clean up measurements and serial output

include/ec.h

@@ -6,6 +6,10 @@
 
 bool ec_flag_measurement_available=false;
 
+#define EC_ADC_UNAVAILABLE 0
+#define EC_UNAVAILABLE -1
+
+
 #define EC_PIN_RELAY_PROBE 27
 
 
@@ -16,7 +20,7 @@ bool ec_flag_measurement_available=false;
 #define EC_RESOLUTION 8
 #define EC_FREQUENCY 5000
 
-#define EC_CALIB_ARRAY_SIZE 256
+#define EC_CALIB_ARRAY_SIZE 128
 uint16_t ec_calib_array[EC_CALIB_ARRAY_SIZE];
 uint16_t ec_calib_array_pos=0;
 #define EC_CALIB_READ_INTERVAL 250 //interval of reading adc value inside a measurement
@@ -46,8 +50,10 @@ float ec_calib_adc;
 float ec; //ec value after adjustment for reference (at current temperature)
 float ec25; //ec value but temperature adjusted for 25 degC
 
-float ec_tempadjust_alpa=0.2; //TODO
+float ec_tempadjust_alpa=0.02;
 float ec_reference_adc=6016.88; //adc reference value for the calibration resistor measurement.
+//EC short circuit adc value: 17497 (for connection restistance testing)
+//EC open circuit adc value: 738
 
 //x^0*p[0] + ... + x^n*p[n]
 //float ec_calibration_polynom[]={691.5992624638029,-1.4015367296761692,0.0008513503472324141,-2.2140576823179093e-07,2.8962580780180067e-11,-1.8577565383307114e-15,4.7162479484903865e-20};
@@ -62,6 +68,7 @@ void ec_setRange(uint8_t range);
 void ec_connectProbe(bool);
 void ec_releaseRelay();
 float ec_getECfromADC(float adc);
+float ec_calculateEC25(float pEC,float pTemp);
 
 void ec_setup() {
   ledcSetup(EC_PWM_CH, EC_FREQUENCY, EC_RESOLUTION);
@@ -93,10 +100,16 @@ void ec_loop(unsigned long loopmillis) {
       if (ec_measurementReady()) {
         ec_releaseRelay();
         ec_adc=getMean(ec_array,EC_ARRAY_SIZE);
-        if (isValueArrayOK(ec_calib_array,EC_CALIB_ARRAY_SIZE,0)){
+        if (isValueArrayOK(ec_calib_array,EC_CALIB_ARRAY_SIZE,EC_ADC_UNAVAILABLE)){
           ec_calib_adc=getMean(ec_calib_array,EC_CALIB_ARRAY_SIZE);
           ec_adc_adjusted=mapf(ec_adc,0,ec_calib_adc,0,ec_reference_adc);
           ec=ec_getECfromADC(ec_adc_adjusted);
+          ec25=ec_calculateEC25(ec,tempC_reservoir);
+        }else{
+          ec_calib_adc=EC_ADC_UNAVAILABLE;
+          ec_adc_adjusted=EC_ADC_UNAVAILABLE;
+          ec=EC_UNAVAILABLE;
+          ec25=EC_UNAVAILABLE;
         }
 
         ec_flag_measurement_available=true;
@@ -189,5 +202,10 @@ float ec_getECfromADC(float adc) {
   return _ec;
 }
 
+float ec_calculateEC25(float pEC,float pTemp) 
+{
+  return pEC/(1.0+ec_tempadjust_alpa*(pTemp-25.0));
+}
+
 
 #endif

include/flow.h

@@ -5,7 +5,7 @@
 uint16_t flow_counter=0; //maximum counts/s measured with Eden 128 Pump was 171
 void IRAM_ATTR isr_flow();
 unsigned long last_read_flow=0;
-#define READINTERVAL_FLOW 1000
+#define READINTERVAL_FLOW 2000
 float flow_factor=7.5; //F=7.5*flowrate[L/min]
 float flow;
 

include/soilmoisture.h

@@ -2,25 +2,95 @@
 #define _SOILMOISTURE_H_
 
 #define SM1_ADS_CHANNEL 1
+#define SM2_ADS_CHANNEL 2
+#define SM3_ADS_CHANNEL 3
 
 #define READINTERVAL_SM 100
 
+
+//Calibration values
+//high=adc value for sensor in air
+//low=adc value for sensor in NaCl solution at 25°C with 12880 uS/cm
+float sm1_low=45555;
+float sm1_high=11799;
+float sm2_low=3235;
+float sm2_high=16050;
+float sm3_low=0;
+float sm3_high=16000;
+//sm1 is underwater reservoir soilmoisture sensor (#2)
+//sm2 is soilmoisture sensor (#1)
+
+
 unsigned long last_read_sm=0;
 
