Beep only on screen touch, eliminate alarm beeps, and soften buzzer volume

sketch/obd2_gauge/config.h

@@ -9,25 +9,29 @@ Configuration menu for OBD2 Gauge
 #define FORMAT_SPIFFS_IF_FAILED true
 
 /*------------ SOUND EFFECTS ----------*/
+// Buzzer volume control: duty cycle out of 1023 (512 = 100% max loud, 40 = soft, gentle chirp)
+const uint16_t CASIO_BEEP_DUTY = 40;
+
 // Classic Casio Watch Beep (F-91W / G-Shock Module 593: 32768 / 16 = 2048 Hz, exact C7 note)
-inline void casioBeep(uint16_t freq = 2048, uint8_t duration_ms = 24) {
+inline void casioBeep(uint16_t freq = 2048, uint8_t duration_ms = 20, uint16_t duty = CASIO_BEEP_DUTY) {
-  ledcWriteTone(buzzerChannel, freq);
+  ledcSetup(buzzerChannel, freq, 10);
+  ledcWrite(buzzerChannel, duty);
   delay(duration_ms);
-  ledcWriteTone(buzzerChannel, 0);
+  ledcWrite(buzzerChannel, 0);
 }
 
 void beepbeep() {
-  casioBeep(2048, 35);
+  casioBeep(2048, 30);
-  delay(35);
+  delay(30);
-  casioBeep(2048, 35);
+  casioBeep(2048, 30);
 }
 
 void beep() {
-  casioBeep(2048, 200);
+  casioBeep(2048, 150);
 }
 
 void clickSound() {
-  casioBeep(2048, 24);
+  casioBeep(2048, 20);
 }
 
 // Configuration menu list

sketch/obd2_gauge/meter.h

@@ -1270,13 +1270,6 @@ void updateMeter(uint8_t pidNo, String response) { // update parameter on screen
 
   last_valid_data[pidNo] = data;
 
-  // Alarm warning audio alert
-  if (warn > 0 && data >= warn) {
-    ledcWriteTone(buzzerChannel, 2000);
-    delay(10);
-    ledcWriteTone(buzzerChannel, 0);
-  }
-
   if (fullScreenCell >= 0 && fullScreenCell < 4) {
     if (pidNo == fullScreenCell) {
       plotFullScreen(fullScreenCell, data, warn, min, max, digit, unit);

sketch/obd2_gauge/obd2_gauge.ino

@@ -361,19 +361,19 @@ void loop() {
   static int8_t clickQuadrant = -1;
   static bool longPressHandled = false;
 
-  if (isTouched || btnPressed) {
+  if (isTouched) {
     if (!isTouching) {
       isTouching = true;
       touchStartTime = millis();
       lastTouchX = touchX;
       lastTouchY = touchY;
       longPressHandled = false;
-      casioBeep(2048, 24); // Instant Casio beep on every screen touch!
+      casioBeep(2048, 20); // Soft, instant Casio beep ONLY on touch screen press!
     } else if (!longPressHandled && (millis() - touchStartTime > 1000)) {
-      // Long press (> 1s) or button hold: Open Config Menu!
+      // Long press (> 1s): Open Config Menu!
       longPressHandled = true;
       clickCount = 0;
-      casioBeep(4096, 35); // High confirmation beep
+      casioBeep(4096, 30); // High confirmation chirp
       configMenu();
       if (foundOBD2) initScreen();
       isTouching = false;

sketch/obd2_gauge/touchscreen.h

@@ -29,12 +29,15 @@ bool getTouch(uint16_t *x, uint16_t *y) {
   if (ts.touched(tsSoftSpi)) {
     TS_Point p = ts.getPoint(tsSoftSpi);
 
+    // Filter noise: require solid touch pressure and coordinates within active screen
+    if (p.z < 600) return false;
+    if (p.x < 150 || p.x > 3850 || p.y < 150 || p.y > 3850) return false;
+
     int16_t tx = map(p.x, 200, 3700, 0, 320);
     int16_t ty = map(p.y, 240, 3800, 0, 240);
 
     *x = constrain(tx, 0, 319);
     *y = constrain(ty, 0, 239);
-    Serial.printf("[TOUCH] raw:(%d,%d,z=%d) -> screen:(%d,%d)\n", p.x, p.y, p.z, *x, *y);
     return true;
   }
   return false;