NeoPixel strip = Adafruit_NeoPixel(29, 5, NEO_GRB + NEO_KHZ800);

void setup() {

  Keyboard.begin();
  Mouse.begin();

  strip.begin();
  strip.setBrightness(br);
  strip.show();

  pinMode(A1, INPUT);  // sensor
  pinMode(A2, INPUT);  // sensor
  pinMode(A3, INPUT);  // sensor
  pinMode(A0, INPUT);  // slider
  pinMode(A6, INPUT);  // slider
  pinMode(A7, INPUT);  // slider
  pinMode(A8, INPUT);  // slider
  pinMode(A9, INPUT_PULLUP);  // knob
  pinMode(A10, INPUT_PULLUP);  // knob
  pinMode(14, INPUT);  // switch
  pinMode(15, INPUT);  // switch
  pinMode(5, OUTPUT);  // LEDs
  pinMode(2, INPUT_PULLUP);  // button
  pinMode(3, INPUT_PULLUP);  // button
  pinMode(7, INPUT_PULLUP);  // button
  pinMode(16, INPUT_PULLUP);  // button
  pinMode(0, INPUT_PULLUP);  // button
  pinMode(1, INPUT_PULLUP);  // button

  Mouse.release();
  Keyboard.releaseAll();

}

void controlChange(byte thechannel, byte control, byte value) {
  midiEventPacket_t event = {0x0B, 0xB0 | thechannel, control, value};
  MidiUSB.sendMIDI(event);
  MidiUSB.flush();
}

void pitchBendChange(byte thechannel, int value) {
  byte lowValue = value & 0x7F;
  byte highValue = value >> 7;
  midiEventPacket_t event = {0x0E, 0xE0 | thechannel, lowValue, highValue};
  MidiUSB.sendMIDI(event);
  MidiUSB.flush();
}

void noteOn(byte thechannel, byte pitch, byte velocity) {
  midiEventPacket_t noteOn = {0x09, 0x90 | thechannel, pitch, velocity};
  MidiUSB.sendMIDI(noteOn);
}

void noteOff(byte thechannel, byte pitch, byte velocity) {
  midiEventPacket_t noteOff = {0x08, 0x80 | thechannel, pitch, velocity};
  MidiUSB.sendMIDI(noteOff);
}

void loop() {
  sensor();
  touch();
  sliders();
  swcheck();
}

void swcheck() {
  if (digitalRead(14) != sa || digitalRead(15) != sb) {
    sa = digitalRead(14);
    sb = digitalRead(15);
    stripn();
    if (mmode) {
      if (sa) {
        Mouse.press();
      } else {
        Mouse.release();
      }
    } else {
      controlChange(channel, space + cc1, 0);
      delay(50);
      controlChange(channel, space + cc2, 0);
      delay(50);
      controlChange(channel, space + cc3, 0);
      delay(50);
      if (!sa && !sb) {
        cc3 = 7;  // fuzz drum
        cc2 = 5;  // fuzz bass
        cc1 = 0;  // filter wah
        ct2 = 4;
        ct1 = 6;
      }
      if (sa && !sb) {
        cc3 = 14; // crumble
        cc2 = 4;  // glitch bass
        cc1 = 6;  // glitch drum
        ct2 = 5;
        ct1 = 0;
      }
      if (!sa && sb) {
        cc3 = 13; // radiate
        cc2 = 11; // flange
        cc1 = 12; // chorus
        ct2 = 62;
        ct1 = 61;
      }
      if (sa && sb) {
        cc3 = 29;  // new
        cc2 = 28;  // new
        cc1 = 27;  // new
        ct2 = 64;
        ct1 = 63;
      }
    }
  }

