Adapted to PCB 2026-02

KiCad/0004-DenshaBekutoru_v0.2/0004-DenshaBekutoru_v0.2.kicad_prl

@@ -1,6 +1,6 @@
 {
   "board": {
-    "active_layer": 0,
+    "active_layer": 33,
     "active_layer_preset": "All Layers",
     "auto_track_width": true,
     "hidden_netclasses": [],

KiCad/0004-DenshaBekutoru_v0.2/0004-DenshaBekutoru_v0.2.kicad_pro

@@ -58,7 +58,12 @@
           "width": 0.0
         }
       ],
-      "drc_exclusions": [],
+      "drc_exclusions": [
+        "courtyards_overlap|116847500|113255000|4b518c68-cacc-4ba0-bdd7-4ed203d87dd8|c5b5c5e2-5bf5-406f-bc2c-791c87e4bd5a",
+        "courtyards_overlap|116847500|116747500|4b518c68-cacc-4ba0-bdd7-4ed203d87dd8|ce87971b-d681-44d7-9fb7-23a15933148a",
+        "courtyards_overlap|126372500|116747500|1094a2e1-479d-4870-8b87-1411fc6da792|4b518c68-cacc-4ba0-bdd7-4ed203d87dd8",
+        "courtyards_overlap|130322874|113255000|4b518c68-cacc-4ba0-bdd7-4ed203d87dd8|ee659d06-72c1-451a-8938-35a721a086e2"
+      ],
       "meta": {
         "version": 2
       },
@@ -96,7 +101,7 @@
         "padstack": "warning",
         "pth_inside_courtyard": "ignore",
         "shorting_items": "error",
-        "silk_edge_clearance": "warning",
+        "silk_edge_clearance": "ignore",
         "silk_over_copper": "warning",
         "silk_overlap": "warning",
         "skew_out_of_range": "error",
@@ -178,7 +183,9 @@
         }
       ],
       "track_widths": [
-        0.0
+        0.0,
+        0.508,
+        1.27
       ],
       "tuning_pattern_settings": {
         "diff_pair_defaults": {
@@ -489,7 +496,7 @@
       "gencad": "",
       "idf": "",
       "netlist": "../../../../../../",
-      "plot": "",
+      "plot": "/home/tgohle/Desktop/git/ToGo-Lab/0004-DenshaBekutoru/KiCad/0004-DenshaBekutoru_PCB_v0.2/",
       "pos_files": "",
       "specctra_dsn": "",
       "step": "",

firmware/ArduinoTest/DenshaBekutoru-0004_Version-0-2_ProMini_PCB2026-2_V01/DenshaBekutoru-0004_Version-0-2_ProMini_PCB2026-2_V01.ino

