diff --git a/lib/calibrateCompass/calibrateCompass.cpp b/lib/calibrateCompass/calibrateCompass.cpp
index d0ddd10..a90f453 100644
--- a/lib/calibrateCompass/calibrateCompass.cpp
+++ b/lib/calibrateCompass/calibrateCompass.cpp
@@ -73,14 +73,11 @@ void CalibrateCompass::start() {
 
     this->clearData();
     this->state = State::Calibrating;
-    this->compass->setCalibration(0, 0, 0, 0, 0, 0);
+    this->compass->removeCalibration();
     this->lastChange = millis();
 }
 
 void CalibrateCompass::useData() {
-    if (this->state != State::Finished)
-        return;
-    
     this->compass->setCalibration(  this->data.data[0][0],
                                     this->data.data[0][1],
                                     this->data.data[1][0],
@@ -88,11 +85,13 @@ void CalibrateCompass::useData() {
                                     this->data.data[2][0],
                                     this->data.data[2][1]
                                     );
+
+    std::cout << "CalibrateCompass::useData " << *this << std::endl;                                    
 }
 
 void CalibrateCompass::resetData() {
     this->reset();
-    this->compass->setCalibration(0, 0, 0, 0, 0, 0);
+    this->compass->removeCalibration();
 }
 
 void CalibrateCompass::reset() {
@@ -137,3 +136,20 @@ void CalibrateCompass::clearData() {
         this->data.data[i][1] = 0;
     }
 }
+
+std::ostream& operator<<(std::ostream& os, const CalibrateCompass& caliComp) {
+    os << "(";
+    os << caliComp.data.data[0][0];
+    os << ", ";
+    os << caliComp.data.data[0][1];
+    os << ", ";
+    os << caliComp.data.data[1][0];
+    os << ", ";
+    os << caliComp.data.data[1][1];
+    os << ", ";
+    os << caliComp.data.data[2][0];
+    os << ", ";
+    os << caliComp.data.data[2][1];
+    os << ")";
+    return os;
+}
diff --git a/lib/calibrateCompass/calibrateCompass.h b/lib/calibrateCompass/calibrateCompass.h
index 4483a79..4f726fe 100644
--- a/lib/calibrateCompass/calibrateCompass.h
+++ b/lib/calibrateCompass/calibrateCompass.h
@@ -13,6 +13,7 @@
 
 #include <QMC5883LCompass.h>
 #include <Preferences.h>
+#include <iostream>
 
 class CalibrateCompass {
     public:
@@ -39,6 +40,8 @@ class CalibrateCompass {
         State getState() const { return this->state; }
         CallibrationData getCallibrationData() const { return this->data; }
 
+        friend std::ostream& operator<<(std::ostream& os, const CalibrateCompass& caliComp);
+
     private:
         QMC5883LCompass* compass;
         State state;