  if (!digitalRead(0)) {       //back button L
    if (mmode) {
      Mouse.click(MOUSE_RIGHT);
    } else if (tmode) {
      if (b1) {
        b1 = false;
        strip.setPixelColor(1, strip.Color(0, 3, 0));
        strip.setPixelColor(27, strip.Color(0, 3, 0));
        strip.show();
              controlChange(channel, space + 81, 0);
      } else {
        b1 = true;
        strip.setPixelColor(1, strip.Color(0, 0, 3));
        strip.setPixelColor(27, strip.Color(0, 0, 3));
        strip.show();
              controlChange(channel, space + 81, 127);
      }
    } else {
      Keyboard.press(0x87);
      Keyboard.press(0x86);
      Keyboard.press(0x70);
      Keyboard.release(0x70);
      Keyboard.release(0x86);
      Keyboard.release(0x87);
    }
    delay(300);
    while (!digitalRead(0)) {}
  }
  if (!digitalRead(1)) {        //back button R
    if (tmode) {
      tmode = false;
      for (int panic = 0; panic < 24; panic++) {
        for (int pchan = 0; pchan < 2; pchan++) {
          noteOff(pchan, panic + 68, 64);
        }
      }
      MidiUSB.flush();
    }
    if (mmode) {
      if (smode) {
        smode = false;
      } else {
        smode = true;
      }
      stripn();
      delay(300);
    } else {
      b4 = false;
      mmode = true;
      strip.setPixelColor(0, strip.Color(0, 0, 0));
      strip.setPixelColor(28, strip.Color(0, 0, 0));
      strip.setPixelColor(1, strip.Color(0, 0, 0));
      strip.setPixelColor(27, strip.Color(0, 0, 0));
      stripn();
      controlChange(channel, space + cc1, 0);
      delay(50);
      controlChange(channel, space + cc2, 0);
      delay(50);
      controlChange(channel, space + cc3, 0);
      delay(200);
    }
    while  (!digitalRead(1)) {}
  }
  if (!digitalRead(7)) {                     //next
    if (!tmode) {
      b5 = false;
      b6 = false;
      controlChange(channel, space + 74, 0);
      controlChange(channel, space + 34, 0);
      controlChange(channel, space + 75, 0);
      controlChange(channel, space + 35, 0);
    }
    if (tmode && !pup) {
      pup = true;
      stripn();
      delay(300);
    } else {
      tmode = true;
      mmode = false;
      b4 = false;
      pup = false;
      strip.setPixelColor(9, strip.Color(0, 0, 0));
      strip.setPixelColor(19, strip.Color(0, 0, 0));
      stripn();
      controlChange(channel, space + cc1, 0);
      delay(50);
      controlChange(channel, space + cc2, 0);
      delay(50);
      controlChange(channel, space + cc3, 0);
      delay(200);
    }
    while  (!digitalRead(7)) {}
  }
  if (!digitalRead(3)) {                      // set
    if (tmode) {
      tmode = false;
      b4 = true;
      b5 = false;
      b6 = false;
      for (int panic = 0; panic < 24; panic++) {
        for (int pchan = 0; pchan < 2; pchan++) {
          noteOff(pchan, panic + 68, 64);
        }
      }
      controlChange(channel, space + 74, 0);
      controlChange(channel, space + 34, 0);
      controlChange(channel, space + 75, 0);
      controlChange(channel, space + 35, 0);
      MidiUSB.flush();
    }
    if (!b4 && !mmode) {
      b4 = true;
      stripn();
      controlChange(channel, space + cc1, 0);
      delay(50);
      controlChange(channel, space + cc2, 0);
      delay(50);
      controlChange(channel, space + cc3, 0);
      delay(200);
      distchange = 0;
      distchange2 = 0;
      distchange3 = 0;
    } else {
      b4 = false;
      if (mmode) {
        mmode = false;
        Mouse.release();
        Keyboard.releaseAll();
      }
      strip.setPixelColor(0, strip.Color(0, 0, 0));
      strip.setPixelColor(28, strip.Color(0, 0, 0));
      strip.setPixelColor(1, strip.Color(0, 0, 0));
      strip.setPixelColor(27, strip.Color(0, 0, 0));
      stripn();
      delay(300);
    }
    while (!digitalRead(3)) {}
  }
  if (!digitalRead(16)) {                     //plus
    if (mmode) {
      Keyboard.press(0x87);
      Keyboard.press(0x86);
      Keyboard.press(0x3D);
      Keyboard.release(0x3D);
      delay(10);
      Keyboard.press(0x3D);
      Keyboard.release(0x3D);
      Keyboard.release(0x86);
      Keyboard.release(0x87);
      delay(100);
    } else {
      if (!b5) {
        if (b6) {
          b6 = false;
          if (tmode) {
            controlChange(channel, space + 75, 0);
          } else {
            controlChange(channel, space + 35, 0);
          }
          for (int bw6 = 1; bw6 < 9; bw6++) {
            strip.setPixelColor(bw6 + 19, strip.Color(0, 3, 0));
            strip.setPixelColor(bw6, strip.Color(0, 3, 0));
          }
        } else {
          b5 = true;
          if (tmode) {
            controlChange(channel, space + 74, 127);
          } else {
            controlChange(channel, space + 34, 127);
          }
          for (int bw5 = 1; bw5 < 9; bw5++) {
            strip.setPixelColor(bw5 + 19, strip.Color(3, 3, 3));
            strip.setPixelColor(bw5, strip.Color(0, 3, 0));
          }
        }
        strip.show();
        delay(400);
      } else {
        b5 = false;
        if (tmode) {
          controlChange(channel, space + 74, 0);
        } else {
          controlChange(channel, space + 34, 0);
        }
        for (int bv5 = 1; bv5 < 9; bv5++) {
          strip.setPixelColor(bv5 + 19, strip.Color(0, 3, 0));
          strip.setPixelColor(bv5, strip.Color(0, 3, 0));
        }
        strip.show();
        delay(400);
      }
    }
    while (!digitalRead(16)) {}
  }
  if (!digitalRead(2)) {                         //minus
    if (mmode) {
      Keyboard.press(0x87);
      Keyboard.press(0x86);
      Keyboard.press(0x38);
      Keyboard.release(0x38);
      Keyboard.release(0x86);
      Keyboard.release(0x87);
    } else {
      if (!b6) {
        if (b5) {
          b5 = false;
          if (tmode) {
            controlChange(channel, space + 74, 0);
          } else {
            controlChange(channel, space + 34, 0);
          }
          for (int bw6 = 1; bw6 < 9; bw6++) {
            strip.setPixelColor(bw6 + 19, strip.Color(0, 3, 0));
            strip.setPixelColor(bw6, strip.Color(0, 3, 0));
          }
        } else {
          b6 = true;
          if (tmode) {
            controlChange(channel, space + 75, 127);
          } else {
            controlChange(channel, space + 35, 127);
          }
          for (int bw6 = 1; bw6 < 9; bw6++) {
            strip.setPixelColor(bw6 + 19, strip.Color(0, 3, 0));
            strip.setPixelColor(bw6, strip.Color(3, 3, 3));
          }
        }
        strip.show();
      } else {
        b6 = false;
        if (tmode) {
          controlChange(channel, space + 75, 0);
        } else {
          controlChange(channel, space + 35, 0);
        }
        for (int bv6 = 1; bv6 < 9; bv6++) {
          strip.setPixelColor(bv6 + 19, strip.Color(0, 3, 0));
          strip.setPixelColor(bv6, strip.Color(0, 3, 0));
        }
        strip.show();
      }
    }
    delay(400);
    while (!digitalRead(16)) {}
  }
}  // end switch check