@@ -0,0 +1,287 @@
+/*
+  0004_DenshaBekutoru – 1st Version PCB
+ 
+  PCB Version      : 2026/02 (Order F016895)
+  Target dev board : Arduino Pro Mini 5V / 16 MHz (ATmega328P)
+  
+  ----------------------------------------------------------------------------
+  State machine (direction memory) + Hysteresis (Version A)
+  ----------------------------------------------------------------------------
+  We use two thresholds:
+    T_hold  (smaller): below -> treat as neutral and HOLD state
+    T_enter (larger) : above -> allow direction change (set by sign)
+
+  Behavior:
+    If |diff| <= T_hold  : hold direction
+    If |diff| >= T_enter : set direction by sign
+    Else (between)       : hold direction
+
+  Presets (implemented as multipliers of the calibrated VdiffThreshold):
+    T_hold  = 1.0 * VdiffThreshold
+    T_enter = 2.0 * VdiffThreshold
+
+  Inputs derived from v1, v2: diff = v1 - v2
+*/
+
+const unsigned long SAMPLE_WINDOW_MS = 100;   // averaging window per measurement
+const unsigned long SAMPLE_DELAY_US  = 500;   // delay between ADC samples (~2 kHz)
+
+const uint8_t ADC_PIN_1 = A0;  // Pro Mini A0 -> (PCB dependend!)
+const uint8_t ADC_PIN_2 = A1;  // Pro Mini A1 -> (PCB dependend")
+
+// Direction LEDs (avoid D0/D1 because you may want RX/TX later)
+const uint8_t LED_DIR1_PIN = 3;  // D3
+const uint8_t LED_DIR2_PIN = 9;  // D9
+
+const unsigned int LED_BLINK_ON_MS  = 150;
+const unsigned int LED_BLINK_OFF_MS = 150;
+
+// Serial output control (0 = no output, 1 = output)
+bool SerialOutputAllow = true;
+
+// ---- Calibration parameters ----
+const uint16_t AverageRepeat = 100;          // number of init measurements
+const float VdiffThresholdMargin = 1.50f;    // multiplier (e.g., 1.5 = +50% margin)
+const float VdiffThresholdMinVolts = 0.03f;  // floor in volts
+
+// ---- Hysteresis presets (multipliers of VdiffThreshold) ----
+const float THOLD_MULT  = 1.0f;  // T_hold  = THOLD_MULT  * VdiffThreshold
+const float TENTER_MULT = 2.0f;  // T_enter = TENTER_MULT * VdiffThreshold
+
+// Globals: latest measured averaged voltages
+float v1 = 0.0f;
+float v2 = 0.0f;
+
+// Calibration globals
+float VdiffBaseline = 0.0f;   // median(|V1-V2|) measured at boot (no movement)
+float VdiffThreshold = 0.0f;  // calibrated base threshold (used to derive T_hold/T_enter)
+
+// Hysteresis thresholds (derived once after calibration)
+float T_hold  = 0.0f;
+float T_enter = 0.0f;
+
+// Direction encoding:
+// 0 = NONE, 2 = DIR1, 3 = DIR2
+byte direction = 0;
+
+static inline float absf(float x) { return (x >= 0.0f) ? x : -x; }
+static inline float maxf(float a, float b) { return (a > b) ? a : b; }
+
+// -----------------------------------------------------------------------------
+// LED helpers
+// -----------------------------------------------------------------------------
+static void blinkLED(uint8_t pin, uint8_t times)
+{
+  for (uint8_t i = 0; i < times; i++) {
+    digitalWrite(pin, HIGH);
+    delay(LED_BLINK_ON_MS);
+    digitalWrite(pin, LOW);
+    delay(LED_BLINK_OFF_MS);
+  }
+}
+
+static void initBlinkSequence()
+{
+  // LED at Output 2 blinks 2 times
+  blinkLED(LED_DIR1_PIN, 2);
+
+  // LED at Output 3 blinks 3 times
+  blinkLED(LED_DIR2_PIN, 3);
+}
+
+static void applyDirectionOutputs()
+{
+  digitalWrite(LED_DIR1_PIN, LOW);
+  digitalWrite(LED_DIR2_PIN, LOW);
+
+  if (direction == 2) {
+    digitalWrite(LED_DIR1_PIN, HIGH);
+  } else if (direction == 3) {
+    digitalWrite(LED_DIR2_PIN, HIGH);
+  }
+}
+
+// -----------------------------------------------------------------------------
+// Measurement
+// -----------------------------------------------------------------------------
+static void measureAveragedVoltages()
+{
+  unsigned long startTime = millis();
+
+  unsigned long sum1 = 0;
+  unsigned long sum2 = 0;
+  unsigned long samples = 0;
+
+  while (millis() - startTime < SAMPLE_WINDOW_MS) {
+    sum1 += analogRead(ADC_PIN_1);
+    sum2 += analogRead(ADC_PIN_2);
+    samples++;
+    delayMicroseconds(SAMPLE_DELAY_US);
+  }
+
+  float avg1 = (float)sum1 / samples;
+  float avg2 = (float)sum2 / samples;
+
+  // Convert ADC value to voltage (default analog reference = Vcc ~ 5V)
+  v1 = avg1 * (5.0f / 1023.0f);
+  v2 = avg2 * (5.0f / 1023.0f);
+}
+
+// -----------------------------------------------------------------------------
