commit 5fbf5ea2e0c7b41f3d1f3d129d8f3ed3c8091046
Author: Stefan Ritter <mail@stefanritter.net>
Date:   Wed Mar 15 17:02:07 2023 +0100

    Init

diff --git a/Code/Code.ino b/Code/Code.ino
new file mode 100644
index 0000000..a6e85f5
--- /dev/null
+++ b/Code/Code.ino
@@ -0,0 +1,212 @@
+//
+// Cavaliere Heartbeat
+//
+
+#include <EEPROM.h>
+#include <Encoder.h> // Encoder by Paul Stoffregen
+
+#include <Adafruit_SSD1306.h>
+Adafruit_SSD1306 display(128, 64, &Wire, 4);
+
+#define audio 12                // Pin for 3,5 Jack
+#define led 13                  // Pin for LED
+#define rot_clk 4               // Rotary encoder CLK pin
+#define rot_dt 3                // Rotary encoder DT pin
+#define rot_sw 2                // Rotary encoder SW pin, 1 = not pushed, 0 = pushed
+#define triggerLengthMS 50      // How long the trigger should stay on in milliseconds when triggerLength = 1
+#define bpm_value_min 80        // 20 bpm is minimum (80 / 4)
+#define bpm_value_max 1200      // 300 bpm is maximum (300 * 4)
+#define offset_x 5              // Display offset
+#define offset_y 5              // Display offset
+
+int bpm;                        // BPM, who'd have thought
+int bpms;                       // BPM to milliseconds
+int eeprom_bpm;                 // BPM stored in EEPROM
+int bpm_value;                  // Later bpm * 4 because of the 4 rotary encoder steps
+int triggerLength = 2;	        // 1 = triggerLengthMS, 2 = half of bpm
+int stayOnTime;                 // How long the trigger should stay on in milliseconds when triggerLength = 2
+unsigned long currentTime;      // Timing stuff
+unsigned long previousTime = 0; // Timing stuff
+int state = 0;                  // Prevent trigger flood
+int rot_sw_state = 0;           // Rotary encoder SW state
+int rot_sw_temp = 0;            // Some dumb temp shit
+long rot_old_pos = 0;           // Don't ask
+
+// Pins for the rotary encoder up and down
+Encoder rot_enc(rot_dt, rot_clk);
+
+void setup() {
+  Serial.begin(9600);
+
+  // Read stored BPM data
+  if (EEPROM.read(0) != 1) {
+    // No BPM data stored, let's initialize it with 120 BPM
+    EEPROM.write(0, 1); // Set byte 0 to 1
+    EEPROM.write(1, 1); // 1 x 100
+    EEPROM.write(2, 2); // 2 x 10
+    EEPROM.write(3, 0); // 0 x 1
+    bpm = 120;
+    bpm_value = bpm * 4;
+    bpms = 60000 / bpm;
+    Serial.println("No stored BPM found. Initialized with 120 BPM.");
+  } else {
+    // BPM data stored
+    int a = EEPROM.read(1);
+    int b = EEPROM.read(2);
+    int c = EEPROM.read(3);
+    eeprom_bpm = (a * 100) + (b * 10) + (c * 1);
+    bpm = eeprom_bpm;
+    bpm_value = bpm * 4;
+    bpms = 60000 / bpm;
+    Serial.print("Stored BPM data found: ");
+    Serial.println(eeprom_bpm);
+  }
+
+  // Display
+  display.begin(SSD1306_SWITCHCAPVCC, 0x3C);
+  display.setTextColor(SSD1306_WHITE);
+  displayUpdate(bpm, bpm);
+
+  // Calculate how long the LED should stay on
+  if (triggerLength == 1) {
+    stayOnTime = triggerLengthMS;
+  } else if (triggerLength == 2) {
+    stayOnTime = bpms / 2;
+  }
+
+  // Enable inputs and outputs
+  pinMode(audio, OUTPUT);
+  pinMode(led, OUTPUT);
