Nicola Landro
ITALY • + Follow
Tools, APP Software Used etc.
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arduino IDEArduino
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Description
Stylophone Midi Complete controller
This project have the aim to make a stylophone with a midi usb interface that can be easily connected to a computer or a phone and you can also play in your headphone in a train with a full featured midi controller that you can put in your pocket.
Code
Stylophone Midi
C/C++
USBMIDI_CREATE_DEFAULT_INSTANCE(); //#define DEBUG const int buttons[BUTTONS_LEN] = {9, 8, 7, 5, 3, 2, 6, 4, 15}; const String btns_actions[BUTTONS_LEN * BUTTONS_LEN] = { "FN", "", "", "OCT_PLUS", "", "", "OCT_LESS", "", "", "FN", "", "", "", "", "", "", "", "" }; bool btns[BUTTONS_LEN * BUTTONS_LEN] = {false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false}; bool btns_mid_state[BUTTONS_LEN * BUTTONS_LEN] = {false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false, false}; bool fn_enabled = false; const int KNOBS[KNOBS_LEN] = {0, 1, 2}; int knobvalold[KNOBS_LEN] = {0, 0, 0}; int controlknobs[KNOBS_LEN] = {14, 15, 16}; int octave = 0; const int KEYS[KEY_LEN] = {959,954,950,944,937,929,920,909,894,876,852,818,768,681,511 }; bool key1 = false; int keyvalold = KEYMAX; int note = -1; int noteold = -1; int velocity = 127; void setup() { Serial.begin(9600); MIDI.begin(1); pinMode(LED_PLUS, OUTPUT); // digitalWrite(LED_PLUS, HIGH); pinMode(LED_LESS, OUTPUT); // digitalWrite(LED_LESS, HIGH); pinMode(LED_FN, OUTPUT); // digitalWrite(LED_FN, HIGH); for (int i=0; i < BUTTONS_LEN; i++){ pinMode(buttons[i], INPUT); } } void loop() { // Octave LED if (octave > 0){ digitalWrite(LED_PLUS, HIGH); digitalWrite(LED_LESS, LOW); } else if (octave < 0){ digitalWrite(LED_PLUS, LOW); digitalWrite(LED_LESS, HIGH); } else { digitalWrite(LED_PLUS, LOW); digitalWrite(LED_LESS, LOW); } //Manage Generic Buttons for (int i_orig=0; i_orig < BUTTONS_LEN; i_orig++){ int btn_read = digitalRead(buttons[i_orig]); int i = i_orig; if (fn_enabled){ i = i + BUTTONS_LEN; } // Serial.println("Button " + String(btn_read)); if (btn_read == HIGH && !btns[i]) { btns[i] = true; Serial.println("Button " + String(i) + " Pressed"); if (btns_actions[i] == "OCT_LESS") { Serial.println("Octave less"); octave--; } else if (btns_actions[i] == "OCT_PLUS") { Serial.println("Octave plus"); octave++; } else if (btns_actions[i] == "FN") { Serial.println("FN"); btns_mid_state[i] = ! btns_mid_state[i]; if (btns_mid_state[i]){ digitalWrite(LED_FN, HIGH); } else{ digitalWrite(LED_FN, LOW); } fn_enabled = btns_mid_state[i]; } else { btns_mid_state[i] = ! btns_mid_state[i]; Serial.println("Midi " + String(i) + " send state " + String(btns_mid_state[i])); btns_mid_state[i] ? MIDI.sendControlChange(i, 127, 1) : MIDI.sendControlChange(i, 0, 1); } } else if (btn_read == LOW && btns[i]) { btns[i] = false; Serial.println("Button " + String(i) + " Released"); } } // Manage Knobs for (int i=0; i < KNOBS_LEN; i++){ int knobval = map(analogRead(KNOBS[i]), 0, 1023, 0, 127); if (knobval > (knobvalold[i] + KNOB_TOLERANCE) || knobval < (knobvalold[i] - KNOB_TOLERANCE)) { knobvalold[i] = knobval; Serial.println(String(i) + " Knob " + String(controlknobs[i]) + ": " + String(knobval)); if (i!= 0){ MIDI.sendControlChange(controlknobs[i], knobval, 1); } else { velocity = knobval; } } } // Manage Keyboard int keyval = analogRead(KEYBOARD); if (keyval < (KEYMAX - KEYBOARD_TOLERANCE)) { // key pressed // Serial.println(keyval); if (keyval < (keyvalold - KEYBOARD_TOLERANCE) || keyval > (keyvalold + KEYBOARD_TOLERANCE)) { // key changed // Serial.println(keyval); for (int i=0; i < KEY_LEN; i++){ if (keyval < (KEYS[i] + KEYBOARD_TOLERANCE) && keyval > (KEYS[i] - KEYBOARD_TOLERANCE)) { //the key i is pressed note = BASE_MIDI + (12 * octave) + i; Serial.println("Press Key: " + String(note) + " " + String(keyval)); if (key1){ MIDI.sendNoteOff(noteold, 0, 1); } key1 = true; MIDI.sendNoteOn(note, velocity, 1); noteold = note; } } } } else { // Key released if (key1) { Serial.println("Release Key: " + String(keyval)); MIDI.sendNoteOff(noteold, 0, 1); key1 = false; } } keyvalold = keyval; }
Nov 05,2023
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Stylophone Midi Complete controller
Complete midi controller like the small keyboard, but it is enought smaller to can put in your pocket and play in train with your smartphone
720
4
0
Published: Nov 05,2023
Download Gerber file 7
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