 
 #define SM_SIZE 16
 uint8_t sm_mean_pos=0;
-uint16_t sm_mean[SM_SIZE];
+uint16_t sm_mean1array[SM_SIZE];
+uint16_t sm_mean2array[SM_SIZE];
+uint16_t sm_mean3array[SM_SIZE];
 
 
+#define SM_DISCONNECTED -1
+
+float sm_mean1=SM_DISCONNECTED;
+float sm_mean2=SM_DISCONNECTED;
+float sm_mean3=SM_DISCONNECTED;
+
+
+
+uint8_t sm_readchannel=0;
+
+
+void sm_setup() {
+  for (uint16_t i=0;i<SM_SIZE;i++) {
+    sm_mean1array[i]=SM_DISCONNECTED;
+    sm_mean2array[i]=SM_DISCONNECTED;
+    sm_mean3array[i]=SM_DISCONNECTED;
+  }
+
+}
+
 void sm_loop(unsigned long loopmillis) {
     if (loopmillis>=last_read_sm+READINTERVAL_SM) {
-        last_read_sm=loopmillis;  
         
-        uint16_t value = ADS.readADC(SM1_ADS_CHANNEL);
+        switch (sm_readchannel) {
-        sm_mean[sm_mean_pos]=value;
+            case 0:
-        sm_mean_pos++;
+                sm_mean1array[sm_mean_pos]=ADS.readADC(SM1_ADS_CHANNEL);
-        sm_mean_pos%=SM_SIZE;       
+                sm_readchannel++;
+
+                break;
+            case 1:
+                sm_mean2array[sm_mean_pos]=ADS.readADC(SM2_ADS_CHANNEL);
+                sm_readchannel++;
+
+                break;
+
+            default: //2 and above
+                
+                sm_mean3array[sm_mean_pos]=ADS.readADC(SM3_ADS_CHANNEL);
+                sm_readchannel=0;
+
+                sm_mean_pos++;
+                sm_mean_pos%=SM_SIZE;  
+                last_read_sm=loopmillis; 
+
+                
+
+                if (isValueArrayOK(sm_mean1array,SM_SIZE,SM_DISCONNECTED)){
+                    float _sm_mean_raw;
+                    _sm_mean_raw=getMean(sm_mean1array,SM_SIZE);
+                    sm_mean1=mapf(_sm_mean_raw,sm1_low,sm1_high,1.0,0.0);
+
+                    _sm_mean_raw=getMean(sm_mean2array,SM_SIZE);
+                    sm_mean2=mapf(_sm_mean_raw,sm2_low,sm2_high,1.0,0.0);
+
+                    _sm_mean_raw=getMean(sm_mean3array,SM_SIZE);
+                    sm_mean3=mapf(_sm_mean_raw,sm3_low,sm3_high,1.0,0.0);
+                }
+
+                break;
+        }
 
         //Serial.print(getMean(sm_mean,SM_SIZE)); Serial.print("\t "); Serial.println(value);
     }

include/temperature.h

@@ -25,30 +25,34 @@ DallasTemperature sensors(&oneWire);
 uint16_t tempCmean_pos=0;
 // arrays to hold device addresses
 DeviceAddress thermometerReservoir={0x28,0xFF,0x30,0xBA,0x85,0x16,0x03,0xB5};
-float tempC_reservoir;
+float tempC_reservoir; //last reading
-float tempCmean_reservoir[TEMPMEAN_SIZE];
+float tempCmean_reservoir_array[TEMPMEAN_SIZE];
+float tempCmean_reservoir=DEVICE_DISCONNECTED_C;
+
+
 
 DeviceAddress thermometerAir={0x28,0xFF,0x6C,0x1C,0x72,0x16,0x05,0x8B};
-float tempC_air;
+float tempC_air; //last reading
-float tempCmean_air[TEMPMEAN_SIZE];
+float tempCmean_air_array[TEMPMEAN_SIZE];
+float tempCmean_air=DEVICE_DISCONNECTED_C;
 
 
 void temperature_setup() {
 
   //initialize mean array
   for (uint16_t i=0;i<TEMPMEAN_SIZE;i++) {
-    tempCmean_reservoir[i]=-127;
+    tempCmean_reservoir_array[i]=-127;
-    tempCmean_air[i]=-127;
+    tempCmean_air_array[i]=-127;
   }
 
   sensors.begin();
   delay(1000);
 