+  pinMode(rot_clk, INPUT);
+  pinMode(rot_dt, INPUT);
+  pinMode(rot_sw, INPUT);
+}
+
+void loop() {
+  // Beat stuff
+  currentTime = millis();
+
+  if (currentTime - previousTime >= bpms) {
+    triggerOn();
+    previousTime = currentTime;
+    state = 1;
+  }
+
+  if (currentTime - previousTime >= stayOnTime && state == 1) {
+    triggerOff();
+    state = 0;
+  }
+
+  // Rotary encoder stuff
+  long rot_new_pos = rot_enc.read();
+
+  if (rot_new_pos != rot_old_pos) {
+    if (rot_new_pos > rot_old_pos) {
+      bpm_value++;
+      if (bpm_value > bpm_value_max) {
+        bpm_value = bpm_value_max;
+      }
+    }
+
+    if (rot_new_pos < rot_old_pos) {
+      bpm_value--;
+      if (bpm_value < bpm_value_min) {
+        bpm_value = bpm_value_min;
+      }
+    }
+
+    displayUpdate(bpm, bpm_value / 4);
+
+    rot_old_pos = rot_new_pos;
+  }
+
+  // Rotary encoder button
+  rot_sw_state = digitalRead(rot_sw);
+
+  if (rot_sw_state == 1) {
+    rot_sw_temp = 0;
+  }
+
+  if (rot_sw_state == 0 && rot_sw_temp == 0) {
+    rot_sw_push();
+    rot_sw_temp = 1;
+  }
+}
+
+void triggerOn() {
+  Serial.print("Trigger ON at ");
+  Serial.print(currentTime);
+  Serial.println(" milliseconds");
+
+  digitalWrite(audio, HIGH);
+  digitalWrite(led, HIGH);
+}
+
+void triggerOff() {
+  Serial.print("Trigger OFF at ");
+  Serial.print(currentTime);
+  Serial.println(" milliseconds");
+
+  digitalWrite(audio, LOW);
+  digitalWrite(led, LOW);
+}
+
+void rot_sw_push() {
+  // Recalculate BPM stuff
+  bpm = bpm_value / 4;
+  bpms = 60000 / bpm;
+  if (triggerLength == 2) {
+    stayOnTime = bpms / 2;
+  }
+
+  Serial.print("BPM set to ");
+  Serial.println(bpm);
+
+  displayUpdate(bpm, bpm);
+
+  // Save new BPM to EEPROM
+  int a = bpm / 100;
+  int b = (bpm - (a * 100)) / 10;
+  int c = (bpm - (a * 100) - (b * 10));
+  EEPROM.write(1, a);
+  EEPROM.write(2, b);
+  EEPROM.write(3, c);
+}
+
+int displayUpdate(int bpm, int bpm2) {
+  display.clearDisplay();
+
+  display.setTextSize(1);
+  display.setCursor(0 + offset_x, 0 + offset_y);
+  display.println("cavaliere HEARTBEAT");
+
+  display.setTextSize(2);
+  display.setCursor(0 + offset_x, 18 + offset_y);
+  display.println("BPM");
+  display.setCursor(0 + offset_x, 40 + offset_y);
+  display.println("NEW");
+
+  String bpmToStr;
+  String bpm2ToStr;
+
+  // Leading whitespace when bpm < 100
+  display.setCursor(68 + offset_x, 18 + offset_y);
+  if (bpm < 100) {
+    bpmToStr = " " + String(bpm);
+  } else {
+    bpmToStr = String(bpm);
+  }
+  display.println(bpmToStr);
+
+  // Leading whitespace when bpm2 < 100
+  display.setCursor(68 + offset_x, 40 + offset_y);
+  if (bpm2 < 100) {
+    bpm2ToStr = " " + String(bpm2);
+  } else {
+    bpm2ToStr = String(bpm2);
+  }
+  display.println(bpm2ToStr);
+
+  display.display();
+  return 0;
+}
diff --git a/Fritzing/Circuit.fzz b/Fritzing/Circuit.fzz
new file mode 100644
index 0000000..2dd9988
Binary files /dev/null and b/Fritzing/Circuit.fzz differ
diff --git a/Fritzing/Rotary Encoder with switch (KY-040).fzpz b/Fritzing/Rotary Encoder with switch (KY-040).fzpz
new file mode 100644
index 0000000..ea15a9f
