diff --git a/esp32/include/ControllerConfiguration.h b/esp32/include/ControllerConfiguration.h
index 2edae32..7bdc650 100644
--- a/esp32/include/ControllerConfiguration.h
+++ b/esp32/include/ControllerConfiguration.h
@@ -37,6 +37,8 @@
  *  }
  *  \enddot
  * 
+ * Before entering Deep sleep the controller is configured with an wakeup time.
+ * 
  * @}
  */
 #ifndef CONTROLLER_CONFIG_H
@@ -52,7 +54,7 @@
 #define MOIST_SENSOR_MIN_ADC                (25 * 4095 / 100)
 
 #define SOLAR_VOLT(adc) ADC_TO_VOLT_WITH_MULTI(adc, 4.0306) /**< 100k and 33k voltage dividor */
-#define ADC_5V_TO_3V3(adc) ADC_TO_VOLT_WITH_MULTI(adc, 1.7) /**< 33k and 47k8 voltage dividor */
+#define ADC_5V_TO_3V3(adc) ADC_TO_VOLT_WITH_MULTI(adc, 1.69) /**< 33k and 47k8 voltage dividor */
 #define MS_TO_S 1000
 
 #define SENSOR_LIPO 34   /**< GPIO 34 (ADC1) */
diff --git a/esp32/src/main.cpp b/esp32/src/main.cpp
index 541e6c5..666887e 100644
--- a/esp32/src/main.cpp
+++ b/esp32/src/main.cpp
@@ -115,8 +115,11 @@ long getLastMoisture(int plantId)
 
 void readSystemSensors()
 {
-  lipoRawSensor.add(analogRead(SENSOR_LIPO));
-  solarRawSensor.add(analogRead(SENSOR_SOLAR));
+  for (int i=0; i < 5; i++) {
+    lipoRawSensor.add(analogRead(SENSOR_LIPO));
+    solarRawSensor.add(analogRead(SENSOR_SOLAR));
+  }
+  Serial << "Lipo " << lipoRawSensor.getAverage() << " -> " << getBatteryVoltage() << endl;
 }
 
 int determineNextPump();