 
-  //Serial.print("Locating devices...");
+  Serial.print("Locating devices...");
-  //Serial.print("Found ");
+  Serial.print("Found ");
-  //Serial.print(sensors.getDeviceCount(), DEC);
+  Serial.print(sensors.getDeviceCount(), DEC);
-  //Serial.println(" devices.");
+  Serial.println(" devices.");
 
   delay(1000);
 
@@ -101,7 +105,12 @@ void temperature_loop(unsigned long loopmillis) {
       {
         Serial.print(" Error reading: ");  printAddress(thermometerReservoir);
       }else{
-        tempCmean_reservoir[tempCmean_pos]=tempC_reservoir;
+        tempCmean_reservoir_array[tempCmean_pos]=tempC_reservoir;
+        if (isValueArrayOKf(tempCmean_reservoir_array,TEMPMEAN_SIZE,DEVICE_DISCONNECTED_C)) {
+          tempCmean_reservoir=getMeanf(tempCmean_reservoir_array,TEMPMEAN_SIZE);
+        }else{
+          tempCmean_reservoir=DEVICE_DISCONNECTED_C;
+        }
       }
 
       tempC_air = sensors.getTempC(thermometerAir);
@@ -109,7 +118,12 @@ void temperature_loop(unsigned long loopmillis) {
       {
         Serial.print(" Error reading: ");  printAddress(thermometerReservoir);
       }else{
-        tempCmean_air[tempCmean_pos]=tempC_air;
+        tempCmean_air_array[tempCmean_pos]=tempC_air;
+        if (isValueArrayOKf(tempCmean_air_array,TEMPMEAN_SIZE,DEVICE_DISCONNECTED_C)) {
+          tempCmean_air=getMeanf(tempCmean_air_array,TEMPMEAN_SIZE);
+        }else{
+          tempCmean_air=DEVICE_DISCONNECTED_C;
+        }
       }
 
       tempCmean_pos++;

include/waterlevel.h

@@ -6,12 +6,20 @@
 #define HCSR04_PIN_ECHO 17
 #define HCSR04_PIN_TRIGGER 16
 #define HCSR04_TIMEOUT 5000 //default is 100000 (uS)
-#define READINTERVAL_HCSR04 100
+#define READINTERVAL_HCSR04 500
 
 #define WATERLEVELMEAN_SIZE 32
-float waterlevelMean[WATERLEVELMEAN_SIZE];
+float waterlevelMean_array[WATERLEVELMEAN_SIZE];
-uint16_t waterlevelMean_pos=0;
+uint16_t waterlevelMean_array_pos=0;
+#define WATERLEVEL_UNAVAILABLE -1
+float waterlevel=WATERLEVEL_UNAVAILABLE;
 
+uint16_t waterlevel_failcounter=0;
+#define WATERLEVEL_MAXFAILS 15 //maximum counter value
+#define WATERLEVEL_FAILTHRESHOLD 10 //if failcounter is greater or equal this value waterlevel will not be valid
+
+
+float waterlevel_distanceToVolume(float distance);
 
 
 void waterlevel_setup() {
@@ -19,7 +27,7 @@ void waterlevel_setup() {
   //HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO);
   HCSR04.begin(HCSR04_PIN_TRIGGER, HCSR04_PIN_ECHO,HCSR04_TIMEOUT, HCSR04.eUltraSonicUnlock_t::unlockSkip);
   for (uint16_t i=0;i<WATERLEVELMEAN_SIZE;i++) {
-    waterlevelMean[i]=-1; //-1 is also timeout value
+    waterlevelMean_array[i]=-1; //-1 is also timeout value
     