+// Median helpers (for calibration)
+// -----------------------------------------------------------------------------
+static void sortFloatArray(float *a, uint16_t n)
+{
+  // Insertion sort (n=100 is small, OK)
+  for (uint16_t i = 1; i < n; i++) {
+    float key = a[i];
+    int16_t j = (int16_t)i - 1;
+    while (j >= 0 && a[j] > key) {
+      a[j + 1] = a[j];
+      j--;
+    }
+    a[j + 1] = key;
+  }
+}
+
+static float medianOfSortedFloatArray(const float *a, uint16_t n)
+{
+  if (n == 0) return 0.0f;
+  if (n & 1) {
+    return a[n / 2];
+  } else {
+    return (a[(n / 2) - 1] + a[n / 2]) * 0.5f;
+  }
+}
+
+// Calibrate baseline + VdiffThreshold once at boot/reset
+static void calibrateVdiffThreshold(uint16_t averageRepeat)
+{
+  if (averageRepeat < 1) averageRepeat = 1;
+  if (averageRepeat > 200) averageRepeat = 200; // RAM safety cap
+
+  float diffs[200];
+
+  for (uint16_t i = 0; i < averageRepeat; i++) {
+    measureAveragedVoltages();
+    diffs[i] = absf(v1 - v2); // baseline mismatch sample
+  }
+
+  sortFloatArray(diffs, averageRepeat);
+  VdiffBaseline = medianOfSortedFloatArray(diffs, averageRepeat);
+
+  // Calibrated base threshold with margin + floor
+  VdiffThreshold = maxf(VdiffBaseline * VdiffThresholdMargin, VdiffThresholdMinVolts);
+
+  // Derive hysteresis thresholds (Version A)
+  T_hold  = THOLD_MULT  * VdiffThreshold;
+  T_enter = TENTER_MULT * VdiffThreshold;
+}
+
+// -----------------------------------------------------------------------------
+// State machine with hysteresis (Version A)
+// -----------------------------------------------------------------------------
+static void updateDirectionFromVoltages()
+{
+  const float diff = v1 - v2;
+  const float absDiff = absf(diff);
+
+  // 1) Neutral region: HOLD
+  if (absDiff <= T_hold) {
+    return;
+  }
+
+  // 2) Strong region: allow direction change
+  if (absDiff >= T_enter) {
+    direction = (diff > 0.0f) ? (byte)2 : (byte)3;
+    return;
+  }
+
+  // 3) Deadband between T_hold and T_enter: HOLD
+  return;
+}
+
+// -----------------------------------------------------------------------------
+// Serial output
+// -----------------------------------------------------------------------------
+static void serialPrintAll()
+{
+  if (!SerialOutputAllow) return;
+
+  Serial.print("A2 for PB3  XTAL1, Pin2: ");
+  Serial.print(v1, 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("A3 for PB4 XTAL2, Pin3: ");
+  Serial.print(v2, 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("|V1-V2|: ");
+  Serial.print(absf(v1 - v2), 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("VdiffBaseline: ");
+  Serial.print(VdiffBaseline, 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("VdiffThreshold: ");
+  Serial.print(VdiffThreshold, 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("T_hold: ");
+  Serial.print(T_hold, 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("T_enter: ");
+  Serial.print(T_enter, 3);
+  Serial.print(" V   |   ");
+
+  Serial.print("direction: ");
+  Serial.println(direction);
+}
+
+// -----------------------------------------------------------------------------
+// Arduino entry points
+// -----------------------------------------------------------------------------
+void setup() {
+  Serial.begin(115200);
+
+  pinMode(ADC_PIN_1, INPUT);
+  pinMode(ADC_PIN_2, INPUT);
+
+  pinMode(LED_DIR1_PIN, OUTPUT);
+  pinMode(LED_DIR2_PIN, OUTPUT);
+
+  // Initial calibration (assumes no movement)
+  calibrateVdiffThreshold(AverageRepeat);
+
+  // Init blink sequence: 2x on D2, 3x on D3
+  initBlinkSequence();
+
+  // One measurement for initial display + initial direction
+  measureAveragedVoltages();
+  updateDirectionFromVoltages();
+  applyDirectionOutputs();
+
+  if (SerialOutputAllow) {
+    Serial.println("=== DenshaBekutoru Optocoupler Average Test (Arduino Pro Mini 5V/16MHz) ===");
+    Serial.print("AverageRepeat: ");
+    Serial.println(AverageRepeat);
+    Serial.print("THOLD_MULT: ");
+    Serial.print(THOLD_MULT, 2);
+    Serial.print("   TENTER_MULT: ");
+    Serial.println(TENTER_MULT, 2);
+  }
+
+  serialPrintAll();
+}
+
+void loop() {
+  measureAveragedVoltages();
+  updateDirectionFromVoltages();
+  applyDirectionOutputs();
+
+  serialPrintAll();
+
+  delay(300);
+}