void sensor() {
  if (!b4) {
    mx = 0;
    my = 0;
    int d1a = analogRead(A1);
    int d2a = analogRead(A1);
    int d3a = analogRead(A1);
    int distcheck = (d1a + d2a + d3a) / 3;
    if (distcheck < 150) {
      distcheck = 0;
      if (!off1) {
        off1 = true;
        noteOff(0, 70, 64);
        MidiUSB.flush();
      }
    }
    if ((distcheck < distchange - distfilter) || (distcheck > distchange + distfilter)) {
      off1 = false;
      if (distcheck > 1000) {
        distcheck = 0;
      }
      dist = ((distcheck - 135) / 4.5);
      if (dist > 127) {
        dist = 127;
      }
      if (dist < 0) {
        dist = 0;
      }

      if (mmode) {
        if ((dist > 20) && (dist < 64)) {
          mx = -((dist - 20) / 4);
        }
        if (dist > 63) {
          mx = -((127 - dist) / 4);
        }
        if (smode) {
          if ((dist > 20) && (dist < 108)) {
            Keyboard.press(0x81);
            Mouse.move(0, 0, -1 - sb);
            Keyboard.release(0x81);
            delay(100);
          }
        } else {
          Mouse.move(mx * (sb + 1), 0, 0);
        }
      } else if (tmode) {
        delay(48);
        noteOff(0, ln1, 64);
        MidiUSB.flush();
        ln1=dist / 8 + 70;
        noteOn(0, ln1, 64);
        MidiUSB.flush();
      } else {
        controlChange(channel, space + cc1, dist);
      }
      distchange = distcheck;
      stripn();
    }