   }
 }
@@ -30,15 +38,50 @@ void waterlevel_loop(unsigned long loopmillis) {
   if (loopmillis>=last_read_hcsr04+READINTERVAL_HCSR04) {
     last_read_hcsr04=loopmillis;
     float temperature=20.0;
-    if (tempC_air!=DEVICE_DISCONNECTED_C && isValueArrayOKf(tempCmean_air,TEMPMEAN_SIZE,DEVICE_DISCONNECTED_C)) { //sensor ok
+    if (tempCmean_air!=DEVICE_DISCONNECTED_C) { //sensor ok
-      temperature=getMeanf(tempCmean_air,TEMPMEAN_SIZE);
+      temperature=tempCmean_air;
     }
     
     double* distances = HCSR04.measureDistanceMm(temperature);
+    double distance=distances[0];
+    //Serial.print("Distance reading:"); Serial.println(distance);
+
+    if (distance!=WATERLEVEL_UNAVAILABLE) { //successful
+      waterlevelMean_array[waterlevelMean_array_pos]=distance;
+      waterlevelMean_array_pos++;
+      waterlevelMean_array_pos%=WATERLEVELMEAN_SIZE;
+      if (waterlevel_failcounter>0) { //reduce failcounter if sucessfull
+        waterlevel_failcounter--;
+      }
+    }else{
+      if (waterlevel_failcounter<WATERLEVEL_MAXFAILS) {
+        waterlevel_failcounter++;
+      }
+      
+    }
+
+    
+    if (isValueArrayOKf(waterlevelMean_array,WATERLEVELMEAN_SIZE,WATERLEVEL_UNAVAILABLE)){
+      float _distance=getFilteredf(waterlevelMean_array,WATERLEVELMEAN_SIZE,8);
+
+      waterlevel=waterlevel_distanceToVolume(_distance);
+
+      //float _meanWaterlevel=getMeanf(waterlevelMean,WATERLEVELMEAN_SIZE);
+      //Serial.print("\t Dist="); Serial.print(_filteredWaterlevel); Serial.print("mm"); Serial.print("(+- "); Serial.print((getMaxf(waterlevelMean,WATERLEVELMEAN_SIZE)-getMinf(waterlevelMean,WATERLEVELMEAN_SIZE))/2.0); Serial.print(")"); Serial.print(" [mean="); Serial.print(_meanWaterlevel); Serial.print("]"); 
+    }
+
+    if (waterlevel_failcounter>=WATERLEVEL_FAILTHRESHOLD) { //too many failed readings
+      waterlevel=-1;
+      /*if (debug) {
+        Serial.print("Waterlevel Failcounter="); Serial.println(waterlevel_failcounter);
+      }*/
+    }
 
-    waterlevelMean[waterlevelMean_pos]=distances[0];
-    waterlevelMean_pos++;
-    waterlevelMean_pos%=WATERLEVELMEAN_SIZE;
   }
 }
+
+float waterlevel_distanceToVolume(float distance){
+  return distance;
+}
+
 #endif

src/main.cpp

@@ -1,18 +1,20 @@
 #include <Arduino.h>
 
-bool flag_print=false;
+bool debug=true; //print Serial information
 
 #include "helpfunctions.h"
 #include "ADS1X15.h"
 
 ADS1115 ADS(0x48);
 
-// ######## EC
-#include "ec.h"
 
 // ######## Temperature
 #include "temperature.h"
 
+// ######## EC
+#include "ec.h"
+
+
 
 // ######## Water Level
 #include "waterlevel.h"
@@ -25,13 +27,13 @@ ADS1115 ADS(0x48);
 #include "soilmoisture.h"
 
 
-unsigned long last_print=0;
+unsigned long last_check=0;
-
 
 
 
 
 
+bool valueError=false;
 
 #define PIN_BUTTON 12
 #define PIN_LED 13
@@ -50,15 +52,19 @@ void setup() {
   ADS.setGain(0);
 
 
+  Serial.println("Setup EC");
   ec_setup();
 
+  Serial.println("Setup Waterlevel");
   waterlevel_setup();
 
+  Serial.println("Setup Temperature");
   temperature_setup();
   
+  Serial.println("Setup Flow");
   flow_setup();
 
-  //Serial.println("Setup finished");
+  Serial.println("Finished Setup");
   delay(200);
 
   //Test adc to ec function output
@@ -76,102 +82,177 @@ void setup() {
 
 
   //Serial.println("time,tempReservoir,ECadcCalib,ECadc,ECadcAdjusted,EC,EC25");
-  Serial.println("time,tempReservoir,ECadcCalib,ECadc,ECadcAdjusted,sm");
+  //Serial.println("time,tempReservoir,ECadcCalib,ECadc,ECadcAdjusted,sm");
 
 }
 
 void loop() {
   unsigned long loopmillis=millis();
   
-  flag_print=false;
-
-  
-  
   ec_loop(loopmillis);
 
-
   temperature_loop(loopmillis);
   
