From cc33986acca6625c6ed1303c87811a018efbdcce Mon Sep 17 00:00:00 2001
From: Sebastian Nieto <sebanieto@gmail.com>
Date: Wed, 9 Sep 2026 23:31:26 -0300
Subject: [PATCH] feat: standardize all touch and UI beeps to crisp 4096 Hz
 chirp

---
 sketch/obd2_gauge/config.h       | 16 ++++++++--------
 sketch/obd2_gauge/obd2_gauge.ino |  2 +-
 2 files changed, 9 insertions(+), 9 deletions(-)

diff --git a/sketch/obd2_gauge/config.h b/sketch/obd2_gauge/config.h
index 2d1ece0..4081443 100644
--- a/sketch/obd2_gauge/config.h
+++ b/sketch/obd2_gauge/config.h
@@ -9,9 +9,9 @@ Configuration menu for OBD2 Gauge with volume and per-instrument alarm controls
 #define FORMAT_SPIFFS_IF_FAILED true
 
 /*------------ SOUND EFFECTS ----------*/
-// 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 = 20) {
-  uint16_t duty = VOL_DUTY_TABLE[buzzerVolumeLevel > 5 ? 2 : buzzerVolumeLevel];
+// Crisp High-Pitch Casio Chirp (4096 Hz, 25ms)
+inline void casioBeep(uint16_t freq = 4096, uint8_t duration_ms = 25) {
+  uint16_t duty = VOL_DUTY_TABLE[buzzerVolumeLevel > 5 ? 3 : buzzerVolumeLevel];
   if (duty == 0) return; // Mute mode
   ledcSetup(buzzerChannel, freq, 10);
   ledcWrite(buzzerChannel, duty);
@@ -20,17 +20,17 @@ inline void casioBeep(uint16_t freq = 2048, uint8_t duration_ms = 20) {
 }
 
 void beepbeep() {
-  casioBeep(2048, 30);
+  casioBeep(4096, 25);
   delay(30);
-  casioBeep(2048, 30);
+  casioBeep(4096, 25);
 }
 
 void beep() {
-  casioBeep(2048, 150);
+  casioBeep(4096, 40);
 }
 
 void clickSound() {
-  casioBeep(2048, 20);
+  casioBeep(4096, 25);
 }
 
 // Configuration menu list (3 options)
@@ -258,7 +258,7 @@ void volumeMenu() {
         if (touchedLvl >= 0 && touchedLvl <= 5) {
           buzzerVolumeLevel = touchedLvl;
           drawVolUI();
-          casioBeep(2048, 20); // Immediate acoustic feedback at selected volume
+          casioBeep(4096, 25); // Immediate acoustic feedback at selected volume
         }
         while (isScreenPressed()) { delay(10); yield(); }
         delay(50);
diff --git a/sketch/obd2_gauge/obd2_gauge.ino b/sketch/obd2_gauge/obd2_gauge.ino
index 4b613f8..53b8ea0 100644
--- a/sketch/obd2_gauge/obd2_gauge.ino
+++ b/sketch/obd2_gauge/obd2_gauge.ino
@@ -378,7 +378,7 @@ void loop() {
       lastTouchX = touchX;
       lastTouchY = touchY;
       longPressHandled = false;
-      casioBeep(2048, 20); // Soft, instant Casio beep ONLY on touch screen press!
+      casioBeep(4096, 25); // Crisp, bright Casio chirp on touch screen press!
     } else if (!longPressHandled && (millis() - touchStartTime > 1000)) {
       // Long press (> 1s): Open Config Menu!
       longPressHandled = true;