    int d1b = analogRead(A2);
    int d2b = analogRead(A2);
    int d3b = analogRead(A2);
    int distcheck2 = (d1b + d2b + d3b) / 3;
    if (distcheck2 < 150) {
      distcheck2 = 0;
      if (!off2) {
        off2 = true;
        noteOff(1, 70, 64);
        MidiUSB.flush();
      }
    }
    if ((distcheck2 < distchange2 - distfilter) || (distcheck2 > distchange2 + distfilter)) {
      off2 = false;
      if (distcheck2 > 1000) {
        distcheck2 = 0;
      }
      dist2 = ((distcheck2 - 135) / 4.5);
      if (dist2 > 127) {
        dist2 = 127;
      }
      if (dist2 < 0) {
        dist2 = 0;
      }

      if (mmode) {
        if ((dist2 > 20) && (dist2 < 53)) {
          my = -((53 - dist2) / 4);
        }
        if ((dist2 > 73) && (dist2 < 108)) {
          my = ((dist2 - 72) / 4);
        }
        if (smode) {
          if ((dist2 > 20) && (dist2 < 53)) {
            Mouse.move(0, 0, -1 - sb);
            delay(100);
          }
          if ((dist2 > 73) && (dist2 < 108)) {
            Mouse.move(0, 0, 1 + sb);
            delay(100);
          }
        } else {
          Mouse.move(0, my * ((sb * 2) + 1), 0);
        }
      } else if (tmode) {
        if (sa) {
          controlChange(channel, space + 76, dist2);
        } else {
        delay(48);
        noteOff(1, ln2, 64);
        MidiUSB.flush();
        ln2=dist2 / 8 + 70;
        noteOn(1, ln2, 64);
        MidiUSB.flush();
        }
      } else {
        controlChange(channel, space + cc2, dist2);
      }
      distchange2 = distcheck2;
      stripn();
    }

    int d1c = analogRead(A3);
    int d2c = analogRead(A3);
    int d3c = analogRead(A3);
    int distcheck3 = (d1c + d2c + d3c) / 3;
    if (distcheck3 < 150) {
      distcheck3 = 0;
      if (!off3) {
        off3 = true;
        noteOff(2, 70, 64);
        MidiUSB.flush();
      }
    }
    if ((distcheck3 < distchange3 - distfilter) || (distcheck3 > distchange3 + distfilter)) {
      off3 = false;
      if (distcheck3 > 1000) {
        distcheck3 = 0;
      }
      dist3 = ((distcheck3 - 135) / 4.5);
      if (dist3 > 127) {
        dist3 = 127;
      }
      if (dist3 < 0) {
        dist3 = 0;
      }

      if (mmode) {
        if ((dist3 > 20) && (dist3 < 64)) {
          mx = ((dist3 - 20) / 4);
        }
        if (dist3 > 63) {
          mx = ((127 - dist3) / 4);
        }
        if (smode) {
          if ((dist3 > 20) && (dist3 < 108)) {
            Keyboard.press(0x81);
            Mouse.move(0, 0, 1 + sb);
            Keyboard.release(0x81);
            delay(100);
          }
        } else {
          Mouse.move(mx * (sb + 1), 0, 0);
        }
      } else  if (tmode) {
        if (sb) {
          controlChange(channel, space + 70, dist3);
        } else {
        delay(48);
        noteOff(2, ln3, 64);
        MidiUSB.flush();
        ln3=dist3 / 8 + 70;
        noteOn(2, ln3, 64);
        MidiUSB.flush();
        }
      } else {
        controlChange(channel, space + cc3, dist3);
      }
      distchange3 = distcheck3;
      stripn();
    }
  }
}

void sliders() {                // now the sliders
  byte i = 0;
  for (i = 0; i < 4; i++)
  {
    tempAnalogueInput = analogRead(analogueInputMapping[i]) / 4;
    analogueDiff = abs(tempAnalogueInput - analogueInputs[i]);
    if ((analogueDiff > 0 && analogueInputChanging[i] == true) || analogueDiff >= FILTER_AMOUNT)
    {
      if (analogueInputChanging[i] == false || analogueDiff >= FILTER_AMOUNT)
      {
        analogueInputTimer[i] = micros();
        analogueInputChanging[i] = true;
      }
      else if (micros() - analogueInputTimer[i] > ANALOGUE_INPUT_CHANGE_TIMEOUT)
      {
        analogueInputChanging[i] = false;
      }
      if (analogueInputChanging[i] == true)
      {
        analogueInputs[i] = tempAnalogueInput;