+  waterlevel_loop(loopmillis);
 
-  //waterlevel_loop(loopmillis);
+  flow_loop(loopmillis);
-
-
-  //flow_loop(loopmillis);
 
   sm_loop(loopmillis);
  
 
-  static bool getReading=false;
+  if (!digitalRead(PIN_BUTTON)) {
-  if (!getReading && !digitalRead(PIN_BUTTON)) {
+    valueError=false;
-    getReading=true;
+    Serial.println("Reset ValueError flag by user");
-    last_measurement_ec=0; //force ec reading now
+    digitalWrite(PIN_LED,valueError);
-    
+    delay(100);
-    ec_flag_measurement_available=false;
-    digitalWrite(PIN_LED,HIGH);
   }
   
+  if (loopmillis>last_check+2000) {  //check values
   
-  
+    last_check=loopmillis;
-  if (loopmillis>last_print+2000) { 
-    //if (ec_flag_measurement_available && getReading) {
-    if (ec_flag_measurement_available) {
-      last_print=loopmillis;
-      getReading=false;
-      ec_flag_measurement_available=false;
-      digitalWrite(PIN_LED,LOW);
-
-
-      Serial.print(millis()/1000.0,2); Serial.print(",");
-      
-      Serial.print(getMeanf(tempCmean_reservoir,TEMPMEAN_SIZE)); Serial.print(",");
-      //Serial.print(getMean(sm_mean,SM_SIZE)); Serial.print(",");
-      
-      Serial.print(ec_calib_adc); Serial.print(",");
-      Serial.print(ec_adc); Serial.print(",");
-      Serial.print(ec_adc_adjusted); Serial.print(",");
-      //Serial.print(ec); Serial.print(",");
-      //Serial.print(ec25);
-      Serial.print(getMean(sm_mean,SM_SIZE));
 
 
 
     
+    if (tempCmean_air==DEVICE_DISCONNECTED_C || tempCmean_reservoir==DEVICE_DISCONNECTED_C) {
+      valueError=true;
+    }
+    if (waterlevel==WATERLEVEL_UNAVAILABLE) {
+      valueError=true;
+    }
+    if (sm_mean1==SM_DISCONNECTED || sm_mean2==SM_DISCONNECTED) {
+      valueError=true;
+    }
+    if (ec==EC_UNAVAILABLE){
+      valueError=true;
+    }
+    
+
+    digitalWrite(PIN_LED,valueError);
+
+
+    
+
+    if (debug) {
+      Serial.println("_______________________");
+      Serial.print(millis()/1000.0,2); Serial.println(":");
+
+      Serial.print("temperature reservoir,air = ");
+      Serial.print(tempCmean_reservoir); Serial.print(","); Serial.print(tempCmean_air);
       Serial.println();
 
 
+
+      Serial.print("sm_mean 1,2,3 = ");
+      Serial.print(sm_mean1); Serial.print(",");
+      Serial.print(sm_mean2); Serial.print(",");
+      Serial.print(sm_mean3);
+      Serial.println();
+
       /*
-      
+      Serial.print("sm_mean 1,2,3 = ");
-
+      Serial.print(getMean(sm_mean1array,SM_SIZE)); Serial.print(",");
-      if (isValueArrayOKf(tempCmean_reservoir,TEMPMEAN_SIZE,DEVICE_DISCONNECTED_C)){
+      Serial.print(getMean(sm_mean2array,SM_SIZE)); Serial.print(",");
-        Serial.print("\t Treservoir="); Serial.print(getMeanf(tempCmean_reservoir,TEMPMEAN_SIZE)); Serial.print("\t Tair="); Serial.print(getMeanf(tempCmean_air,TEMPMEAN_SIZE));
+      Serial.print(getMean(sm_mean3array,SM_SIZE));
-      }else{
-        Serial.print("\t waiting for temperature");
-      }
-
-      
-      if (isValueArrayOKf(waterlevelMean,WATERLEVELMEAN_SIZE,-1.0)){
-        float _max=getMaxf(waterlevelMean,WATERLEVELMEAN_SIZE);
-        float _min=getMinf(waterlevelMean,WATERLEVELMEAN_SIZE);
-
-        float _filteredWaterlevel=getFilteredf(waterlevelMean,WATERLEVELMEAN_SIZE,8);
-        float _meanWaterlevel=getMeanf(waterlevelMean,WATERLEVELMEAN_SIZE);
-        
-
-        Serial.print("\t Dist="); Serial.print(_filteredWaterlevel); Serial.print("mm"); Serial.print("(+- "); Serial.print((_max-_min)/2.0); Serial.print(")"); Serial.print(" [mean="); Serial.print(_meanWaterlevel); Serial.print("]");
-        
-      }else{
-        Serial.print("\t waiting for distance");
-      }
-
-      Serial.print("\t Flow="); Serial.print(flow,2);
-      Serial.print("\t Flowsum="); Serial.print(flow_counter_sum);
-      
-      
-
       Serial.println();
+      Serial.print("sm_max 1,2,3 = ");
+      Serial.print(getMax(sm_mean1array,SM_SIZE)); Serial.print(",");
+      Serial.print(getMax(sm_mean2array,SM_SIZE)); Serial.print(",");
+      Serial.print(getMax(sm_mean3array,SM_SIZE));
+      Serial.println();
+      Serial.print("sm_min 1,2,3 = ");
+      Serial.print(getMin(sm_mean1array,SM_SIZE)); Serial.print(",");
+      Serial.print(getMin(sm_mean2array,SM_SIZE)); Serial.print(",");
+      Serial.print(getMin(sm_mean3array,SM_SIZE));
+      Serial.println();
+      //Serial.print(getMax(sm_mean3array,SM_SIZE)); Serial.println();
       */
 
