From c20e8079be7e22fc1f994e5df2f30bd12a953f91 Mon Sep 17 00:00:00 2001
From: Sebastian Nieto <sebanieto@gmail.com>
Date: Mon, 21 Sep 2026 23:40:49 -0300
Subject: [PATCH] fix(touch): calibrar umbral Z a 170 para eliminar toques
 fantasma con sensibilidad equilibrada

---
 sketch/obd2_gauge/XPT2046_TouchscreenSOFTSPI.cpp | 4 ++--
 sketch/obd2_gauge/obd2_gauge.ino                 | 7 ++++---
 sketch/obd2_gauge/touchscreen.h                  | 2 +-
 3 files changed, 7 insertions(+), 6 deletions(-)

diff --git a/sketch/obd2_gauge/XPT2046_TouchscreenSOFTSPI.cpp b/sketch/obd2_gauge/XPT2046_TouchscreenSOFTSPI.cpp
index 56f25b0..9292dcd 100644
--- a/sketch/obd2_gauge/XPT2046_TouchscreenSOFTSPI.cpp
+++ b/sketch/obd2_gauge/XPT2046_TouchscreenSOFTSPI.cpp
@@ -22,8 +22,8 @@
 
 #include "XPT2046_TouchscreenSOFTSPI.h"
 
-#define Z_THRESHOLD     400
-#define Z_THRESHOLD_INT	75
+#define Z_THRESHOLD     170
+#define Z_THRESHOLD_INT	100
 #define MSEC_THRESHOLD  3
 #define SPI_SETTING     SPISettings(2000000, MSBFIRST, SPI_MODE0)
 
diff --git a/sketch/obd2_gauge/obd2_gauge.ino b/sketch/obd2_gauge/obd2_gauge.ino
index 9550619..816ca45 100644
--- a/sketch/obd2_gauge/obd2_gauge.ino
+++ b/sketch/obd2_gauge/obd2_gauge.ino
@@ -633,12 +633,13 @@ void loop() {
     // Touch / button released
     if (isTouching) {
       isTouching = false;
+
       if (!longPressHandled) {
         int16_t deltaX = (int16_t)lastTouchX - (int16_t)touchStartX;
         int16_t deltaY = (int16_t)lastTouchY - (int16_t)touchStartY;
 
-        // Check for horizontal swipe gesture (displacement > 45px, mostly horizontal)
-        if (deltaX < -45 && abs(deltaY) < 90) {
+        // Balanced swipe detection: 40px displacement required, horizontal gesture
+        if (deltaX < -40 && abs(deltaY) < 90) {
           // SWIPE LEFT: Page 0 -> Page 1 (Tri-Temperature Screen)
           if (fullScreenCell != -1) {
             fullScreenCell = -1;
@@ -648,7 +649,7 @@ void loop() {
             currentScreenPage = 1;
             initScreen();
           }
-        } else if (deltaX > 45 && abs(deltaY) < 90) {
+        } else if (deltaX > 40 && abs(deltaY) < 90) {
           // SWIPE RIGHT: Page 1 -> Page 0 (4 Quadrants)
           if (fullScreenCell != -1) {
             fullScreenCell = -1;
diff --git a/sketch/obd2_gauge/touchscreen.h b/sketch/obd2_gauge/touchscreen.h
index 5615fa1..3cf45a9 100644
--- a/sketch/obd2_gauge/touchscreen.h
+++ b/sketch/obd2_gauge/touchscreen.h
@@ -24,7 +24,7 @@ bool getTouch(uint16_t *x, uint16_t *y) {
     TS_Point p = ts.getPoint(tsSoftSpi);
 
     // Filter noise: require valid touch pressure and coordinates within active screen
-    if (p.z < 350) return false;
+    if (p.z < 160) 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);