        if (i == 0) {
          controlChange(channel, space + 23, tempAnalogueInput / 2); // C vol
        }
        if (i == 1) {
          if (tmode) {
            controlChange(channel, space + 70, tempAnalogueInput / 2); // theremin vol cc
          } else {
            controlChange(channel, space + 20, tempAnalogueInput / 2); // noise select
          }
        }
        if (i == 2) {
          if (tmode) {
            controlChange(channel, space + 71, tempAnalogueInput / 2); // theremin select
          } else {
            controlChange(channel, space + 22, tempAnalogueInput / 2); // drums select
          }
        }
        if (i == 3) {
          if (tmode) {
            controlChange(channel, space + 72, tempAnalogueInput / 2); // theremin verb
          } else {
            controlChange(channel, space + 24, tempAnalogueInput / 2); // bass select
          }
        }
        for (int p = 0; p < 29; p++) {
          if ((p > round(tempAnalogueInput / 9 - 1)) && (p < round(tempAnalogueInput / 9 + 1))) {
            if (b4) {
              strip.setPixelColor(p, strip.Color(6, 3, 0));
            } else {
              strip.setPixelColor(p, strip.Color(64, 0, 0));
            }
          } else if (p == 9 - (tmode * 9) || p == 19 + (tmode * 9)) {
            if (!mmode) {
              strip.setPixelColor(p, strip.Color(3, 2 * digitalRead(14), 2 * digitalRead(15)));
            }
          } else if ((b4) && (p == 4 || p == 14 || p == 24)) {
            strip.setPixelColor(p, strip.Color(0, 3, 3));
          } else {
            strip.setPixelColor(p, strip.Color(0, 0, 0));
          }
        }
        if (tmode && pup) {
          strip.setPixelColor(1, strip.Color(3, 0, 0));
          strip.setPixelColor(27, strip.Color(3, 0, 0));
        }
        if (mmode) {
          if (smode) {
            strip.setPixelColor(9 + (mx / 2) + (my / 2), strip.Color(0, 0, 3));
            strip.setPixelColor(19 + (mx / 2) - (my / 2), strip.Color(0, 0, 3));
          } else {
            strip.setPixelColor(9 + (mx / 2) + (my / 2), strip.Color(0, 3, 0));
            strip.setPixelColor(19 + (mx / 2) - (my / 2), strip.Color(0, 3, 0));
          }
        }
        strip.show();

      }
    }
  }
}
void touch() {

  int tt1 = analogRead(A9);
  int tt2 = analogRead(A9);
  int tt3 = analogRead(A9);
  int t1 = (1023 - ((tt1 + tt2 + tt3) / 3)) - 566;
  if (t1 < 0) {
    t1 = 0;
  }
  touch1 = (t1 / 2);
  if ((touch1 < tcheck1 - tfilter) || (touch1 > tcheck1 + tfilter)) {
    if (touch1 > 127) {
      touch1 = 127;
    }
    if (mmode) {
      my = 0;
      if ((touch1 < 53) && (touch1 > 20)) {
        my = -((53 - touch1) / 4);
      }
      if (touch1 > 73) {
        my = ((touch1 - 72) / 4);
      }
      if (smode) {
        if ((touch1 < 53) && (touch1 > 20)) {
          Mouse.move(0, 0, -1 - (sb * 4));
          delay(100);
        }
        if (touch1 > 73) {
          Mouse.move(0, 0, 1 + (sb * 2));
          delay(100);
        }
      } else {
        Mouse.move(0, my * ((sb * 2) + 1), 0);
      }
    } else if (tmode) {
      controlChange(channel, space + 70, touch1);
    } else {
      controlChange(channel, space + ct1, touch1);
    }
    tcheck1 = touch1;
    stripn();
  }