+      Serial.print("Flow = "); Serial.print(flow);
+      Serial.println();
+
+      Serial.print("EC ec_calib_adc,ec_adc,ec_adc_adjusted = ");
+      Serial.print(ec_calib_adc); Serial.print(",");
+      Serial.print(ec_adc); Serial.print(",");
+      Serial.print(ec_adc_adjusted);
+      Serial.println();
+      Serial.print("EC ec,ec25 = ");
+      Serial.print(ec); Serial.print(",");
+      Serial.print(ec25); 
+      Serial.println();
+
+      Serial.print("Waterlevel="); Serial.print(waterlevel);
+      Serial.println();
+
+      
+
     }
+
+
+
+
+
+
+    /*
+    Serial.print(millis()/1000.0,2); Serial.print(",");
+    
+    Serial.print(getMeanf(tempCmean_reservoir_array,TEMPMEAN_SIZE)); Serial.print(",");
+    //Serial.print(getMean(sm_mean,SM_SIZE)); Serial.print(",");
+    
+    Serial.print(ec_calib_adc); Serial.print(",");
+    Serial.print(ec_adc); Serial.print(",");
+    Serial.print(ec_adc_adjusted); Serial.print(",");
+    Serial.print(ec); Serial.print(",");
+    Serial.print(ec25);
+    Serial.print(getMean(sm_mean,SM_SIZE));
+    
+
+    
+    
+    Serial.println();
+
+    
+
+    if (tempCmean_reservoir!=DEVICE_DISCONNECTED_C){
+      Serial.print("\t Treservoir="); Serial.print(tempCmean_reservoir); Serial.print("\t Tair="); Serial.print(tempCmean_air);
+    }else{
+      Serial.print("\t waiting for temperature");
+    }
+
+    
+    if (isValueArrayOKf(waterlevelMean,WATERLEVELMEAN_SIZE,-1.0)){
+      float _max=getMaxf(waterlevelMean,WATERLEVELMEAN_SIZE);
+      float _min=getMinf(waterlevelMean,WATERLEVELMEAN_SIZE);
+
+      float _filteredWaterlevel=getFilteredf(waterlevelMean,WATERLEVELMEAN_SIZE,8);
+      float _meanWaterlevel=getMeanf(waterlevelMean,WATERLEVELMEAN_SIZE);
+      
+
+      Serial.print("\t Dist="); Serial.print(_filteredWaterlevel); Serial.print("mm"); Serial.print("(+- "); Serial.print((_max-_min)/2.0); Serial.print(")"); Serial.print(" [mean="); Serial.print(_meanWaterlevel); Serial.print("]");
+      
+    }else{
+      Serial.print("\t waiting for distance");
+    }
+
+    Serial.print("\t Flow="); Serial.print(flow,2);
+    Serial.print("\t Flowsum="); Serial.print(flow_counter_sum);
+    
+    
+
+    Serial.println();   
+    */
+    
+      
+    
   }
   
 }
+
+
+
+/*
+TODO:
+- waterlevel nur -1
+- waterlevel distance to volume fukntion
+- soilmoisture min max calibartion einfügen
+*/