diff --git a/src/my_buttons.cpp b/src/my_buttons.cpp
index aecb180..e8a1008 100644
--- a/src/my_buttons.cpp
+++ b/src/my_buttons.cpp
@@ -25,6 +25,7 @@ if (!cap.begin(0x5A)) {
     while (1);
   }
   Serial.println("MPR121 found!");
+  cap.setThresholds (8,4);
 }
 
 
diff --git a/src/oorobot.ino b/src/oorobot.ino
index 841a4a7..2df3942 100644
--- a/src/oorobot.ino
+++ b/src/oorobot.ino
@@ -168,6 +168,8 @@ void loop() {
   int buttonId = getPressedButton();
   char button = 0;
   if (buttonId >= 0) {
+    Serial.print(F("buttonId : "));
+    Serial.println(buttonId);
     button = buttonsMap[buttonId];
     if (button != 0) {
       actionButtonForScreen(button);