Binary files /dev/null and b/Fritzing/Rotary Encoder with switch (KY-040).fzpz differ
diff --git a/Front/Front Plate.psd b/Front/Front Plate.psd
new file mode 100644
index 0000000..95fcb3d
Binary files /dev/null and b/Front/Front Plate.psd differ
diff --git a/Logo/LCDAssistant.exe b/Logo/LCDAssistant.exe
new file mode 100644
index 0000000..428e034
Binary files /dev/null and b/Logo/LCDAssistant.exe differ
diff --git a/Logo/logo b/Logo/logo
new file mode 100644
index 0000000..96f57b5
--- /dev/null
+++ b/Logo/logo
@@ -0,0 +1,39 @@
+//------------------------------------------------------------------------------
+// File generated by LCD Assistant
+// http://en.radzio.dxp.pl/bitmap_converter/
+//------------------------------------------------------------------------------
+
+const unsigned char logo [] PROGMEM = {
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xEF, 0xEF, 0x01, 0x01, 0x01, 0x01, 0x01,
+0x00, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11, 0xFF, 0xFF, 0xEF, 0x00, 0x1F, 0xDF, 0xC0, 0x80, 0x80,
+0xDE, 0x5F, 0x1F, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11, 0xFF, 0xFF, 0xEF, 0x00, 0xEF, 0xEF, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xEF, 0xEF, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11, 0x11, 0x11,
+0x00, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x71, 0xFF, 0xDF, 0x0F, 0x00, 0xEF, 0xFF, 0x11, 0x11, 0x11,
+0x11, 0x11, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x81, 0x61, 0x10, 0x60, 0x80, 0x00, 0x01, 0x01, 0x00, 0x00,
+0x00, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x00, 0x00, 0x00, 0xE0, 0xF1, 0xF1,
+0xE0, 0xC1, 0xE1, 0xF1, 0xF1, 0xE1, 0x01, 0x01, 0x00, 0x00, 0x01, 0x01, 0x00, 0x01, 0x01, 0x01,
+0x01, 0x01, 0x81, 0x61, 0x10, 0x60, 0x81, 0x01, 0x00, 0x00, 0x00, 0x01, 0x01, 0x01, 0x00, 0x01,
+0x01, 0x01, 0x01, 0x01, 0x01, 0x01, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0xC0, 0xC0,
+0x00, 0x01, 0x01, 0x81, 0xC1, 0xC1, 0x01, 0xC1, 0xC1, 0x41, 0x40, 0x40, 0x40, 0x40, 0x01, 0x06,
+0xC8, 0xC6, 0x41, 0x41, 0x41, 0xC1, 0xC1, 0xC1, 0x01, 0xC1, 0xC1, 0x41, 0x41, 0x41, 0xC0, 0xC0,
+0xC0, 0x00, 0x41, 0x43, 0x47, 0x4F, 0x47, 0x43, 0x41, 0x00, 0x00, 0xC0, 0xC0, 0x41, 0x41, 0x41,
+0xC1, 0xC1, 0xC1, 0x01, 0xC1, 0xC1, 0x40, 0x40, 0x40, 0x40, 0x41, 0x06, 0x08, 0xC6, 0xC1, 0x41,
+0x41, 0x41, 0xC1, 0xC1, 0xC1, 0x01, 0x41, 0x41, 0x41, 0x41, 0x40, 0x40, 0x40, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x7B, 0x7F, 0x04, 0x04, 0x04, 0x3F, 0x7F, 0x7B, 0x00, 0x7B, 0x7F, 0x44, 0x44, 0x44,
+0x44, 0x44, 0x00, 0x00, 0x7B, 0x7F, 0x04, 0x04, 0x04, 0x3F, 0x7F, 0x7B, 0x00, 0x7B, 0x7F, 0x04,
+0x04, 0x1C, 0x7F, 0x77, 0x43, 0x00, 0x00, 0x00, 0x00, 0x77, 0x77, 0x00, 0x00, 0x00, 0x00, 0x7B,
+0x7F, 0x44, 0x44, 0x44, 0x7F, 0x7F, 0x7B, 0x00, 0x7B, 0x7F, 0x44, 0x44, 0x44, 0x44, 0x44, 0x00,
+0x00, 0x7B, 0x7F, 0x04, 0x04, 0x04, 0x3F, 0x7F, 0x7B, 0x00, 0x00, 0x00, 0x00, 0x77, 0x77, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00,
+0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 0x00, 
+};
diff --git a/Logo/logo.bmp b/Logo/logo.bmp
new file mode 100644
index 0000000..6717963
Binary files /dev/null and b/Logo/logo.bmp differ