  int tu1 = analogRead(A10);
  int tu2 = analogRead(A10);
  int tu3 = analogRead(A10);
  int t2 = (1023 - ((tu1 + tu2 + tu3) / 3)) - 566;
  if (t2 < 0) {
    t2 = 0;
  }
  touch2 = (t2 / 2);
  if ((touch2 < tcheck2 - tfilter) || (touch2 > tcheck2 + tfilter)) {
    if (touch2 > 127) {
      touch2 = 127;
    }
    if (mmode) {
      mx = 0;
      if ((touch2 < 53) && (touch2 > 20)) {
        mx = -((53 - touch2) / 5);
      }
      if (touch2 > 73) {
        mx = ((touch2 - 72) / 5);
      }
      if (smode) {
        if ((touch2 < 53) && (touch2 > 20)) {
          Keyboard.press(0x81);
          Mouse.move(0, 0, -1 - (sb * 4));
          Keyboard.release(0x81);
          delay(100);
        }
        if (touch2 > 73) {
          Keyboard.press(0x81);
          Mouse.move(0, 0, 1 + (sb * 2));
          Keyboard.release(0x81);
          delay(100);
        }
      } else {
        Mouse.move(mx * ((sb * 3) + 1), 0, 0);
      }
    } else if (tmode) {
      if (pup) {
        pitchBendChange(channel, map(touch2, 0, 127, 8192, 16383));
      } else {
        pitchBendChange(channel, map(touch2, 0, 127, 8192, 9524));
      }
    } else {
      controlChange(channel, space + ct2, touch2);
    }
    tcheck2 = touch2;
    stripn();
  }

}
void stripn() {
  strip.clear();
  if (mmode) {
    if (smode) {
      strip.setPixelColor(9 + (mx / 2) + (my / 2), strip.Color(0, 0, 3));
      strip.setPixelColor(19 + (mx / 2) - (my / 2), strip.Color(0, 0, 3));
    } else {
      strip.setPixelColor(9 + (mx / 2) + (my / 2), strip.Color(0, 3, 0));
      strip.setPixelColor(19 + (mx / 2) - (my / 2), strip.Color(0, 3, 0));
    }
  } else {
    int d1;
    int d2;
    int d3;
    for (int p = 0; p < 9; p++) {
      if (p < 5) {
        d1 = (distchange / 3) - (200 - 50 * p);
        d2 = (distchange2 / 3) - (200 - 50 * p);
        d3 = (distchange3 / 3) - (200 - 50 * p);
      } else {
        d1 = (distchange / 3) - (50 * (p - 4));
        d2 = (distchange2 / 3) - (50 * (p - 4));
        d3 = (distchange3 / 3) - (50 * (p - 4));
      }
      if (d1 > 255) d1 = 255;
      if (d2 > 255) d2 = 255;
      if (d3 > 255) d3 = 255;
      if (d1 < 0) d1 = 0;
      if (d2 < 0) d2 = 0;
      if (d3 < 0) d3 = 0;
      strip.setPixelColor(p, strip.Color(random(d1), random(d1), random(d1)));
      strip.setPixelColor(p + 10, strip.Color(random(d2), random(d2), random(d2)));
      strip.setPixelColor(p + 20, strip.Color(random(d3), random(d3), random(d3)));
    }

    strip.setPixelColor(9 - (tmode * 9), strip.Color(3, 2 * digitalRead(14), 2 * digitalRead(15)));
    strip.setPixelColor(19 + (tmode * 9), strip.Color(3, 2 * digitalRead(14), 2 * digitalRead(15)));

    if (tcheck1 != 0) {
      strip.setPixelColor(29 - tcheck1 / 4, strip.Color(0, 64, 0));
    }
    if (tcheck2 != 0) {
      strip.setPixelColor(29 - tcheck2 / 4, strip.Color(0, 64, 0));
    }

  }
  if (b4) {
    strip.setPixelColor(4, strip.Color(0, 3, 3));
    strip.setPixelColor(14, strip.Color(0, 3, 3));
    strip.setPixelColor(24, strip.Color(0, 3, 3));
  }
  if (tmode && pup) {
    strip.setPixelColor(1, strip.Color(3, 0, 0));
    strip.setPixelColor(27, strip.Color(3, 0, 0));
  }

  strip.show();
}

Code for Pro Micro or Arduino Leonardo. This device also has the sharp distance sensors and several other pots and buttons.

more like this at woz.lol